low(er) disk performance with sched_4bsd then with sched_ule
joseph.koshy at gmail.com
Sat Sep 17 19:05:19 PDT 2005
> I don't know the disk codepath very well, but the samples look
> little suspect.
They do look odd. For one, there are entries for the p4_*_pmc
functions which would never get called on a P-III box.
Oliver, after you sync'ed up with RELENG_6, did you keep the
sources for pmcstat(8) sync'ed with current? If not, that
would explain the skewed profile. Yesterday I MFC'ed a
few bug fixes so could you run the last step (pmcstat -g -R
/path-to-sample-file) with today's pmcstat(8)? The file
"src/usr.sbin/pmcstat_log.c" should be at rev 22.214.171.124.
FreeBSD Volunteer, http://people.freebsd.org/~jkoshy
More information about the freebsd-current