Header And Logo

• Home

• About
  • Introduction
  • Features
  • Advocacy
  • Marketing

• Get FreeBSD
  • Release Information
  • Release Engineering

• Documentation
  • FAQ
  • Handbook
  • Porter's Handbook
  • Developer's Handbook
  • Manual Pages

• Community
  • Mailing Lists
  • Forums
  • User Groups
  • Events

• Developers
  • Project Ideas
  • SVN Repository
  • CVS Repository
  • Perforce Repository

• Support
  • Vendors
  • Security Information
  • Bug Reports
  • Submit Bug-report

• Foundation
  • Donate

FreeBSD Multimedia

FreeBSD Multimedia Resources List

Links on this page refer to multimedia resources (podcast, vodcast, audio recordings, video recordings, photos) related to FreeBSD or of interest for FreeBSD users.

This list is available as chronological overview, as a tag cloud and via the sources.

This list is also available as RSS feed

If you know any resources not listed here, or notice any dead links, please send details to Edwin Groothuis so that it can be included or updated.

Tag: freebsd

• At MeetBSD with some of the FreeBSD Core Team
  Source: bsdtalk
  Added: 18 November 2008
  Tags: bsdtalk, interview, freebsd core team, meetbsd2008, meetbsd, robert watson, brooks davis, kris kennaway, peter wemm, philip paeps, freebsd, subversion
  Ogg version (38 minutes), MP3 version (18 Mb, 38 minutes)
  

  A conversation with some of the FreeBSD Core Team at MeetBSD California 2008. I speak with Brooks Davis, Kris Kennaway, Robert Watson, Peter Wemm, and Philip Paeps about the recent core team election, FreeBSD 7.1 and 8, Developer Summits, and the move to Subversion.

• Jeremy White, Founder of CodeWeavers
  Source: bsdtalk
  Added: 03 May 2008
  Tags: bsdtalk, interview, freebsd, codeweavers, crossover, jeremy white
  Ogg version (16 minutes), MP3 version (7 Mb, 16 minutes)
  

  Interview with Jeremy White, Founder of CodeWeavers. We talk about the recent availability of an experimental build of Crossover Games for BSD.

• FreeBSD Developer Alexander Motin
  Source: bsdtalk
  Added: 18 April 2008
  Tags: bsdtalk, interview, freebsd, mpd, alexander motin
  Ogg version (16 minutes), MP3 version (8 Mb, 16 minutes)
  

  Interview with FreeBSD Developer Alexander Motin. We talk about mpd, the netgraph based Multi-link PPP Daemon. For more information, see http://mpd.sourceforge.net/.

• FreeBSD Lead Release Engineer Ken Smith
  Source: bsdtalk
  Added: 01 March 2008
  Tags: bsdtalk, interview, freebsd, release engineer, ken smith
  Ogg version (16 minutes), MP3 version (7 Mb, 16 minutes)
  

  Interview with FreeBSD Lead Release Engineer Ken Smith.

• FreeBSD Developer Diane Bruce
  Source: bsdtalk
  Added: 10 May 2007
  Tags: bsdtalk, interview, freebsd, diana bruce
  Ogg version (10 minutes), MP3 version (5 Mb, 10 minutes)
  

  Interview with FreeBSD developer Diane Bruce. We talk about Ham Radio on BSD. Slides from one of her talks: http://www.oarc.net/hamradio_on_freebsd.pdf

• Cisco Distinguished Engineer Randall Stewart
  Source: bsdtalk
  Added: 08 March 2007
  Tags: bsdtalk, interview, cisco, freebsd, stream control transmission protocol, randall stewart
  Ogg version (35 minutes), MP3 version (17 Mb, 35 minutes)
  

  Interview with Cisco Distinguished Engineer Randall Stewart. We talk about the Stream Control Transmission Protocol and his work bringing it to FreeBSD.

• FreeBSD Developer George Neville-Neil
  Source: bsdtalk
  Added: 27 February 2007
  Tags: bsdtalk, interview, freebsd, packet construction set, george neville-neil
  Ogg version (19 minutes), MP3 version (10 Mb, 19 minutes)
  

  Interview with FreeBSD developer George Neville-Neil. We talk about the packet construction set and the packet debugger.

• FreeBSD Developer Joseph Koshy
  Source: bsdtalk
  Added: 11 December 2006
  Tags: bsdtalk, interview, freebsd, libelf, joseph koshy
  Ogg version (9 minutes), MP3 version (5 Mb, 9 minutes)
  

  Interview with FreeBSD developer Joseph Koshy about libELF. You can find more information about libELF at http://wiki.freebsd.org/LibElf.

• FreeBSD Developer Kip Macy
  Source: bsdtalk
  Added: 07 December 2006
  Tags: bsdtalk, interview, freebsd, ultrasparc t1, kip macy
  Ogg version (22 minutes), MP3 version (10 Mb, 22 minutes)
  

  Interview with FreeBSD developer Kip Macy. We talk about the Ultrasparc T1 port.

• FreeBSD Port Committer Thomas McLaughlin
  Source: bsdtalk
  Added: 01 December 2006
  Tags: bsdtalk, interview, freebsd, bsd#, thomas mclaughlin
  Ogg version (18 minutes), MP3 version (9 Mb, 18 minutes)
  

  Interview with FreeBSD Port Committer Thomas McLaughlin about the BSD# project.

• FreeBSD Release Engineer Bruce Mah
  Source: bsdtalk
  Added: 29 November 2006
  Tags: bsdtalk, interview, freebsd, release engineer, bruce mah
  Ogg version (15 minutes), MP3 version (7 Mb, 15 minutes)
  

  Interview with FreeBSD Release Engineer Bruce Mah.

• P1B: Tracking FreeBSD in a Commercial Setting
  Source: YouTube bsdconferences channel
  Added: 27 March 2009
  Tags: youtube, presentation, asiabsdcon2008, asiabsdcon, freebsd, warner losh
  Flash (33:40)
  

  P1B: Tracking FreeBSD in a Commercial Setting
  AsiaBSDCon 2008, M. Warner Losh
  clive URL: http://www.youtube.com/watch?v=VaZ9Ef04bJg

• Using FreeBSD to Promote Open Source Development Methods, Brooks Davis, AsiaBSDCon 2008
  Source: YouTube bsdconferences channel
  Added: 21 February 2009
  Tags: youtube, presentation, asiabsdcon2008, asiabsdcon, freebsd, promotion, open source development models, brooks davis
  Flash (30:07)
  

  Using FreeBSD to Promote Open Source Development Methods, Brooks Davis, AsiaBSDCon 2008
  clive URL: http://www.youtube.com/watch?v=4lcrinKBMas

• FreeBSD Kernel Internals, Dr. Marshall Kirk McKusick
  Source: YouTube bsdconferences channel
  Added: 19 January 2009
  Tags: youtube, course, freebsd, design and implementation of the freebsd operating system, kirk mckusick
  Flash (59:57)
  

  The first hour of Marshall Kirk McKusick's course on FreeBSD kernel internals based on his book, The Design and Implementation of the FreeBSD Operating System. This course has been given at BSD Conferences and technology companies around the world.
  clive URL: http://www.youtube.com/watch?v=nwbqBdghh6E

• May 2008 developer Vimage report
  Source: YouTube bsdconferences channel
  Added: 31 December 2008
  Tags: youtube, freebsd, vimage, marko zec, julian elischer
  Flash (2:44:36)
  

  A sneak peak into the FreeBSD development process.
  Warning 2 hours! filmed over 2 days. (The schedule worked out was optimistic to say the least but it's still looking ok...)
  Marko Zec and Julian Elischer report back to the developers at BSDCan on the progress on virtualizing the network stack in FreeBSD. This has been a long term project but at the time of this recording was just reaching the point of feasibility. In this video you can see some of the dynamics of the group as developers become familiar with the project and discussions take place regarding such things as maintainability, ABI compatibility, and even what to call the feature. In this video you can see the decision being made by a "quorum" of developers to take this project mainstream.
  The sound is less that perfect, but it's what we have.
  This is a montage of 3 video sources, one of which is a lower resolution, but at times it was the only camera capturing the action. (the other ran out of tape for a while)
  Thanks to Ed Maste for the added footage.
  I will be doing more editing later and will be substituting in better footage in some places.
  clive URL: http://au.youtube.com/watch?v=Px-pSXm32dE

• ZFS in FreeBSD, by Pawel Jakub Dawidek
  Source: YouTube bsdconferences channel
  Added: 31 December 2008
  Tags: youtube, freebsd, zfs, pawel jakub
  Flash (54:34)
  

  Pawel goes over ZFS, and tells us the state of the FreeBSD port. Source: Julian
  clive URL: http://au.youtube.com/watch?v=5-CR3o-Q2CU

• Isilon and FreeBSD
  Source: YouTube bsdconferences channel
  Added: 31 December 2008
  Tags: youtube, freebsd, isilon, zach loafman
  Flash (28:58)
  

  Zach Loafman explains how Isilon uses FreeBSD and how the company adds to it and interacts with the FreeBSD community.
  clive URL: http://au.youtube.com/watch?v=OlMocIwM5QU

• FreeBSD networking work summary
  Source: YouTube bsdconferences channel
  Added: 16 December 2008
  Tags: youtube, freebsd, networking, robert watson
  Flash (55:21)
  

  Robert Watson reports on work currently under way to optimize the networking stack for new hardware. Source: Julian
  clive URL: http://www.youtube.com/watch?v=ohLVNmI3lCg

• Embedded FreeBSD
  Source: YouTube bsdconferences channel
  Added: 07 December 2008
  Tags: youtube, meetbsd, meetbsd2007, embedded, freebsd, polish, rafal jaworowski
  Flash (1:11:09)
  

  "FreeBSD do zabudowy czyli nie tylko pecety", Rafal Jaworowski at MeetBSD 2007 in Warsaw, Poland.
  clive URL: http://www.youtube.com/watch?v=2HcIJvJX4y8

• New features in FreeBSD 7
  Source: YouTube bsdconferences channel
  Added: 07 December 2008
  Tags: youtube, meetbsd, meetbsd2007, freebsd, kris kennaway
  Flash (1:07:18)
  

  "New features and improvements in FreeBSD 7", Kris Kennaway at MeetBSD 2007 in Warsaw, Poland
  clive URL: http://www.youtube.com/watch?v=XUjJWhlnujQ

• FreeBSD Profiling, Kris Kennaway, MeetBSD 2008
  Source: YouTube bsdconferences channel
  Added: 06 December 2008
  Tags: youtube, meetbsd, meetbsd2008, freebsd, profiling, kris kennaway
  Flash (1:06:23)
  

  FreeBSD Profiling tools, tips and tricks, Kris Kennaway, MeetBSD 2008
  clive URL: http://www.youtube.com/watch?v=Mfb5_uG7BCA

• FreeBSD, Protecting Privacy with Tor
  Source: YouTube bsdconferences channel
  Added: 06 December 2008
  Tags: youtube, meetbsd, meetbsd2007, freebsd, tor, privacy, christian bruffer
  Flash (46:24)
  

  "Protecting your Privacy with FreeBSD and Tor", Christian Brffer at MeetBSD 2007 in Warsaw, Poland.
  clive URL: http://www.youtube.com/watch?v=OwBh8ro7xHQ

• FreeBSD, Building a Computing Cluster
  Source: YouTube bsdconferences channel
  Added: 06 December 2008
  Tags: youtube, meetbsd, meetbsd2007, freebsd, cluster, performance, brooks davis
  Flash (47:51)
  

  "Reflections on Building a High-Performance Computing Cluster using FreeBSD", Brooks Davis at MeetBSD 2007 in Warsaw, Poland.
  clive URL: http://www.youtube.com/watch?v=BpsRb9fJ4Ds

• Embedding FreeBSD, MeetBSD 2008
  Source: YouTube bsdconferences channel
  Added: 06 December 2008
  Tags: youtube, meetbsd, meetbsd2008, embedded, freebsd, philip paeps, warner losh
  Flash (38:56)
  

  Embedding FreeBSD by Warner Losh and Philip Paeps, MeetBSD November 15, 2008
  clive URL: http://www.youtube.com/watch?v=Fc3xYrxvIU0

• Lousy virtualization, Happy users: FreeBSD's jail(2) facility
  Source: UKUUG
  Added: 02 April 2007
  Tags: ukuug, presentation, freebsd, jails, poul-henning kamp
  Slides (2.7 Mb)
  

  Lousy virtualization, Happy users: FreeBSD's jail(2) facility by Poul-Henning Kamp (phk@FreeBSD.org)

• Richard Bejtlich - Network security monitoring using FreeBSD
  Source: DCBSDCon
  Added: 24 May 2009
  Tags: dcbsdcon, dcbsdcon2009, slides, freebsd, network security, monitoring, richard bejtlich
  PDF (972 Kb, 23 pages)
  

  I've been using FreeBSD as my preferred platform for Network Security Monitoring (NSM) since 2000. In this presentation I'll discuss my latest thinking on using FreeBSD to identify normal, suspicious, and malicious traffic in enterprise networks. FreeBSD is a powerful platform for network traffic inspection and log analysis, and I'll share a few ways I use it in production environments.

