7.0-stable: a hung process - scheduler bug?
jhb at freebsd.org
Tue Sep 23 20:19:49 UTC 2008
On Tuesday 23 September 2008 02:25:05 pm Paul B. Mahol wrote:
> > The OS is: FreeBSD 7.0-STABLE/amd64 from Sat Jul 26, 2008 and the box is
> > otherwise perfectly functional. The scheduling-related options are set
> > as such:
> > options SCHED_4BSD # 4BSD scheduler
> > options _KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B
> > real-time extensions
> > Let me know, what else I can do to help fix this bug -- I'm going to
> > reboot the machine tonight... Should I switch to SCHED_ULE as a
> > work-around?
> SCHED_BSD4 is suboptimal for 4 CPUs, and it is replaced with SCHED_ULE
> on 7 STABLE.
SCHED_4BSD should still work fine.
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