Re: BFS vs. mainline scheduler benchmarks and measurements

From: Jens Axboe
Date: Thu Sep 10 2009 - 06:09:52 EST


On Thu, Sep 10 2009, Ingo Molnar wrote:
>
> * Jens Axboe <jens.axboe@xxxxxxxxxx> wrote:
>
> > I went to try -tip btw, but it crashes on boot. Here's the
> > backtrace, typed manually, it's crashing in
> > queue_work_on+0x28/0x60.
> >
> > Call Trace:
> > queue_work
> > schedule_work
> > clocksource_mark_unstable
> > mark_tsc_unstable
> > check_tsc_sync_source
> > native_cpu_up
> > relay_hotcpu_callback
> > do_forK_idle
> > _cpu_up
> > cpu_up
> > kernel_init
> > kernel_thread_helper
>
> hm, that looks like an old bug i fixed days ago via:
>
> 00a3273: Revert "x86: Make tsc=reliable override boot time stability checks"
>
> Have you tested tip:master - do you still know which sha1?

It was -tip pulled this morning, 2-3 hours ago. I don't have the sha
anymore, but it was a fresh pull today.

--
Jens Axboe

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