• Ken Caruso - Using BSD in Shmoocon labs
  Source: DCBSDCon
  Added: 24 May 2009
  Tags: dcbsdcon, dcbsdcon2009, slides, freebsd, scmoocon, ken caruso
  PDF (447 Kb, 13 pages)
  

  n/a

• Brooks Davis - Isolating cluster jobs for performance and predictability
  Source: DCBSDCon
  Added: 24 May 2009
  Tags: dcbsdcon, dcbsdcon2009, slides, freebsd, clusters, brooks davis
  PDF (952 Kb, 24 pages)
  

  At The Aerospace Corporation, we run a large FreeBSD based computing cluster to support engineering applications. These applications come in all shapes, sizes, and qualities of implementation. To support them and our diverse userbase we have been searching for ways to isolate jobs from one another in ways that are more effective than Unix time sharing and more fine grained than allocating whole nodes to jobs. In this paper we discuss the problem space and our efforts so far. These efforts include implementation of partial file systems vitalization and CPU isolation using CPU sets.

• George Neville-Neil - Performance analysis with (hwpmc)
  Source: DCBSDCon
  Added: 24 May 2009
  Tags: dcbsdcon, dcbsdcon2009, slides, freebsd, hwpmc, george neville-neil
  PDF (469 Kb, 71 pages)
  

  FreeBSD has included support for Hardware Performance Monitoring Counters (hwpmc) for several years now. The hwpmc system provides access to counters that are present in all modern Intel and AMD CPUs, as well as other chipsets, and which give the programmer the ability to understand the low level performance issues that may effect their code. This talk will cover the motivation behind and basic usage of HWPMC.

• EuroBSDCon 2008 - Paeps Philip - How-to embed FreeBSD
  Source: EuroBSDCon
  Added: 22 October 2008
  Tags: eurobsdcon, eurobsdcon2008, embed, freebsd, philip paeps
  MP3 (1 byte, 43 minutes), OGG (1 byte, 43 minutes), PDF (1 byte, 17 pages)
  

  This paper provides a how-to embed FreeBSD. A console server built form an AT91RM9200 based ARM system will be explored. This paper will talk about the selection of hardware. It will explore creating images for the target system, as well as concentrate on different alternatives for deploying the system. A number of different options exist today, and no comprehensive guide for navigating through the choices exists today. This paper will explore the different alternatives that exist today for producing images targeted at different size requirements. The differing choices for storage in an embedded environment are explored. The techniques used to access rich debugging environments are discussed.

• EuroBSDCon 2008 - George Neville-Neil - Multicast Performance in FreeBSD
  Source: EuroBSDCon
  Added: 22 October 2008
  Tags: eurobsdcon, eurobsdcon2008, multicast, freebsd, george neville-neil
  MP3 (1 byte, 39 minutes), OGG (1 byte, 39 minutes), PDF (1 byte, n pages)
  

  In the past ten years most of the research in network protocols has gone into TCP, leaving UDP to languish as a local configuration protocol. While the majority of Internet traffic is TCP, UDP remains the only IP protocol that works over multicast and as such has some specific, and interesting uses in some areas of computing. In 2008 we undertook a study of the performance of UDP multicast on both 1Gbps and 10Gbps Ethernet networks in order to see if changing the physical layer of the network would give a linear decrease in packet latency. To measure the possible gains we developed a new network protocol test program, mctest, which is capable of recording packet round trip times from many hosts simultaneously and which we believe accurately represents how many environments use multicast. The mctest program has been integrated into FreeBSD and is now being used to verify the proper operation of multicast on various pieces of 10Gbps hardware.

• EuroBSDCon 2008 - Pedro Giffuni - Working with Engineering Applications in FreeBSD
  Source: EuroBSDCon
  Added: 22 October 2008
  Tags: eurobsdcon, eurobsdcon2008, freebsd, engineering applications, pedro giffuni
  MP3 (1 byte, 51 minutes), OGG (1 byte, 51 minutes), PDF (1 byte, n pages)
  

  In recent years, traditional branches of engineering like Civil, Chemical, Mechanical, Electrical and Industrial Engineering are requiring extensive computing facilities for their needs. Several well known labs (Sandia, Lawrence Livermore) rely on huge clusters to do all types of complex analysis that were unthinkable a couple of decades ago. While the free BSD variants share the environment with traditional UNIX systems, frequently used for such computations, it was not common to find adequate free software packages to carry complex calculations. Eventually commercial versions of important math related packages started to appear for the Linux platform. Even when the big packages were distant, the BSDs learned and adapted in resourceful ways: Matlab and Mathematica, running under Linux emulation, demanded functionality from the BSDs and NetBSD implemented a signal trampoline to be able to run AutoCAD with IRIX binary compatibility. A notable project that was always available under a free license was Berkeley's Spice circuit analysis program, however it was an exception rather than the rule. Even when the scientific community pressed for a while to get other important tools like NASA's FEA package Nastran under a free license, the objective of being able to access and enhance open scientific tools was elusive. About a decade ago the situation started to improve: FreeBSD's ports system started growing exponentially, first with a high content in the math category, afterwards with a CAD section and after sustained growth in those categories a science section was created. This growth was mostly pushed by Universities and their research projects and in general are not well known with respect to the commercial counterparts. I started porting math/engineering code for FreeBSD around 1996. Back then it was absolutely unthinkable for a Mechanical Engineer to depend only on FreeBSD for it's daily work. The situation nowadays is different: there are some very high quality engineering analysis packages like EDF's Code Aster, with more than 12 years of professional development, that just can't be ignored. A Finite Element package, like Code Aster, can easily cost 5000 US$, is priced according to the maximum problem size it can solve, can require yearly licenses, and is rarely available with source code. In NASTRAN's case the source code is only available for US citizens under a yearly fee. Free software does have serious limitations though; just like in office applications there are proprietary CAD formats or sometimes the package simply doesn't have the required functionality. Having the sources, of course, always has the advantage of being able to implement (or pay for) some specific functionality you might need. Many commercial packages have been recently ported to Linux, but even when they gain some of the advantages of an open environment they still have yet another limitation: they have been very slow to make use of the multicored features of the new processors in the market, a huge limitation now that the speed war between processors has been limited by the overheating problem. The objective of the talk is to give an overview of several CAD/CAE packages that have been made available recently as part of FreeBSD's ports system and the decisions that were made to port them. BRLCAD and Varkon are two CAD utilities that made a transition from closed source to an open environment and in the process in the process of getting ported to BSD have gained greater portability and general "bug" fixes critical for their consolidation as usable and maintainable projects. There are also some tricks that have not been well documented: it is possible to enable threads and some extra optimizations on some packages, and it is also possible to replace the standard BLAS library with the faster GOTO BLAS without rebuilding the package. It is also possible to build the packages optimized for a clustered environment, but perhaps what is most interesting of all is how all the packages interrelate with each other and can turn FreeBSD into a complete enginering environment. No OS distribution so far is offering all the engineering specific utilities offered through FreeBSD's ports system: from design to visualization, passing through analysis FreeBSD is becoming an option that can't be ignored, and best of all, it is an effort that will benefit not only FreeBSD but the wider audience.
  Pedro F. Giffuni M. Sc. Industrial Engineering - University of Pittsburgh Mechanical Engineer - Universidad Nacional de Colombia I was born in Bogota, Colombia but I am an Italian citizen. My experience with computers started when I was about 12 years old With the TRS-80 Color Computer first using Basic and the OS-9. I studied electronics for 3 years but became tired of worrying about "whatever happened to electrons in there" and moved to Mechanical Engineering. For a while I rested from the computer world until the Internet came stepping along. I started using FreeBSD around 1995 and soon fell in love with the idea of being able to install a complete version of UNIX from the net with just one floppy. After submitting a the 999th port to the FreeBSD project Walnut Creek was kind enough to give me a subscription for several years to FreeBSD's CD-ROM. Since then I've been on and off porting software packages or fixing the bugs I have caused while porting them. Of course there has always been great respect for the other BSDs and their wonderful license and while I've given up on the idea of one day seeing a "UnifiedBSD" I am glad to see different approaches sharing ideas in a healthful environment.
  Keywords: BSD, engineering, CAE, CAD, math, mechanical, FreeBSD ports

• EuroBSDCon 2008 - Ion-Mihai Tetcu - Improving FreeBSD ports/packages quality
  Source: EuroBSDCon
  Added: 22 October 2008
  Tags: eurobsdcon, eurobsdcon2008, freebsd, ports, packages, ion-mihai tetcu
  MP3 (1 byte, 56 minutes), OGG (1 byte, 56 minutes), PDF (1 byte, n pages)
  

  This talk is focused on ways to improve the quality of FreeBSD's ports and packages and it's partially based on the 5 months experience of writing and running the consecutive versions of "QA Tindy".
  Ion-Mihai "IOnut" Tetcu is a 28 years old FreeBSD ports committer and maintains about 40 ports scattered in the Ports Tree. He lives in Bucharest, Romania where he runs and co-owns an IT& company and he's a member of Romanian FreeBSD and FreeUnix User Group (RoFUG). His non-IT interests include history, philosophy and mountain climbing.

• EuroBSDCon 2008 - Robert Watson - FreeBSD Network Stack Performance Optimizations for Modern Hardware
  Source: EuroBSDCon
  Added: 22 October 2008
  Tags: eurobsdcon, eurobsdcon2008, freebsd, network stack, hardware, robert watson
  MP3 (1 byte, 53 minutes), OGG (1 byte, 53 minutes), PDF (1 byte, n pages)
  

  The arrival of high CPU core density, with commodity quad-core notebooks and 32-core servers, combined with 10gbps networking have transformed network design principles for operating systems. This talk will describe changes in the FreeBSD 6.x, 7.x, and forthcoming 8.x network stacks required to exploit multiple cores and serve 10gbps networks. The goal of the session will be to introduce the audience to general strategies used to improve performance, their rationales, and their impact on applications and users:
  • Introduction to the SMPng Project and the follow-on Netperf Project
  • Workloads and performance measurement
  • Efficient primitives to support modern network stacks
  • Multi-core and cache-aware network memory allocator
  • Fine-grained network stack locking
  • Load-balancing and contention-avoidance across multiple CPUs
  • CPU affinity for network stack data structures
  • TCP performance enhancements including TSO, LRO, and TOE
  • Zero-copy Berkely Packet Filter (BPF) buffers
  • Direct network stack dispatch from interrupt handlers
  • Multiple input and output queues
  
  Robert Watson is a researcher at the University of Cambridge Computer Laboratory investinging operating system and network security. Prior to joining the Computer Laboratory to work on a PhD, he was Senior Principal Scientist at McAfee Research, now SPARTA ISSO, a leading security research and development organization, directing government and commercial research contracts for customers that include DARPA, the US Navy, and Apple Computer. His research interests include operating system security, network stack structure and performance, and windowing system structure. He is also a member of the FreeBSD Core Team and president of the FreeBSD Foundation.

• EuroBSDCon 2008 - Paul Richards - eXtreme Programming: FreeBSD a case study
  Source: EuroBSDCon
  Added: 22 October 2008
  Tags: eurobsdcon, eurobsdcon2008, freebsd, extreme programming, paul richards
  MP3 (1 byte, 54 minutes), OGG (1 byte, 54 minutes), PDF (1 byte, n pages)
  

  Traditional project management methodologies are typically based on the waterfall model where there are distinct phases: requirements capture, design, implementation, testing, delivery. Once a project has moved on to the next phase there is no going back. The end result is often a late project that no-one wants anymore because the requirements have fundamentally changed by the time the project is delivered.

