[e2e] Logging active TCP details in FreeBSD 5, 6 and 7

All,

On the off chance this is of general interest, I'd like to let people know of a FreeBSD kernel module we've developed for logging various TCP state variables in a running kernel while sessions are active.

Called SIFTR ("sifter"), we built this for our own research into precisely how a FreeBSD TCP stack behaves when faced with real and artificial (e.g. dummynet) paths. Figured it might also be of interest to others.

See http://caia.swin.edu.au/urp/newtcp/tools.html (under SIFTR) for a readme, changelog and tarball. The authors would love to get feedback from anyone trying it out. (SIFTR has been developed and tested mostly under FreeBSD 6.2, but we believe it'll be stable under 5.x and 7.x too.)

cheers,
gja Received on Fri Sep 7 03:16:08 2007