Date: Tue, 23 Sep 2008 16:16:13 -0400 From: John Baldwin <jhb@freebsd.org> To: freebsd-stable@freebsd.org Cc: Mikhail Teterin <mi+mill@aldan.algebra.com>, stable@freebsd.org, "Paul B. Mahol" <onemda@gmail.com> Subject: Re: 7.0-stable: a hung process - scheduler bug? Message-ID: <200809231616.14039.jhb@freebsd.org> In-Reply-To: <3a142e750809231125o579445baufb5f2676e4d9a2ca@mail.gmail.com> References: <48D92589.8000200@aldan.algebra.com> <3a142e750809231125o579445baufb5f2676e4d9a2ca@mail.gmail.com>
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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. -- John Baldwin
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