• EuroBSDCon 2008 - Brooks Davis - Isolating cluster jobs for performance and predictability
  Source: EuroBSDCon
  Added: 22 October 2008
  Tags: eurobsdcon, eurobsdcon2008, freebsd, cluster, brooks davis
  MP3 (1 byte, 51 minutes), OGG (1 byte, 51 minutes), PDF (1 byte, n pages)
  

  The Aerospace Corporation operates a federally funded research and development center in support of national-security, civil and commercial space programs. Many of our 2400+ engineers use a variety of computing technologies to support their work. Applications range from small models which are easily handled by desktops to parameter studies involving thousands of cpu hours and traditional, large scale parallel codes such as computational fluid dynamics and molecular modeling applications. Our primary resources used to support these large applications are computing clusters. Our current primary cluster, the Fellowship cluster consists of 352 dual-processor nodes with a total of 14xx cores. Two additional clusters, beginning at 150 dual-processor nodes each are being constructed to augment Fellowship. As in In any multiuser computing environment with limited resources, user competition for resources is a significant burden. Users want everything they need to do their job, right now. Unfortunately, other users may need those resources at the same time. Thus, systems to arbitrate this resource contention are necessary. On Fellowship we have deployed the Sun Grid Engine scheduler which scheduled batch jobs across the nodes. In the next section we discuss the performance problems that can occur when sharing resources in a high performance computing cluster. We then discuss range of possibilities to address these problems. We then explain the solutions we are investigating and describe our experiments with them. We then conclude with a discussion of future work.

• EuroBSDCon 2008 - Russel Sutherland - UTORvpn: A BSD based VPN service for the masses
  Source: EuroBSDCon
  Added: 22 October 2008
  Tags: eurobsdcon, eurobsdcon2008, freebsd, vpn, russel sutherland
  MP3 (1 byte, 52 minutes), OGG (1 byte, 52 minutes), PDF (1 byte, n pages)
  

  The University of Toronto is a large educational institutional with over 70,000 students and 10,000 staff and faculty. For the past three years, we have developed and implemented a ubiquitous VPN service, based up on OpenVPN and FreeBSD. The service has over 3000 active customers, with up to 35 simultaneous users. The system supports, Linux, Mac OS X and Windows XP/Vista/2000 clients. Tools have been developed to create a central CA which enables users to log in to a secure server and get their customized client, certificates and configuration. The NSIS installer is used to generate the customized windows installers. Similar packages are generated for the various Unix based clients. Additional WWW/PHP based tools, have been developed to monitor and log usage of the service, using standard graphs, alarms for excessive use and a certificate revocation mechanism. The system has been integrated into the local identity management system (Kerberos/LDAP) in order to authorize and authenticate users upon initiation and per session usage. All code is Open Source and freely available.

• EuroBSDCon 2007 Videos
  Source: EuroBSDCon
  Added: 10 October 2007
  Tags: eurobsdcon, eurobsdcon2007, videos
  Soren Straarup - An ARM from shoulder to hand (141 Mb), Pawel Jakub - FreeBSD/ZFS - last word in operating/file systems (203 Mb), Yvan VanHullebus - NETASQ and BSD: a success story (382 Mb), Claudio Jeker - Routing on OpenBSD (394 Mb), Brooks Davis - Using FreeBSD to Promote Open Source Development Methods (92 Mb), Gregers Petersen - Open Source - is it something new? (285 Mb), Antti Kantee - ReFUSE: Userspace FUSE Reimplementation Using puffs (197 Mb), Steven Murdoch - Hot or Not: Fingerprinting hosts through clock skew (235 Mb), Sam Smith - Fighting "Technical fires" (147 Mb), Kirk Mckusick - A Brief History of the BSD Fast Filesystem (251 Mb), George Neville-Neil - Network Protocol Testing in FreeBSD and in General (271 Kb), Robert Watson - FreeBSD Advanced Security Features (200 Mb), Sam Leffler - Long Distance Wireless (for Emerging Regions) (248 Mb), Simon L Nielsen - The FreeBSD Security Officer function (195 Kb), Stephen Borrill - Building products with NetBSD - thin-clients (364 Mb), Pierre Yves Ritschard - Load Balancing (219 Mb), Isaac Levy - FreeBSD jail(8) Overview, the Secure Virtual Server (350 Mb), Ryan Bickhart - Transparent TCP-to-SCTP Translation Shim Layer (376 Mb), John P Hartmann - Real Men's Pipes - When UNIX meets the mainframe mindset (315 Mb)
  

  EuroBSDCon 2007 Papers

• EuroBSDCon 2007 Papers
  Source: EuroBSDCon
  Added: 05 October 2007
  Tags: eurobsdcon, eurobsdcon2007, papers
  Pawel Jakub - FreeBSD/ZFS - last word in operating/file systems (337 Kb), Stephen Borrill - Building products with NetBSD - thin-clients (407 Kb), John P Hartmann - CMS Pipelines Explained (118 Kb), Soren Straarup - An ARM from shoulder to hand (307 Kb), Brooks Davis - Building clusters with FreeBSD (2.2 Mb), Steven Murdoch - Hot or Not: Fingerprinting hosts through clock skew (6.1 Mb), Brooks Davis - Using FreeBSD to Promote Open Source Development Methods (989 Kb), Sam Leffler - Long Distance Wireless (for Emerging Regions) (19 Mb), Antti Kantee - ReFUSE: Userspace FUSE Reimplementation Using puffs (102 Kb), Yvan VanHullebus - NETASQ and BSD: a success story (2.4 Mb), Ryan Bickhart - Transparent TCP-to-SCTP Translation Shim Layer (692 Kb), Pierre Yves Ritschard - Load Balancing (23 Kb), John P Hartmann - Real Men's Pipes - When UNIX meets the mainframe mindset (382 Kb), Claudio Jeker - Routing on OpenBSD (1.3 Mb), Marc Balmer - Supporting Radio Clocks in OpenBSD (304 Kb), Peter Hansteen - Firewalling with OpenBSD's PF packet filter (531 Kb), Simon L Nielsen - The FreeBSD Security Officer function (251 Kb), Robert Watson - FreeBSD Advanced Security Features (152 Kb), Ryan Bickhart - Transparent TCP-to-SCTP Translation Shim Layer (491 Kb), Kirk Mckusick - A Brief History of the BSD Fast Filesystem (145 Kb), George Neville-Neil - Network Protocol Testing in FreeBSD and in General (251 Kb), Sam Smith - Fighting "Technical fires" (1.4 Mb), Marko Zec - Network stack virtualization for FreeBSD 7.0 (401 Kb), Isaac Levy - FreeBSD jail(8) Overview, the Secure Virtual Server (120 Mb)
  

  EuroBSDCon 2007 Papers

• Andre Opperman - The papers I write for EuroBSDCon 05
  Source: EuroBSDCon
  Added: 14 January 2007
  Tags: eurobsdcon, eurobsdcon2005, paper, freebsd, networking, andre opperman
  Optimizing the FreeBSD IP and TCP Stack (1 Mb), New Networking Features in FreeBSD 6 (92 Kb)
  

  The papers I write for EuroBSDCon 05 on New Networking Feature in FreeBSD 6.0 and Optimizing FreeBSD IP and TCP in 7-CURRENT

• The presentation I gave at SUCON 04 (115 Kb)
  Source: Andre Opperman
  Added: 14 January 2007
  Tags: sucon, presentation, freebsd, networking, andre opperman
  

  The presentation I gave at SUCON 04 on 2nd September 2004 about enhancements/changes in FreeBSD 5.3 Networking Stack.

• AsiaBSDCon 2009 Paper List
  Source: AsiaBSDCon
  Added: 24 May 2009
  Tags: asiabsdcon, asiabsdcon2009
  FreeBSD and SOI-Asia Project Mohamad by Dikshie Fauzie (753 Kb, 4 pages), Deprecating groff for BSD manual display by Kristaps Dzonsons (114 Kb, 8 pages), FreeBSD on high performance multi-core embedded PowerPC systems - Rafal Jaworowski (359 Kb, 12 pages), An Overview of FreeBSD/mips by M. Warner Losh (67 Kb, 8 pages), Active-Active Firewall Cluster Support in OpenBSD by David Gwynne (154 Kb, 20 pages), Mail system for distributed network by Andrey Zakharchenko (150 Kb, 3 pages), OpenBGPD - Bringing full views to OpenBSD since 2004 by Claudio Jeker (401 Kb, 6 pages), Environmental Independence: BSD Kernel TCP/IP in Userspace by Antti Kantee (213 Kb, 10 pages), Crypto Acceleration on FreeBSD by Philip Paeps (58 Kb, 3 pages), Isolating Cluster Users (and Their Jobs) for Performance and Predictability by Brooks Davis (662 Kb, 7 pages), PC-BSD - Making FreeBSD on the Desktop a reality by Kris Moore (351 Kb, 9 pages), The Locking Infrastructure in the FreeBSD kernel by Attilio Rao (55 Kb, 7 pages), OpenBSD Hardware Sensors Framework by Constantine A. Murenin (245 Kb, 14 pages)
  

  Papers of the AsiaBSDCon 2009

• AsiaBSDCon 2008 Paper List
  Source: AsiaBSDCon
  Added: 08 April 2008
  Tags: asiabsdcon, asiabsdcon2008
  Using FreeBSD to Promote Open Source Development Methods, Brooks Davis, Michael AuYeung, Mark Thomas (The Aerospace Corporation) (483 Kb), OpenBSD Network Stack Internals, Claudio Jeker (The OpenBSD Project) (410 Kb), Tracking FreeBSD in a Commercial Setting, M. Warner Losh (Cisco Systems, Inc.) (94 Kb), Send and Receive of File System Protocols: Userspace Approach With puffs, Antti Kantee (Helsinki University of Technology, Finland) (126 Kb), GEOM --- in Infrastructure We Trust, Pawel Jakub Dawidek (The FreeBSD Project) (91 Kb), Reducing Lock Contention in a Multi-Core System, Randall Stewart (Cisco Systems, Inc.) (72 Kb), PC-BSD: FreeBSD on the Desktop, Matt Olander (iXsystems) (6.4 Mb), Logical Resource Isolation in the NetBSD Kernel, Kristaps Dzonsons (Centre for Parallel Computing, Swedish Royal Institute of Technology) (97 Kb), Whole of the proceedings (9.3 Mb), Gaols: Implementing Jails Under the kauth Framework, Christoph Badura (The NetBSD Foundation) (92 Kb), Cover page (467 Kb), Sleeping Beauty --- NetBSD on Modern Laptops, Jorg Sonnenberger, Jared D. McNeill (The NetBSD Foundation) (87 Kb), A Portable iSCSI Initiator, Alistair Crooks (The NetBSD Foundation) (341 Kb), BSD implementations of XCAST6, Yuji IMAI, Takahiro KUROSAWA, Koichi SUZUKI, Eiichi MURAMOTO, Katsuomi HAMAJIMA, Hajimu UMEMOTO, and Nobuo KAWAGUTI (XCAST fan club, Japan) (526 Kb)
  

  Papers of the AsiaBSDCon 2007

• AsiaBSDCon 2007 Paper/Slides List
  Source: AsiaBSDCon
  Added: 17 March 2007
  Tags: asiabsdcon, asiabsdcon2007
  SHISA: The Mobile IPv6/NEMO BS Stack Implementation Current Status, Keiichi Shima (Internet Initiative Japan Inc., Japan), Koshiro Mitsuya, Ryuji Wakikawa (Keio University, Japan), Tsuyoshi Momose (NEC Corporation, Japan), Keisuke Uehara (Keio University, Japan) [paper] (311 Kb), An ISP Perspective, jail(8) Virtual Private Servers, Isaac Levy (NYC*BUG/LESMUUG, USA) [paper] (140 Kb), A NetBSD-based IPv6 NEMO Mobile Router, Jean Lorchat, Koshiro Mitsuya, Romain Kuntz (Keio University, Japan) [paper] (412 Kb), Whole of the Proceedings (6.5 Mb), Cover page (588 Kb), Porting the ZFS File System to the FreeBSD Operating System, Pawel Jakub Dawidek (pjd at FreeBSD.org, Poland) [slides] (278 Kb), Implementation and Evaluation of the Dual Stack Mobile IPv6, Koshiro Mitsuya, Ryuji Wakikawa, Jun Murai (Keio University, Japan) [paper] (1071 Kb), puffs - Pass to Userspace Framework File System, Antti Kantee (Helsinki University of Technology, Finland) [slides] (116 Kb), Reflections on Building a High Performance Computing Cluster Using FreeBSD, Brooks Davis (The Aerospace Corporation/brooks at FreeBSD.org, USA) [paper] (1371 Kb), Nsswitch Development: Nss-modules and libc Separation and Caching, Michael A Bushkov (Southern Federal University/bushman at FreeBSD.org, Russia) [paper] (32 Kb), Bluffs: BSD Logging Updated Fast File System, Stephan Uphoff (Yahoo!, Inc./ups at FreeBSD.org, USA) [slides] (601 Kb), Security Measures in OpenSSH, Damien Miller (djm at openbsd.org, Australia) [paper] (97 Kb), Porting the ZFS File System to the FreeBSD Operating System, Pawel Jakub Dawidek (pjd at FreeBSD.org, Poland) [paper] (96 Kb), An ISP Perspective, jail(8) Virtual Private Servers, Isaac Levy (NYC*BUG/LESMUUG, USA) [slides] (20 Mb), Support for Radio Clocks in OpenBSD, Marc Balmer (mbalmer at openbsd.org, Switzerland) [paper] (86 Kb), How the FreeBSD Project Works, Robert N M Watson (University of Cambridge/rwatson at FreeBSD.org, United Kingdom) [paper] (328 Kb), puffs - Pass to Userspace Framework File System, Antti Kantee (Helsinki University of Technology, Finland) [paper] (68 Kb)
  

  Slides and papers of the AsiaBSDCon 2007

• Robert Watson's Slides from EuroBSDCon 2004
  Source: Robert Watson
  Added: 14 January 2007
  Tags: eurobsdcon, eurobsdcon2004, slides, trustedbsd, freebsd, mac, robert watson
  TrustedBSD MAC Framework on FreeBSD and Darwin (270 Kb)
  

  Robert Watson will describe the design and application of the TrustedBSD MAC Framework, a flexible kernel security framework developed on FreeBSD, and recently experimentally ported to Apple's Darwin operating system. The MAC Framework permits loadable access control kernel modules to be loaded, modifying the security behavior of the operating system, including SEBSD, a port of the SELinux FLASK/TE security model to FreeBSD.

