Well, first off, here are some kdumps on this: http://www.apache.org/~jerenkrantz/freebsd/
ktrace.dump.abs.gz - kdump'd output with absolute timestamps ktrace.dump.rel.gz - kdump'd output with relative timestamps ktrace.out.gz - raw ktrace file One thing I noticed is that shutdown(2) looks very expensive. This is definitely something that was changed in the 2.0.29 cycle when rbb pulled out all of the MPM/lingering close code. I captured the entire process group. I imagine you can do some awk/grep magic with the absolute timestamped version to get relative syscall times for each process. Perhaps Brian or someone else can do some analysis with this. I'm out of time for tonight. Hopefully, these data sets can be of help. HTH. -- justin
