Date: Sat, 19 Jun 2010 13:27:30 +1000 From: Lawrence Stewart <lstewart@freebsd.org> To: freebsd-current@freebsd.org Subject: Re: [CFT] SIFTR - Statistical Information For TCP Research: Uncle Lawrence needs YOU! Message-ID: <4C1C3922.2050102@freebsd.org> In-Reply-To: <4C1492D0.6020704@freebsd.org> References: <4C1492D0.6020704@freebsd.org>
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Amount of feedback received thus far: nichts, nil, nada *sings "I'm so ronery" in his best Kim Jong-il voice* [4] Just like Uncle Sam [5], Uncle Lawrence needs you too - yes, I'm pointing at YOU! More specifically, people out there running current with 10-15 mins to spare for some testing, please read on. On 06/13/10 18:12, Lawrence Stewart wrote: > Hi all, > > The time has come to solicit some external testing for my SIFTR tool. > I'm hoping to commit it within a week or so unless problems are discovered. > > SIFTR is a kernel module that logs a range of statistics on active TCP > connections to a log file. It provides the ability to make highly > granular measurements of TCP connection state, aimed at system > administrators, developers and researchers. You can use the data to find > bugs in the stack, understand why connections are performing badly and > test new code to name a few uses. > > Development has been made possible in part by grants from the Cisco > University Research Program Fund at Community Foundation Silicon Valley, > and the FreeBSD Foundation. Bringing it into FreeBSD proper is being > carried out under the auspices of the "Enhancing the FreeBSD TCP > Implementation" FreeBSD Foundation project. More details are available > at [1,2,3]. > > If you can help out, please read on! > > Before continuing, make sure you're running with at least svn revision > 209119 (my commit to <sys/pcpu.h>), or you can manually apply the > r209119 diff to to your earlier rev source tree. > > The SIFTR patch is here: > > http://people.freebsd.org/~lstewart/patches/tcp_ffcaia2008/siftr_9.x.r209119.patch An updated version of the patch against svn head revision 209325 is available from: http://people.freebsd.org/~lstewart/patches/tcp_ffcaia2008/siftr_9.x.r209325.patch There was a backwards incompatible change in the external DPCPU_SUM() macro in <sys/pcpu.h> in r209325 of head so SIFTR also had to be updated. Please adapt the following instructions as appropriate based on the patch version you're testing. > Copy it to the root of your source tree and run the following: > > patch -p1 < siftr_9.x.r209119.patch > > It's a loadable kernel module so you can build it for testing like so: > > cd <path/to/src>/sys/modules/siftr > make > kldload ./siftr.ko > (don't forget to "make cleandir" to remove cruft when finished testing) > > After applying the patch, you can read the man page by running: > > man -M <path/to/src>/share/man siftr > > If I've done a decent job, all the info you need to understand what it > does and how to use it should be in the man page. > > I'm interested in all feedback and reports of success/failure, along > with details of the architecture tested and number of CPUs if you would > be so kind. > > That should be enough to get the ball rolling. Thanks and I look forward > to hearing from you! > > Cheers, > Lawrence > > [1] http://caia.swin.edu.au/freebsd/etcp09/ > > [2] http://www.freebsdfoundation.org/projects.shtml#Swinburne > > [3] http://caia.swin.edu.au/urp/newtcp/ [4] http://www.youtube.com/watch?v=xh_9QhRzJEs (language warning) [5] http://www.sonofthesouth.net/uncle-sam/images/uncle-sam-wants-you.jpg
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