• Robert Watson's Slides from UKUUG LISA 2006
  Source: Robert Watson
  Added: 14 January 2007
  Tags: ukuug, slides, openbsm, trustedbsd, freebsd, robert watson
  CAPP-Compliant Security Event Audit System for Mac OS X and FreeBSD (UKUUG LISA 2006). (199 Kb)
  

  UKUUG LISA 2006 took place in Durham, UK in March, 2006. On this page, you can find my slides from this conference.
  > OpenBSM is a BSD-licensed implementation of Sun's Basic Security Module (BSM) API and file format, and is the foundation of the TrustedBSD audit implementation for FreeBSD. This talk will cover the requirements, design, and implementation of audit support for FreeBSD. Security audit support provides detailed logging of security-relevant events, and meets the requirements of the CAPP Common Criteria protection profile.

• Robert Watson's Slides from EuroBSDCon 2006 and FreeBSD Developer Summit
  Source: Robert Watson
  Added: 14 January 2007
  Tags: eurobsdcon, eurobsdcon2006, robert watson
  How the FreeBSD Project Works (EuroBSDCon 2006 Full Conference) (4.4 Mb), TrustedBSD presentation on Audit and priv(9) (Developer Summit) (166 Kb)
  

  EuroBSDCon 2006 took place in Milan, Italy, and not only offered excellent food on a flexible schedule, but also an interesting array of talks on work spanning the BSD's. On this page, you can find my slides from the FreeBSD developer summit and full conference.
  > Status report on the TrustedBSD Project: introduction and status regarding Audit, plus a TODO list; introduction to the priv(9) work recently merged to 7.x.
  > The FreeBSD Project is one of the oldest and most successful open source operating system projects, seeing wide deployment across the IT industry. From the root name servers, to top tier ISPs, to core router operating systems, to firewalls, to embedded appliances, you can't use a networked computer for ten minutes without using FreeBSD dozens of times. Part of FreeBSD's reputation for quality and reliability comes from the nature of its development organization--driven by a hundreds of highly skilled volunteers, from high school students to university professors. And unlike most open source projects, the FreeBSD Project has developers who have been working on the same source base for over twenty years. But how does this organization work? Who pays the bandwidth bills, runs the web servers, writes the documentation, writes the code, and calls the shots? And how can developers in a dozen time zones reach agreement on the time of day, let alone a kernel architecture? This presentation will attempt to provide, in 45 minutes, a brief if entertaining snapshot into what makes FreeBSD run.

• Robert Watson's Slides from BSDCan 2006 and FreeBSD Developer Summit
  Source: Robert Watson
  Added: 14 January 2007
  Tags: bsdcan, bsdcan2006, notes, devsummit, robert watson
  SMPng Network Stack Update (Developer Summit) (91 Kb), How the FreeBSD Project Works (BSDCan 2006 Full Conference) (4.4 Mb Kb), Notes from the 10 May 2006 Meeting of the Network Stack Cabal (Developer Summit) (72 Kb), TrustedBSD Project Update (Developer Summit) (120 Kb)
  

  As usual, Dan Langille ran an excellent BSDCan conference. On this page, you can find my slides from the developer summit and full conference, excluding the contents of the WIPs, for which I don't have permission to redistribute the slides.

• Robert Watson's Slides from EuroBSDCon 2005
  Source: Robert Watson
  Added: 14 January 2007
  Tags: eurobsdcon, eurobsdcon2005, slides, freebsd, smp, robert watson, poul-henning kamp, ed maste
  Introduction to Multithreading and Multiprocessing in the FreeBSD SMPng Network Stack (370 Kb)
  

  EuroBSDCon 2005 took place in Basel, Switzerland in November, 2005. Due to an injury, I was unable to attend the conference itself, and my talks were presented in absentia by Poul-Henning Kamp and Ed Maste, who have my greatest appreciation!
  > The FreeBSD SMPng Project has spent the past five years redesigning and reimplementing SMP support for the FreeBSD operating system, moving from a Giant-locked kernel to a fine-grained locking implementation with greater kernel threading and parallelism. This paper introduces the FreeBSD SMPng Project, its architectural goals and implementation approach. It then explores the impact of SMPng on the FreeBSD network stack, including strategies for integrating SMP support into the network stack, locking approaches, optimizations, and challenges.

• Robert Watson's Slides from BSDCan 2004
  Source: Robert Watson
  Added: 14 January 2007
  Tags: bsdcan, bsdcan2004, slides, trustedbsd, freebsd, robert watson
  TrustedBSD: Trusted Operating System Features for BSD (277 Kb)
  

  BSDCan 2004 took place at the University of Ottawa in Ottawa, Canada. On this page, you can find my slides from the conference.
  > Robert Watson will describe a variety of pieces of work done as part of the TrustedBSD Project, including the TrustedBSD MAC Framework, Audit facilities for FreeBSD, as well as supporting infrastructure work such as GEOM/GBDE, UFS2, OpenPAM. He will also discuss how certification and evaluation play into feature selection, design, and documentation.

• Robert Watson's Slides from AsiaBSDCon 2004
  Source: Robert Watson
  Added: 14 January 2007
  Tags: asiabsdcon, asiabsdcon2004, robert watson
  AsiaBSDCon 2004 BSD (FreeBSD) BoF session (1.4 Mb), Extensible Kernel Security through the TrustedBSD MAC Framework. (135 Kb)
  

  AsiaBSDCon 2004 took place in Taipei, Taiwan, in March 2004, and was hosted by Academia Sinica.

• A Tale of Four Kernels
  Source: Diomidis Spinellis
  Added: 17 May 2008
  Tags: freebsd, linux, solaris, windows, article, kernel, diomidis spinellis
  Diomidis Spinellis. A tale of four kernels. In Wilhem Schfer, Matthew B. Dwyer, and Volker Gruhn, editors, ICSE '08: Proceedings of the 30th International Conference on Software Engineering, pages 381-390, New York, May 2008. Association for Computing Machinery. , Diomidis Spinellis. A tale of four kernels. In Wilhem Schfer, Matthew B. Dwyer, and Volker Gruhn, editors, ICSE '08: Proceedings of the 30th International Conference on Software Engineering, pages 381-390, New York, May 2008. Association for Computing Machinery.
  

  The FreeBSD, GNU/Linux, Solaris, and Windows operating systems have kernels that provide comparable facilities. Interestingly, their code bases share almost no common parts, while their development processes vary dramatically. We analyze the source code of the four systems by collecting metrics in the areas of file organization, code structure, code style, the use of the C preprocessor, and data organization. The aggregate results indicate that across various areas and many different metrics, four systems developed using wildly different processes score comparably. This allows us to posit that the structure and internal quality attributes of a working, non-trivial software artifact will represent first and foremost the engineering requirements of its construction, with the influence of process being marginal, if any.

• Global software development in the FreeBSD project
  Source: Diomidis Spinellis
  Added: 24 January 2007
  Tags: freebsd, article, global software development, domidis spinellis
  In NASSCOM Quality Summit 2006: Setting benchmarks in global outsourcing, Bangalore, India, September 2006. National Association of Software and Services Companies (NASSCOM)., International Workshop on Global Software Development for the Practitioner, pages 73-79. ACM Press, May 2006, Linux Format, (11):60?63, September/October 2006. In Greek.
  

  FreeBSD is a sophisticated operating system developed and maintained as open-source software by a team of more than 350 individuals located throughout the world. This study uses developer location data, the configuration management repository, and records from the issue database to examine the extent of global development and its effect on productivity, quality, and developer cooperation. The key findings are that global development allows round-the-clock work, but there are some marked differences between the type of work performed at different regions. The effects of multiple dispersed developers on the quality of code and productivity are negligible. Mentoring appears to be sometimes associated with developers living closer together, but ad-hoc cooperation seems to work fine across continents.

• New York City BSD Con 2008
  Source: New York City *BSD User Group
  Added: 24 November 2008
  Tags: nycbsdcon2008, nycbsdcon, presentation
  Julio M. Merino Vidal: An introduction to the Automated Testing Framework (ATF) for NetBSD. (570 Kb, 18 pages), Mike Silbersack: Detecting TCP regressions with tcpdiff. (88 Kb, 28 pages), Metthew Dillon: The HAMMER File System. (820 Kb, 16 pages), Kurt Miller: OpenBSD's Position Independent Executables (PIE) Implementation. (21 pages), Adrian Chadd: High-throughput concurrent disk IO in FreeBSD. (197 Kb, 92 pages), Anders Magnusson: Design and Implementation of the Portable C Compiler. (123 Kb, 29 pages), Jason L Wright: When Hardware Is Wrong, or "They can Fix It In Software". (1.7 Mb, 22 pages)
  

  Slides of presentations given at New York City BSD Conference 2008.

• New York City BSD Con 2008
  Source: New York City *BSD User Group
  Added: 13 October 2008
  Tags: nycbsdcon2008, nycbsdcon, presentation
  Jeremy C. Reed: Introduction to DNSSEC. (15 Mb), Michael Lucas: Network Refactoring, or doing an oil change at 80 MPH. (10 Mb), Anders Magnusson: Design and Implementation of the Portable C Compiler. (15 Mb), Jason Dixon: BSD versus GPL. (4 Mb), Kurt Miller: OpenBSD's Position Independent Executables (PIE) Implementation. (10 Mb), Metthew Dillon: The HAMMER File System. (14 Mb), Pawel Jakub Dawidek: A closer look at the ZFS file system. (16 Mb), Jason L Wright: When Hardware Is Wrong, or "They can Fix It In Software". (9 Mb), Michael Shalayeff: Porting PCC. (11 Mb), Adrian Chadd: High-throughput concurrent disk IO in FreeBSD. (14 Mb), Mike Silbersack: Detecting TCP regressions with tcpdiff. (11 Mb), Julio M. Merino Vidal: An introduction to the Automated Testing Framework (ATF) for NetBSD. (10 Mb)
  

  Audio recordings of presentations given at New York City BSD Conference 2008. Courtesy of nikolai at fetissov.org. The main page also has links to the slides.

• Building a High-Performance Computing Cluster Using FreeBSD
  Source: New York City *BSD User Group
  Added: 22 March 2008
  Tags: nycbug, presentation, high performance computing, freebsd, brooks davis
  MP3 version (9 Mb, 80 minutes)
  

  Special NYC*BUG meeting with FreeBSD developer Brooks Davis
  > Since late 2000 we have developed and maintained a general purpose technical and scientific computing cluster running the FreeBSD operating system. In that time we have grown from a cluster of 8 dual Intel Pentium III systems to our current mix of 64 dual, quad-core Intel Xeon and 289 dual AMD Opteron systems.

  In this talk we reflect on the system architecture as documented in our BSDCon 2003 paper "Building a High-performance Computing Cluster Using FreeBSD" and our changes since that time. After a brief overview of the current cluster we revisit the architectural decisions in that paper and reflect on their long term success. We then discuss lessons learned in the process. Finally, we conclude with thoughts on future cluster expansion and designs.

  Bio
  > Brooks Davis is an Engineering Specialist in the High Performance Computing Section of the Computer Systems Research Department at The Aerospace Corporation. He has been a FreeBSD user since 1994, a FreeBSD committer since 2001, and a core team member since 2006. He earned a Bachelors Degree in Computer Science from Harvey Mudd College in 1998.

