Date: Tue, 15 Jan 2008 09:03:09 +0000 (UTC) From: Jeff Roberson <jeff@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/kern sched_ule.c Message-ID: <200801150903.m0F939eP079036@repoman.freebsd.org>
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jeff 2008-01-15 09:03:09 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- When executing the 'tryself' branch in sched_pickcpu() look at the
lowest priority on the queue for the current cpu vs curthread's
priority. In the case that curthread is waking up many threads of a
lower priority as would happen with a turnstile_broadcast() or wakeup()
of many threads this prevents them from all ending up on the current cpu.
- In sched_add() make the relationship between a scheduled ithread and
the current cpu advisory rather than strict. Only give the ithread
affinity for the current cpu if it's actually being scheduled from
a hardware interrupt. This prevents it from migrating when it simply
blocks on a lock.
Sponsored by: Nokia
Revision Changes Path
1.222 +5 -4 src/sys/kern/sched_ule.c
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