* Mike Galbraith <[email protected]> wrote:
> > It doesn't make much of a difference.
>
> I thought this was history. With your config, I was finally able to
> reproduce the anomaly (only with your proggy though), and Ingo's patch
> does indeed fix it here.
>
> Freshly reproduced anomaly and patch verification, running 2.6.23-rc3
> with your config, both with and without Ingo's patch reverted:
>
> 6561 root 20 0 1696 492 404 S 32.0 0.0 0:30.83 0 lt
> 6562 root 20 0 1696 336 248 R 32.0 0.0 0:30.79 0 lt
> 6563 root 20 0 1696 336 248 R 32.0 0.0 0:30.80 0 lt
> 6564 root 20 0 2888 1236 1028 R 4.6 0.1 0:05.26 0 sh
>
> 6507 root 20 0 2888 1236 1028 R 25.8 0.1 0:30.75 0 sh
> 6504 root 20 0 1696 492 404 R 24.4 0.0 0:29.26 0 lt
> 6505 root 20 0 1696 336 248 R 24.4 0.0 0:29.26 0 lt
> 6506 root 20 0 1696 336 248 R 24.4 0.0 0:29.25 0 lt
oh, great! I'm glad we didnt discard this as a pure sched_clock
resolution artifact.
Roman, a quick & easy request: please send the usual cfs-debug-info.sh
output captured while your testcase is running. (Preferably try .23-rc3
or later as Mike did, which has the most recent scheduler code, it
includes the patch i sent to you already.) I'll reply to your
sleeper-fairness questions separately, but in any case we need to figure
out what's happening on your box - if you can still reproduce it with
.23-rc3. Thanks,
Ingo
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