  His computing interests include high performance computing, networking, security, mobility, and, of course, finding ways to use FreeBSD in all these areas. When not computing, he enjoys reading, cooking, brewing and pounding on red-hot iron in his garage blacksmith shop.

• New York City BSD Con 2006
  Source: New York City *BSD User Group
  Added: 01 November 2006
  Tags: nycbug, nycbsdcon, nycbsdcon2006, presentation
  Russell Sutherland: BSD on the Edge of the Enterprise. (12 Mb), Bob Beck: spamd - spam deferral daemon. (16 Mb), Bjorn Nelson: A Build System for FreeBSD (9 Mb), Jason Dixon: BSD Is Dying. (5 Mb), Kristaps Johnson: BSD Virtualisation with sysjail. (15 Mb), Bob Beck: PF, it is not just for firewalls anymore. (15 Mb), Jason Wright: OpenBSD on sparc64. (9 Mb), Brian A. Seklecki: A Framework for NetBSD Network Appliances. (10 Mb), Johnny C. Lam: The "hidden dependency" problem. (13 Mb), Corey Benninger: Security with Ruby on Rails in BSD (14 Mb), Wietse Venema: Postfix as a Secure Programming Example. (16 Mb), Marco Peereboom: Bio & Sensors in OpenBSD. (11 Mb)
  

  Audio recordings of presentations given at New York City BSD Conference 2006. Courtesy of nikolai at fetissov.org. The main page also has links to the slides.

• Nate Lawson on ACPI (245 Mb)
  Source: Bay Area FreeBSD Users Group
  Added: 09 September 2006
  Tags: bafug, presentation, freebsd, acpi, nate lawson
  

  Our Topic: FreeBSD's ACPI implementation: The details.
  > Our Speaker: Nate Lawson, FreeBSD Committer.
  > Our Topic: FreeBSD's ACPI implementation is based on code for ACPI released by Intel. Nate and others wrote the glue code to make this code work on FreeBSD. He explains how this was done, and why.

• Network Protocol Development Tools and Techniques for FreeBSD (211 Mb)
  Source: Bay Area FreeBSD Users Group
  Added: 10 August 2006
  Tags: bafug, presentation, freebsd, packet construction set, george neville-neil
  

  Our Topic: Network Protocol Development Tools and Techniques for FreeBSD
  > Our Speaker: George Neville-Neil, co-author of the "Design and Implementation of the FreeBSD Operating System" "daemon" book.
  > Our Topic: While computers have gotten faster and more powerful the tools we use to develop network protocols, such as TCP, UDP, IPv4 and IPv6 have not. Most network protocols are developed, in C, in the kernel, and require a lot of work to test. Over the past year or so I have been working with virtual machines, a couple of pieces of open source software, and begun developing a library for use in protocol testing. This talk will cover three topics:
  1. Developing and testing kernel code with Virtual Machines
  2. Finding good tests for networking code
  3. Packet Construction Set (PCS) a new library for writing protocol tests

• MeetBSD 2008 in California - Presentation
  Source: MeetBSD
  Added: 19 November 2008
  Tags: meetbsd, meetbsd2008, freebsd, presentations
  FreeBSD Foundation Update & Recognition by Robert Watson (3.2 Mb, 8 pages), BSD Certification by Dru Lavigne (80 Kb, 19 pages), Crypto Acceleration by Philip Paeps (256 Kb, 20 pages), "Help, my system is slow!" Profiling tools, tips and tricks by Kris Kennaway (172 Kb, 29 pages), Embedding FreeBSD by M. Warner Losh (685 Kb, 31 pages), Isilon and FreeBSD by Zach Loafman (136 Kb, 25 pages), Isolating Cluster Jobs for Performance and Predictability by Brooks Davis (900 Kb, 24 pages), PC-BSD 7 - A Developer's Perspective by Kris Moore (580 Kb, 45 pages), FreeBSD Network Stack Performance - Optimizations for Modern Hardware by Robert Watson (5.5 Mb, 43 pages), A closer look at the ZFS file system by Pawel Jakub Dawidek (470 Kb, 45 pages)
  

  MeetBSD 2008 at the Googleplex in Mountain View, California to celebrate FreeBSD's 15th Anniversary!

• MeetBSD 2007 - Presentations and recordings
  Source: MeetBSD
  Added: 28 May 2008
  Tags: meetbsd, meetbsd2007
  Slawomir Zak - DTrace - Monitoring i strojenie systemu w XXI wieku (546 Mb), Brooks Davis - Reflections on Building a High-Performance Computing Cluster Using FreeBSD (401 Mb), Christian Brüffer - Protecting your Privacy with FreeBSD and Tor (416 Kb, 34 Pages), Rafal Jaworowski - FreeBSD do zabudowy, czyli nie tylko pecety (600 Kb, 21 pages), Dominik Hamera, Jakub Klausa - Nowoczesne rozwiazania bezprzewodowe w systemie FreeBSD (165 Mb), Christian Brüffer - Protecting your Privacy with FreeBSD and Tor (409 Kb), Matt Olander - PC-BSD: FreeBSD on the Desktop (272 Mb), Adam Bartman, Rafal Grzebyk - Nowoczesna infrastruktura telefoniczna w oparciu o systemy z rodziny BSD (105 Mb), Pawel Solyga - Meet BSD projects from Google Summer of Code 2007 (6.0 Mb), Brooks Davis - Reflections on Building a High-Performance Computing Cluster Using FreeBSD (1.7 Mb, 25 Pages), Rafal Jaworowski - FreeBSD do zabudowy, czyli nie tylko pecety (638 Mb), Philip Paeps - Detangling and debugging: friends in unexpected places (162 Mb), Pawel Solyga - Meet BSD projects from Google Summer of Code 2007 (3.7 Mb, 71 Pages), Pawel Solyga - Meet BSD projects from Google Summer of Code 2007 (308 Mb), Adam Bartman, Rafal Grzebyk - Nowoczesna infrastruktura telefoniczna w oparciu o systemy z rodziny BSD (3.9 Mb, 71 Pages), Philip Paeps - Detangling and debugging: friends in unexpected places (495 Kb, 53 Pages), Kris Kennaway - New features and improvements in FreeBSD 7 (336 Kb, 37 pages), Slawomir Zak - DTrace - Monitoring i strojenie systemu w XXI wieku (1.1 Mb, 35 Pages), Kris Kennaway - New features and improvements in FreeBSD 7 (564 Mb)
  

  MeetBSD 2007 at the Conference Centre-PWSBiA Congress in Warsaw

• Manuel Trujillo - FreeBSD para usuarios de GNU/Linux (32 Kb)
  Source: BSDCon Spain
  Added: 27 May 2008
  Tags: bsdcon-barcelona, spanish, presentation, freebsd, linux, manuel trujillo
  

  Charla sobre las diferencias que puede encontrar un usuario de un sistema operativo GNU/Linux cuando accede a un sistema operativo FreeBSD, y sugerencias superar la posible desorientación.

• Jesús Rodriguez - SIP y VozIP con FreeBSD (527 Kb, 40 pages)
  Source: BSDCon Spain
  Added: 27 May 2008
  Tags: bsdcon-barcelona, spanish, presentation, asterisk, openser, freebsd, sip, voip, jesus rodriguez
  

  Repaso a las diferentes aplicaciones y servicios relacionados con SIP y VozIP que pueden usarse en FreeBSD. Entre estas apliaciones destacan OpenSER y Asterisk, ya que usados de forma conjunta pueden ofrecer una larga lista de servicios de forma rápida, segura y escalable.

• COMPLETE Hard Disk Encryption with FreeBSD
  Source: 22nd Chaos Communication Congress
  Added: 23 August 2006
  Tags: ccc, ccc2005, ccc22, presentation, freebsd, harddisk encryption, marc schiesser
  Google Video (1:06:07), Slides (679Kb), Bittorrent link (37Kb)
  

  COMPLETE Hard Disk Encryption with FreeBSD, by Marc Schiesser

  Learn how to effectively protect not only your data but also your applications.

  Most technologies and techniques intended for securing digital data focus on protection while the machine is turned on mostly by defending against remote attacks. An attacker with physical access to the machine, however, can easily circumvent these defenses by reading out the contents of the storage medium on a different, fully accessible system or even compromise program code on it in order to leak encrypted information. Especially for mobile users, that threat is real. And for those carrying around sensitive data, the risk is most likely high. This talk will introduce a method of mitigating that particular risk by protecting not only the data through encryption, but also the applications and the operating system from being compromised while the machine is turned off.

• FreeBSD Security Officer funktionen
  Source: AArhus Unix Users Group
  Added: 15 January 2007
  Tags: aauug, presentation, danish, freebsd, security officer, simon l nielsen
  PDF (danish) (211 Kb)
  

  "FreeBSD Security Officer funktionen" at the AAUUG, AAUUG, 22 August 2006 by Simon L. Nielsen (FreeBSD Deputy Security Officer)

• FreeBSD Security Officer funktionen (210 Kb)
  Source: BSD UNIX bruger gruppe i Danmark
  Added: 15 January 2007
  Tags: aauug, presentation, danish, freebsd, security officer, simon l nielsen
  

  "FreeBSD Security Officer funktionen" at the BSD-DK, 26 August 2006 by Simon L. Nielsen (FreeBSD Deputy Security Officer)

• Google Tech Talks June 20, 2007: How the FreeBSD Project Works
  Source: Google Tech Talks
  Added: 04 July 2007
  Tags: google, presentation, freebsd, freebsd project, robert watson
  AVI (321 Mb, 51 minutes)
  

  The FreeBSD Project is one of the oldest and most successful open source operating system ... all projects, seeing wide deployment across the IT industry. From the root name servers, to top tier ISPs, to core router operating systems, to firewalls, to embedded appliances, you can't use a networked computer for ten minutes without using FreeBSD dozens of times. Part of FreeBSD's reputation for quality and reliability comes from the nature of its development organization--driven by a hundreds of highly skilled volunteers, from high school students to university professors. And unlike most open source projects, the FreeBSD Project has developers who have been working on the same source base for over twenty years. But how does this organization work? Who pays the bandwidth bills, runs the web servers, writes the documentation, writes the code, and calls the shots? And how can developers in a dozen time zones reach agreement on the time of day, let alone a kernel architecture? This presentation will attempt to provide, in 45 minutes, a brief if entertaining snapshot into what makes FreeBSD run.

  Speaker: Robert Watson Robert Watson is a researcher at the University of Cambridge Computer Laboratory investinging operating system and network security. Prior to joining the Computer Laboratory to work on a PhD, he was a Senior Principal Scientist at McAfee Research, now SPARTA ISSO, a leading security research and development organization, where he directed government and commercial research contracts for customers that include DARPA, the US Navy, and Apple Computer. His research interests include operating system security, network stack structure and performance, and windowing system structure. He is also a member of the FreeBSD Core Team and president of the FreeBSD Foundation.

