Messages in this thread |  | | Subject | Re: [PATCH] BUG(): sched.c: Line 944 | From | Robert Love <> | Date | 17 Sep 2002 16:06:34 -0400 |
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On Tue, 2002-09-17 at 15:54, Steven Cole wrote:
Thank you for the testing, Steven.
> Running dbench 3 resulted in the dbench clients hanging and being > unkillable with kill -9 in the D state.
Hrm, I cannot reproduce this. I just successfully completed a `dbench 16'. Can you find where they are hanging? You can get a trace via sysrq. You can also see where they are in the kernel via the wchan field of ps: "ps -ewo user,pid,priority,%cpu,stat,command,wchan" is a favorite of mine.
Sure it does not happen with a stock kernel (no preempt)?
What if you replace the printk() and dump_stack() in schedule() with a no-op (but not something that will optimize away the conditional, i.e. try a cpu_relax()).
Oh, is the previous patch fully backed out? None of that do_exit muck anymore, right?
> Test box is 2-way pIII, kernel SMP.
I too am SMP with kernel preemption, dual Athlon MP.
Regards,
Robert Love
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