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SubjectRe: BFS vs. mainline scheduler benchmarks and measurements

* Jens Axboe <jens.axboe@oracle.com> 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?

Ingo


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