• OpenFest 2005 Videos
  Source: OpenFest
  Added: 27 March 2008
  Tags: openfest, openfest2005, presentation
  Official Bulgarian FreeBSD Mirror - Dimiter Vasilev (411 Mb), Embedding BSD - Ivo Vachkov (345 Mb), Route and firewall redundancy using CARP and pfsync - Atanas Bachvarov (153 Mb), FreeBSD Jails - Deyan Dyankov (13 Mb), QoS etc with OpenBSD pf (501 Mb), DIY FreeBSD Port (326 Mb)
  

  Various videos of OpenFest 2005 (Bulgarian)

• Discussion - What's cooking for FreeBSD 7.0?
  Source: OpenFest
  Added: 27 March 2008
  Tags: openfest, openfest2007, discussion, freebsd, freebsd7
  AVI (105 Mb)
  

  Discussion - What's cooking for FreeBSD 7.0? (Bulgarian)

• Dimitri Vasileva - Visualizing Security Threats with Social Networking Software
  Source: OpenFest
  Added: 27 March 2008
  Tags: openfest, openfest2007, presentation, freebsd, security, social networking, dimitri vasileva
  AVI (331 Mb)
  

  Dimitri Vasileva - Visualizing Security Threats with Social Networking Software (Bulgarian)

• Shcheryana Shopova - SNMP monitoring
  Source: OpenFest
  Added: 27 March 2008
  Tags: openfest, openfest2007, presentation, freebsd, snmp, monitoring, shcheryana shopova
  AVI (271 Mb)
  

  Shcheryana Shopova - SNMP monitoring (Bulgarian)

• Willow Vachkov - FreeBSD and the new network and transport protocols (IPv6 and SCTP)
  Source: OpenFest
  Added: 27 March 2008
  Tags: openfest, openfest2007, presentation, freebsd, ipv6, sctp, willow vanchkov
  AVI (251 Mb)
  

  Willow Vachkov - FreeBSD and the new network and transport protocols (IPv6 and SCTP) (Bulgarian)

• Atanas Bchvarov - Packet Filtering in FreeBSD
  Source: OpenFest
  Added: 27 March 2008
  Tags: openfest, openfest2007, presentation, freebsd, atanas bchvarov
  AVI (186 Mb)
  

  Atanas Bchvarov - Packet Filtering in FreeBSD (Bulgarian)

• Nikolai Denev - FreeBSD goes Zettabyte
  Source: OpenFest
  Added: 27 March 2008
  Tags: openfest, openfest2007, presentation, freebsd, zettabyte, nikolai denev
  AVI (358 Mb)
  

  Nikolai Denev - FreeBSD goes Zettabyte (Bulgarian)

• Vasil Dimov - The FreeBSD ports collection - tips and tricks
  Source: OpenFest
  Added: 27 March 2008
  Tags: openfest, openfest2007, presentation, freebsd, ports collection, vasil dimov
  AVI (341 Mb)
  

  Vasil Dimov - The FreeBSD ports collection - tips and tricks (Bulgarian)

• FreeBSD ports Erwin Lansing
  Source: OpenFest
  Added: 15 January 2007
  Tags: openfest, openfest2006, presentation, freebsd, port manager, erwin lansing
  PDF (128 Kb)
  

  Case study : managing a worldwide open source project: FreeBSD port manager

• FreeBSD: Hard disk encryption
  Source: Linux and FreeBSD video tutorials. For everyone.
  Added: 03 May 2007
  Tags: unix-tutorial, flash, freebsd, encryption
  

  How to protect your data on FreeBSD machine even when your computer is turned off? This hard disk encryption guide will help.

• FreeBSD: First time install and configure
  Source: Linux and FreeBSD video tutorials. For everyone.
  Added: 03 May 2007
  Tags: unix-tutorial, flash, freebsd
  

  Tutorial how to install and configure FreeBSD. It seems that comments in video are in Japanese :)

• FreeBSD: using ports system
  Source: Linux and FreeBSD video tutorials. For everyone.
  Added: 03 May 2007
  Tags: unix-tutorial, flash, freebsd, ports
  

  Using ports system in FreeBSD to install etherape.

• FreeBSD installation
  Source: Linux and FreeBSD video tutorials. For everyone.
  Added: 03 May 2007
  Tags: unix-tutorial, flash, freebsd
  

  Step-by-step installation of FreeBSD operating system.

• Luigi Rizzo - GEOM based disk schedulers for FreeBSD
  Source: BSDCan - The Technical BSD Conference
  Added: 25 May 2009
  Tags: bsdcan, bsdcan2009, presentation, freebsd, geom, disk schedulers, luigi rzzo
  Slides (430 Kb, 40 pages)
  

  GEOM based disk schedulers for FreeBSD

  The high cost of seek operations makes the throughput of disk devices very sensitive to the offered workload. A disk scheduler can then help reorder requests to improve the overall throughput of the device, or improve the service guarantees for individual users, or both.

  Research results in recent years have introduced, and proven the effectiveness of, a technique called "anticipatory scheduling". The basic idea behind this technique is that, in some cases, requests that cause a seek should not be served immediately; instead, the scheduler should wait for a short period of time in case other requests arrive that do not require a seek to be served. With many common workloads, dominated by sequential synchronous requests, the potential loss of throughput caused by the disk idling times is more than balanced by the overall reduction of seeks.

  While a fair amount of research on disk scheduling has been conducted on FreeBSD, the results were never integrated in the OS, perhaps because the various prototype implementations were very device-specific and operated within the device drivers. Ironically, anticipatory schedulers are instead a standard part of Linux kernels.

  This talk has two major contributions:

  First, we will show how, thanks to the flexibility of the GEOM architecture, an anticipatory disk scheduling framework has been implemented in FreeBSD with little or no modification to a GENERIC kernel. While these schedulers operate slightly above the layer where one would naturally put a scheduler, they can still achieve substantial performance improvements over the standard disk scheduler; in particular, even the simplest anticipatory schedulers can prevent the complete trashing of the disk performance that often occurs in presence of multiple processes accessing the disk.

  Secondly, we will discuss how the basic anticipatory scheduling technique can be used not only to improve the overall throughput of the disk, but also to give service guarantees to individual disk clients, a feature that is extremely important in practice e.g., when serving applications with pseudo-real-time constraints such as audio or video streaming ones.

  A prototype implementation of the scheduler that will be covered in the presentation is available at http://info.iet.unipi.it/~luigi/FreeBSD/

• Randi Harper - Automating FreeBSD Installations
  Source: BSDCan - The Technical BSD Conference
  Added: 25 May 2009
  Tags: bsdcan, bsdcan2009, presentation, freebsd, pxe, sysinstall, randi harper
  Slides (33 Kb, 14 pages)
  

  Automating FreeBSD Installations
  PXE Booting and install.cfg Demystified

  This paper will provide an explanation of the tools involved in performing an automated FreeBSD install and a live demonstration of the process.

  FreeBSD's sysinstall provides a powerful and flexible mechanism for automated installs but doesn't get used very often because of a lack of documentation.

• Brooks Davis - Isolating Cluster Jobs for Performance and Predictability
  Source: BSDCan - The Technical BSD Conference
  Added: 25 May 2009
  Tags: bsdcan, bsdcan2009, presentation, freebsd, cluster, brooks davis
  Slides (1.4 Mb, 27 pages)
  

  Isolating Cluster Jobs for Performance and Predictability

  At The Aerospace Corporation, we run a large FreeBSD based computing cluster to support engineering applications. These applications come in all shapes, sizes, and qualities of implementation. To support them and our diverse userbase we have been searching for ways to isolate jobs from one another in ways that are more effective than Unix time sharing and more fine grained than allocating whole nodes to jobs.

  In this talk we discuss the problem space and our efforts so far. These efforts include implementation of partial file systems virtualization and CPU isolation using CPU sets.

• John Baldwin - Multiple Passes of the FreeBSD Device Tree
  Source: BSDCan - The Technical BSD Conference
  Added: 25 May 2009
  Tags: bsdcan, bsdcan2009, presentation, freebsd, device tree, john baldwin
  Slides (60 Kb, 15 pages), Paper (103 Kb, 8 pages)
  

  Multiple Passes of the FreeBSD Device Tree

  The existing device driver framework in FreeBSD works fairly well for many tasks. However, there are a few problems that are not easily solved with the current design. These problems include having "real" device drivers for low-level hardware such as clocks and interrupt controllers, proper resource discovery and management, and allowing most drivers to always probe and attach in an environment where interrupts are enabled. I propose extending the device driver framework to support multiple passes over the device tree during boot. This would allow certain classes of drivers to be attached earlier and perform boot-time setup before other drivers are probed and attached. This in turn can be used to develop solutions to the earlier list of problems.

• Warner Losh - Tracking FreeBSD in a commercial Environment
  Source: BSDCan - The Technical BSD Conference
  Added: 25 May 2009
  Tags: bsdcan, bsdcan2009, presentation, freebsd, commercial environment, waner losh
  Paper (624 Kb, 45 pages), Slides (104 Kb, 10 pages)
  

  Tracking FreeBSD in a commercial Environment
  How to stay current while staying sane

  The FreeBSD project publishes two lines of source code: current and stable. All changes must first be committed to current and then are merged into stable. Commercial organizations wishing to use FreeBSD in their products must be aware of this policy. Four different strategies have developed for tracking FreeBSD over time. A company can choose to run only unmodified release versions of FreeBSD. A company may choose to import FreeBSD's sources once and then never merge newer versions. A company can choose to import each new stable branch as it is created, adding its own changes to that branch, as well as integrating new versions from FreeBSD from time to time. A company can track FreeBSD's current branch, adding to it their changes as well as newer FreeBSD changes. Which method a company chooses depends on the needs of the company. These methods are explored in detail, and their advantages and disadvantages are discussed. Tracking FreeBSD's ports and packages is not discussed.

  Companies building products based upon FreeBSD have many choices in how to use the projects sources and binaries. The choices range from using unmodified binaries from FreeBSD's releases, to tracking modify FreeBSD heavily and tracking FreeBSD's evolution in a merged tree. Some companies may only need to maintain a stable version of FreeBSD with more bug fixes or customizations than the FreeBSD project wishes to place in that branch. Some companies also wish to contribute some subset of their changes back to the FreeBSD project.

  FreeBSD provides an excellent base technology with which to base products. It is a proven leader in performance, reliability and scalability. The technology also offers a very business friendly license that allows companies to pick and choose which changes they wish to contribute to the community rather than forcing all changes to be contributed back, or attaching other undesirable license conditions to the code.

  However, the FreeBSD project does not focus on integration of its technology into customized commercial products. Instead, the project focuses on producing a good, reliable, fast and scalable operating system and associated packages. The project maintains two lines of development. A current branch, where the main development of the project takes place, and a stable branch which is managed for stability and reliability. While the project maintains documentation on the system, including its development model, relatively little guidance has been given to companies in how to integrate FreeBSD into their products with a minimum of trouble.

  Developing a sensible strategy to deal with both these portions of FreeBSD requires careful planning and analysis. FreeBSD's lack of guidelines to companies leaves it up to them to develop a strategy. FreeBSD's development model differs from some of the other Free and Open Source projects. People familiar with those systems often discover that methods that were well suited to them may not work as well with FreeBSD's development model. These two issues cause many companies to make poor decisions without understanding the problems that lie in their future.

  Very little formal guidance exists for companies wishing to integrate FreeBSD into their products. Some email threads can be located via a Google search that could help companies, but many of them are full of contradictory information, and it is very disorganized. While the information about the FreeBSD development process is in the FreeBSD handbook, the implications of that process for companies integrating FreeBSD into their products are not discussed.

• Kris Moore - PC-BSD - Making FreeBSD on the desktop a reality
  Source: BSDCan - The Technical BSD Conference
  Added: 25 May 2009
  Tags: bsdcan, bsdcan2009, presentation, pc-bsd, freebsd, kris moore
  Paper (351 Kb, 9 pages), Slides (512 Kb, 35 pages)
  

  PC-BSD - Making FreeBSD on the desktop a reality
  FreeBSD on the Desktop

  While FreeBSD is a all-around great operating system, it is greatly lagging behind in desktop appeal. Why is this? In this talk, we will take a look at some of the desktop drawbacks of FreeBSD, and how are are attempting to fix them through PC-BSD.

  FreeBSD has a reputation for its rock-solid reliability, and top-notch performance in the server world, but is noticeably absent when it comes to the vast market of desktop computing. Why is this? FreeBSD offers many, if not almost all of the same open-source packages and software that can be found in the more popular Linux desktop distributions, yet even with the speed and reliability FreeBSD offers, a relative few number of users are deploying it on their desktops.

  In this presentation we will take a look at some of the reasons why FreeBSD has not been as widely adopted in the desktop market as it has on the server side. Several of the desktop weaknesses of FreeBSD will be shown, along with how we are trying to fix these short-comings through a desktop-centric version of FreeBSD, known as PC-BSD. We will also take a look at the package management system employed by all open-source operating systems alike, and some of the pitfalls it brings, which may hinder widespread desktop adoption.

• Sean Bruno - Implementation of TARGET_MODE applications
  Source: BSDCan - The Technical BSD Conference
  Added: 25 May 2009
  Tags: bsdcan, bsdcan2009, presentation, freebsd, firewire, sean bruno
  Slides (72 Kb, 22 pages)
  

  Implementation of TARGET_MODE applications
  How we used TARGET_MODE in the kernel to create and interesting product

  This presentation will cover a real world implementation of the TARGET_MODE infrastructure in the kernel (stable/6). Topics to include: drivers used (isp, aic7xxx, firewire). scsi_target userland code vs kernel drivers missing drivers (4/8G isp support, iSCSI target)

  Target Mode describes a feature within certain drivers that allows a FreeBSD system to emulate a Target in the SCSI sense of the word. By recompiling your kernel with this feature enabled, it permits one to turn a FreeBSD system into an external hard disk. This feature of the FreeBSD kernel provides many interesting implementations and is highly desirable to many organizations whom run FreeBSD as their platform.

  I have been tasked with the maintenance of a proprietary target driver that interfaces with the FreeBSD kernel to do offsite data mirroring at the block level. This talk will discuss the implementation of that kernel mode driver and the process my employer went through to implement a robust and flexible appliance.

