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 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/Received on Sun Jun 13 2010 - 06:12:03 UTC
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