  Since I took over the implementation, we have implemented U160 SCSI(via aic7xxx), 2G Fibre Channel(via isp) and Firewire 400 (via sbp_targ). Each driver has it's own subtleties and requirements. I personally enhanced the existing Firewire target driver and was able to get some interesting results.

  I hope to demonstrate a functional Firewire 400/800 target and show how useful this application can be for the embedded space. Also, I wish to demonstrate the need for iSCSI. USB and 4/8G Fibre Channel target implementations that use the TARGET_MODE infrastructure that is currently in place to allow others to expand their various interface types.

  The presentation should consist of a high level overview, followed by detailed implementation instructions with regards to the Firewire implementation and finish up with a hands-on demonstration with a FreeBSD PC flipped into TARGET_MODE and a Mac.

• George Neville-Neil - Understanding and Tuning SCHED_ULE
  Source: BSDCan - The Technical BSD Conference
  Added: 25 May 2009
  Tags: bsdcan, bsdcan2009, presentation, freebsd, sched_ule, george neville-neil
  Slides (228 Kb, 29 pages)
  

  Understanding and Tuning SCHED_ULE

  With the advent of widespread SMP and multicore CPU architectures it was necessary to implement a new scheduler in the FreeBSD operating system. The SCHEDULE scheduler was added for the 5 series of FreeBSD releases and has now matured to the point where it is the default scheduler in the 7.1 release. While scheduling processes was a difficult enough task in the uniprocessor world, moving to multiple processors, and multiple cores, has significantly increased the number of problems that await engineers who wish to squeeze every last ounce of performance out of their system. This talk will cover the basic design of SCHEDULE and focus a great deal of attention on how to tune the scheduler for different workloads, using the sysctl interfaces that have been provided for that purpose.

  Understanding and tuning a scheduler used to be done only by operating systems designers and perhaps a small minority of engineers focusing on esoteric high performance systems. With the advent of widespread multi-processor and multi-core architectures it has become necessary for more users and administrators to decide how to tune their systems for the best performance. The SCHEDULE scheduler in FreeBSD provides a set of sysctl interfaces for tuning the scheduler at run time, but in order to use these interfaces effectively the scheduling process must first be understood. This presentation will give an overview of how SCHEDULE works and then will show several examples of tuning the system with the interfaces provided.

  The goal of modifying the scheduler's parameters is to change the overall performance of programs on the system. One of the first problems presented to the person who wants to tune the scheduler is how to measure the effects of their changes. Simply tweaking the parameters and hoping that that will help is not going to lead to good results. In our recent experiments we have used the top(1) program to measure our results.

• Lawrence Stewart - Improving the FreeBSD TCP Implementation
  Source: BSDCan - The Technical BSD Conference
  Added: 25 May 2009
  Tags: bsdcan, bsdcan2009, presentation, freebsd, tcp, lawrence stewart
  Slides (2.1 Mb, 38 pages)
  

  Improving the FreeBSD TCP Implementation.
  An update on all things TCP in FreeBSD and how they affect you.

  My involvement in improving the FreeBSD TCP stack has continued this past year, with much of the work targeted at FreeBSD 8. This talk will cover what these changes entail, why they are of interest to the FreeBSD community and how they help to improve our TCP implementation.

  It has been a busy year since attending my inaugural BSDCan in 2008, where I talked about some of my work with TCP in FreeBSD.

  I have continued the work on TCP analysis/debugging tools and integrating modular congestion control into FreeBSD as part of the NewTCP research project. I will provide a progress update on this work.

  Additionally, a grant win from the FreeBSD Foundation to undertake a project titled "Improving the FreeBSD TCP Implementation" at Swinburne University's Centre for Advanced Internet Architectures has been progressing well. The project focuses on bringing TCP Appropriate Byte Counting (RFC 3465), reassembly queue auto-tuning and integration of low-level analysis/debugging tools to the base system, all of which I will also discuss.

• Ivan Voras - Remote and mass management of systems with finstall
  Source: BSDCan - The Technical BSD Conference
  Added: 25 May 2009
  Tags: bsdcan, bsdcan2009, presentation, finstall, management, freebsd, ivan voras
  Slides (377 Kb, 24 pages)
  

  Remote and mass management of systems with finstall
  Automated management on a largish scale

  An important part of the "finstall" project, created as a graphical installer for FreeBSD, is a configuration server that can be used to remotely administer and configure arbitrary systems. It allows for remote scripting of administration tasks and is flexible enough to support complete reconfiguration of running systems.

  The finstall project has two major parts - the front-end and the back-end. The front-end is just a GUI allowing the users to install the system in a convenient way. The back-end is a network-enabled XML-RPC server that is used by the front-end to perform its tasks. It can be used as a stand-alone configuration daemon. This talk will describe a way to make use of this property of finstall to remotely manage large groups of systems.

• Mike Silbersack - Detecting TCP regressions with tcpdiff
  Source: BSDCan - The Technical BSD Conference
  Added: 25 May 2009
  Tags: bsdcan, bsdcan2009, presentation, tcpdiff, freebsd, mike silbersack
  Slides (89 Kb, 33 pages)
  

  Detecting TCP regressions with tcpdiff

  Determining if a TCP stack is working correctly is hard. The tcpdiff project aims for a simpler goal: To automatically detect differences in TCP behavior between different versions of an operating system and display those differences in an easy to understand format. The value judgement of whether a certain change between version X and Y of a TCP stack is good or bad will be left to human eyes.

  Determining if a TCP stack is working correctly is hard. The tcpdiff project aims for a simpler goal: To automatically detect differences in TCP behavior between different versions of an operating system and display those differences in an easy to understand format. The value judgement of whether a certain change between version X and Y of a TCP stack is good or bad will be left to human eyes.

  The initial version of tcpdiff presented at NYCBSDCon 2008 demonstrated that it could be used to detect at least two major TCP bugs that were introduced into FreeBSD in the past few years. The work from that presentation can be viewed at http://www.silby.com/nycbsdcon08/.

  For BSDCan 2009, I hope to fix a number of bugs in tcpdiff, make it easier to use, set up nightly tests of FreeBSD, and improve it so that additional known bugs can be detected. Additionally, I plan to run it on OSes other than FreeBSD.

• Philip Paeps - Crypto Acceleration on FreeBSD
  Source: BSDCan - The Technical BSD Conference
  Added: 25 May 2009
  Tags: bsdcan, bsdcan2009, presentation, crypto acceleration, freebsd, philip paeps
  Slides (361 Kb, 28 pages)
  

  Crypto Acceleration on FreeBSD

  As more and more services on the internet become cryptographically secured, the load of cryptography on systems becomes heavier and heavier. Crypto acceleration hardware is available in different forms for different workloads. Embedded communications processors from VIA and AMD have limited acceleration facilities in silicon and various manufacturers build hardware for accelerating secure web traffic and IPSEC VPN tunnels.

  This talk gives an overview of FreeBSD's crypto framework in the kernel and how it can be used together with OpenSSL to leverage acceleration hardware. Some numbers will be presented to demonstrate how acceleration can improve performance - and how it can curiously bring a system to a grinding halt.

  Philip originally started playing with crypto acceleration when he saw the "crypto block" in one of his Soekris boards. As usual, addiction was instant and by the grace of the "you touch it, you own it" principle, he has been fiddling the crypto framework more than is good for him.

• Scott Ullrich, Chris Buechler - pfSense Tutorial
  Source: BSDCan - The Technical BSD Conference
  Added: 28 May 2008
  Tags: bsdcan, bsdcan2008, tutorial, freebsd, pfsense, scott ullrich, chris buechler
  PDF file (4.1 Kb, 91 pages)
  

  pfSense Tutorial

  From Zero to Hero with pfSense

  pfSense is a free, open source customized distribution of FreeBSD tailored for use as a firewall and router. In addition to being a powerful, flexible firewalling and routing platform, it includes a long list of related features and a package system allowing further expandability without adding bloat and potential security vulnerabilities to the base distribution. pfSense is a popular project with more than 1 million downloads since its inception, and proven in countless installations ranging from small home networks protecting a PC and an Xbox to large corporations, universities and other organizations protecting thousands of network devices.

  This tutorial is being presented by the founders of the pfSense project, Chris Buechler and Scott Ullrich.

  The session will start with an introduction to the project, hardware sizing and selection, installation, firewalling concepts and basic configuration, and continue to cover all the most popular features of the system. Common usage scenarios, deployment considerations, step by step configuration guidance, and best practices will be covered for each feature. Most configurations will be demonstrated in a live lab environment.

  Attendees are assumed to have basic knowledge of TCP/IP and firewalling concepts, however no in-depth knowledge in these areas or prior knowledge of pfSense or FreeBSD is necessary.

• Bjoern A. Zeeb - BSDCan08 devsummit summary
  Source: BSDCan - The Technical BSD Conference
  Added: 28 May 2008
  Tags: bsdcan, bsdcan2008, devsummit, devsummit2008, freebsd, writeup, bjoern a zeeb
  

  200805DevSummit - BSDCan 2008 FreeBSD Developer summit summary

• Rafal Jaworowski - FreeBSD Embedded Report
  Source: BSDCan - The Technical BSD Conference
  Added: 26 May 2008
  Tags: bsdcan, bsdcan2008, devsummit, devsummit2008, freebsd, embedded, rafal jaworowski
  PDF file (58 Kb, 6 pages)
  

  FreeBSD Embedded Report

• Robert Watson - TCP SMP Scalability
  Source: BSDCan - The Technical BSD Conference
  Added: 26 May 2008
  Tags: bsdcan, bsdcan2008, devsummit, devsummit2008, freebsd, smp, robert watson
  PDF file (70 Kb, 8 pages)
  

  TCP SMP Scalability

• Erwin Lansing - What's happening in the world of ports and portmgr
  Source: BSDCan - The Technical BSD Conference
  Added: 24 May 2008
  Tags: bsdcan, bsdcan2008, devsummit, devsummit2008, freebsd, portmgr, erwin lansing
  PDF file (146 Kb, 14 pages)
  

  What's happening in the world of ports and portmgr

• Warner Losh - FreeBSD/mips
  Source: BSDCan - The Technical BSD Conference
  Added: 26 May 2008
  Tags: bsdcan, bsdcan2008, slides, freebsd, mips, embedded, warner losh
  PDF file (1.3 Mb, 19 pages)
  

  FreeBSD/mips

  Embedding FreeBSD

  FreeBSD now runs on the MIPS platform. FreeBSD/mips supports MIPS-32 and MIPS-64 targets, including SMP for multicore support.

  FreeBSD/mips is targeted at the embedded MIPS marketplace. FreeBSD has run on the MIPS platform for many years. Juniper ported FreeBSD to the Mips platform in the late 1990's. However, concern about intellectual property issues kept Juniper from contributing the port back to FreeBSD until recently. The contributed port was a 64-bit mips port.

  In the mean time, many efforts were made to bring FreeBSD to the mips platform. The first substantial effort to bring FreeBSD to the Mips platform was done by Juli Mallet. This effort made it to single user, but never further than that. This effort was abandoned due to a change in Juli's life. The port languished.

  Two years ago at BSDcan, as my involvement with FreeBSD/arm was growing, I tried to rally the troops into doing a FreeBSD/mips port. My efforts resulted in what has been commonly called the "mips2" effort. The name comes from the choice of //depot/projects/mips2 to host the work in perforce. A number of people worked on the earliest versions of the port, but it too languished and seemed destined to suffer the same fate as earlier efforts. Then, two individuals stood up and started working on the port. Wojciech A. Koszek and Oleksandr Tymoshenko pulled in code from the prior efforts. Through their efforts of stabilizing this code, the port to the single user stage and ported it to three different platforms. Others ported it to a few more. Snapshots of this work were released from time to time.

  Cavium Networks picked up one of these snapshots and ported it to their multicore mips64 network processor. Cavium has kindly donated much of their work to the comminuty.

  In December, I started at Cisco systems. My first job was to merge all the divergent variants of FreeBSD/mips and get it into shape to push into the tree. With luck, this should be in the tree before I give my talk.

  In parallel to this, other advances in the embedded support for FreeBSD have been happening as well. I'll talk about new device drivers, new subsystems, and new build tools that help to support the embedded developer.

• Ivan Voras - "finstall" - the new FreeBSD installer
  Source: BSDCan - The Technical BSD Conference
  Added: 26 May 2008
  Tags: bsdcan, bsdcan2008, slides, freebsd, installer, ivan voras
  PDF file (1.1 Mb, 39 pages)
  

  "finstall" - the new FreeBSD installer

  A graphical installer for FreeBSD

  The "finstall" project, sponsored by Google as a Summer of Code 2007 project, is an attempt to create a user-friendly graphical installer for FreeBSD, with enough strong technical features to appeal to the more professional users. A long term goal for it is to be a replacement for sysinstall, and as such should support almost all of the features present in sysinstall, as well as add support for new FreeBSD features such as GEOM, ZFS, etc. This talk will describe the architecture of "finstall" and focus on its lesser known features such as remote installation.

  "finstall" is funded by Google SoC as a possible long-term replacement for sysinstall, as a "LiveCD" with the whole FreeBSD base system on the CD, with X11 and XFCE4 GUI. In the talk I intend to describe what I did so far, and what are the future plans for it. This includes the installer GUI, the backend (which has the potential to become a generic FreeBSD configuration backend) and the assorted tools developed for finstall ("LiveCD" creation scripts). More information on finstall can be found here: http://wiki.freebsd.org/finstall.

• Pawel Jakub Dawidek - A closer look at the ZFS file system
  Source: BSDCan - The Technical BSD Conference
  Added: 21 May 2008
  Tags: bsdcan, bsdcan2008, slides, zfs, freebsd, pawel jakub dawidek
  PDF file (150 Kb, 33 pages)
  

  A closer look at the ZFS file system

  simple administration, transactional semantics, end-to-end data integrity

  SUN's ZFS file system became part of FreeBSD on 6th April 2007. ZFS is a new kind of file system that provides simple administration, transactional semantics, end-to-end data integrity, and immense scalability. ZFS is not an incremental improvement to existing technology; it is a fundamentally new approach to data management. We've blown away 20 years of obsolete assumptions, eliminated complexity at the source, and created a storage system that's actually a pleasure to use.

  ZFS presents a pooled storage model that completely eliminates the concept of volumes and the associated problems of partitions, provisioning, wasted bandwidth and stranded storage. Thousands of file systems can draw from a common storage pool, each one consuming only as much space as it actually needs. The combined I/O bandwidth of all devices in the pool is available to all filesystems at all times.

  All operations are copy-on-write transactions, so the on-disk state is always valid. There is no need to fsck(1M) a ZFS file system, ever. Every block is checksummed to prevent silent data corruption, and the data is self-healing in replicated (mirrored or RAID) configurations. If one copy is damaged, ZFS detects it and uses another copy to repair it.

• Rafal Jaworowski - Interfacing embedded FreeBSD with U-Boot
  Source: BSDCan - The Technical BSD Conference
  Added: 21 May 2008
  Tags: bsdcan, bsdcan2008, slides, embedded, freebsd, u-boot, rafal jaworowski
  PDF file (300 Kb, 26 pages)
  

  Interfacing embedded FreeBSD with U-Boot

  Working with the de facto standard for an initial level boot loader

  In the embedded world U-Boot is a de facto standard for an initial level boot loader (firmware). It runs on a great number of platforms and architectures, and is open source.

  This talk covers the development work on integrating FreeBSD with U-Boot-based systems. Starting with an overview of differences between booting an all-purpose desktop computer vs. embedded system, FreeBSD booting concepts are explained along with requirements for the underlying firmware.

  Historical attempts to interface FreeBSD with this firmware are mentioned and explanation given on why they failed or proved incomplete. Finally, the recently developed approach to integrate FreeBSD and U-Boot is presented, with implementation details and particular attention on how it's been made architecture and platform independent, and how loader(8) has been bound to it.

• John Baldwin - Introduction to Debugging the FreeBSD Kernel
  Source: BSDCan - The Technical BSD Conference
  Added: 21 May 2008
  Tags: bsdcan, bsdcan2008, slides, paper, debugging, freebsd, john baldwin
  paper, PDF file (121 Kb, 15 pages), slides, PDF file (113 Kb, 26 pages)
  

  Introduction to Debugging the FreeBSD Kernel

  Just like every other piece of software, the FreeBSD kernel has bugs. Debugging a kernel is a bit different from debugging a userland program as there is nothing underneath the kernel to provide debugging facilities such as ptrace() or procfs. This paper will give a brief overview of some of the tools available for investigating bugs in the FreeBSD kernel. It will cover the in-kernel debugger DDB and the external debugger kgdb which is used to perform post-mortem analysis on kernel crash dumps.

  Introduction to Debugging the FreeBSD Kernel

  • Basic crash messages, what a crash looks like
    • typical panic() invocation
    • page fault example
  • "live" debugging with DDB
    • stack traces
    • ps
    • deadlock examples
    • show lockchain
    • show sleepchain
    • Adding new DDB commands
  • KGDB
    • inspecting processes and threads
    • working with kernel modules
    • using scripts to extend
  • examining crashdumps using utilities
    • ps, netstat, etc.
  • debugging strategies
    • kernel crashes
    • system hangs

• John Birrell - DTrace for FreeBSD
  Source: BSDCan - The Technical BSD Conference
  Added: 21 May 2008
  Tags: bsdcan, bsdcan2008, slides, dtrace, freebsd, john birrell
  PDF file (148 Kb, 49 pages)
  

  DTrace for FreeBSD

  What on earth is that system doing?!

  DTrace is a comprehensive dynamic tracing facility originally developed for Solaris that can be used by administrators and developers on live production systems to examine the behavior of both user programs and of the operating system itself. DTrace enables users to explore their system to understand how it works, track down performance problems across many layers of software, or locate the cause of aberrant behavior. DTrace lets users create their own custom programs to dynamically instrument the system and provide immediate, concise answers to arbitrary questions you can formulate using the DTrace D programming language.

  This talk discusses the port of the DTrace facility to FreeBSD and demonstrates examples on a live FreeBSD system.

  • Introduction to the D language - probes, predicates and actions.
  • dtrace(8) and libdtrace - the userland side of the DTrace story.
  • The DTrace kernel module, it's ioctl interface to userland and the provider infrastructure in the kernel.
  • DTrace kernel hooks and the problem of code licensed under Sun's CDDL.
  • What does a DTrace probe actually do?
  • DTrace safety and how it is implemented.
  • Build system changes to add CTF (Compact C Type Format) data to objects, shared libraries and executables.
  • The DTrace test suite.
  • A brief list of things to do to port the DTrace facility to other BSD-derived operating systems.

• Randall Stewart - SCTP what it is and how to use it
  Source: BSDCan - The Technical BSD Conference
  Added: 21 May 2008
  Tags: bsdcan, bsdcan2008, abstract, freebsd, sctp, randall stewart
  PDF file (130 Kb, 10 pages)
  

  SCTP - SCTP what it is and how to use it

  This talk will introduce the attendee into the interesting world of SCTP.

  We will first discuss the new and different features that SCTP (a new transport in FreeBSD 7.0) provide to the user. Then we will shift gears and discuss the extended socket API that is available to SCTP users and will cover such items as:

  • The two socket programming models
  • Extended system calls that support the SCTP feature set.
  • What model may fit you best

• Rafal Jaworowski - Porting FreeBSD/ARM to Marvell Orion System-On-Chip
  Source: BSDCan - The Technical BSD Conference
  Added: 21 May 2008
  Tags: bsdcan, bsdcan2008, slides, freebsd, arm, marvell orion, rafal jaworowski
  PDF file (193 Kb, 25 pages)
  

  Porting FreeBSD/ARM to Marvell Orion System-On-Chip

  This talk covers the development work on porting the FreeBSD/ARM to Marvell Orion family of highly integrated chips.

  ARM architecture is widely adopted in the embedded devices, and since the architecture can be licensed, many implementation variations exist: Orion is a derivative compliant with the ARMv5TE definition, it provides a rich set of on-chip peripherals.

  Present state of the FreeBSD support for ARM is explained, areas for improvement highlighted and its overall shape and condition presented.

  The main discussion covers scope of the Orion port (what integrated peripherals required new development, what was adapted from existing code base); design decisions are explained for the most critical items, and implementation details revealed.

  Summary notes are given on general porting methodology, debugging techniques and difficulties encountered during such undertaking.

• The FreeBSD Security Officer function
  Source: BSDCan - The Technical BSD Conference
  Added: 20 May 2007
  Tags: bsdcan, bsdcan2007, pdf, freebsd, security officer, simon l nielsen
  PDF version (252 Kb, 29 pages)
  

  "FreeBSD Security Officer function" at BSDCAN 2007 by Simon L. Nielsen (FreeBSD Deputy Security Officer)

• FreeBSD Portsnap
  Source: BSDCan - The Technical BSD Conference
  Added: 20 May 2007
  Tags: bsdcan, bsdcan2007, pdf, portsnap, freebsd, colin percival
  PDF version (1.3 Mb, 88 pages)
  

  "FreeBSD Portsnap - What (it is), Why (it was written), and How (it works)" by Colin Percival (cperciva@FreeBSD.org)
  > (Note: use ^L to get back in non-fullscreen mode)

• BSDConTR 2007 - Presentations
  Source: BSDConTR - Turkish Conference on BSD Systems
  Added: 31 October 2007
  Tags: bsdcontr, bsdcontr2007, pdf, freebsd 7.0, freebsd, kris kennaway
  PDF version (336 Kb, 37 pages)
  

  Introducing FreeBSD 7.0

• Server deployment in mass-hosting environment using FreeBSD Ports system by Stanislav Sedov (in russian)
  Source: Hostobzor, the Russian conference of hosting provider
  Added: 24 November 2008
  Tags: hostobzor, hostobzor12, freebsd, ports, stanislav sedov, russian
  PDF version (470 Kb, 30 pages), PDF version (61 Kb, 5 pages)
  

  Recently I have been attending Hostobzor 12th, the Russian conference of hosting providers, beeing held at Raivola hotel near St. Petersburg. The event was great as always thanks to organizers. There was a number of intersting talks given, a lot of interesting discussions held, and, what I appreciate better, a lot of new people with great ideas met.

  I gave a talk on using the FreeBSD Ports system to mange a large-scale virtual hosting installations based on Hosting Telesystems experience. I tried to describe in detail how we use the ports collection to deploy a large number of servers diverced by architecture and OS versions, how we build packages and distribute them among servers, talked about how we use Mercurial VCS to incrementally merge upstream changes into our modified ports collection and FreeBSD src trees. Hopefully, I've not screwed it much... At least, some people was interested a lot and asked interesting questions.

• Welcome - Cambridge University FreeBSD DevSummit - Robert Watson
  Source: FreeBSD Developer Summit - Cambridge
  Added: 25 August 2008
  Tags: devsummit2008, devsummit, pdf, freebsd, robert watson
  PDF version (264 Kb, 12 pages)
  

  Welcome by Robert Watson

• variant Symlinks - Brooks Davis
  Source: FreeBSD Developer Summit - Cambridge
  Added: 25 August 2008
  Tags: devsummit2008, devsummit, pdf, freebsd, variant symlinks, brooks davis
  PDF version (213 Kb, 15 pages)
  

  Variant Symlinks by Brooks Davis

• Van FreeBSD Documentatie projectleider tot FreeBSD Developer - Remko Lodder
  Source: Nederlandse Linux Gebruikers Group
  Added: 31 December 2008
  Tags: nllgg, freebsd, documentation, nederlands, remko lodder
  PDF version (594 Kb, 24 pages)
  

  In 2004 ben ik begonnen met het FreeBSD Dutch Documentation Project, een project dat inmiddels bijna het complete handboek vertaald heeft. Sinds die tijd zijn er vele wegen geweest die ik behandeld heb, van documentatie projectleider naar Security Team-lid tot aan FreeBSD Developer.

  Remko Lodder is momenteel 25 jaar en werkt als Unix Engineer voor het bedrijf Snow B.V. waar hij zich momenteel met name bezig houd met security (firewalls etc). Hij is sinds 2004 lid van het FreeBSD Development team en is momenteel 1 van de meest actieve developers binnen het team.

• FreeBSD Google Summer of Code posters
  Source: FreeBSD Google Summer of Code
  Added: 22 March 2009
  Tags: freebsd, google, summer of code
  PDF version (815 Kb, 1 page), PNG version (1.1 Mb, 2480 x 3507 pixels)
  

  Two posters usable for the announcement of the participation of the FreeBSD Project in the Google Summer of Code.

• PmcTools talk at the Bangalore chapter of the ACM
  Source: Joseph Koshy
  Added: 24 May 2009
  Tags: freebsd, presentation, freebsd, pmctools, joseph koshy
  PDF version (550 Kb, 48 pages)
  

  In April 2009 I was invited to speak on FreeBSD/PmcTools by the Bangalore chapter of the ACM.

  This was an overview talk. The talk briefly touched upon: the motivations and goals of the project, the programming APIs, some aspects of the implementation and on possible future work.