Re: [patch] CFS scheduler, -v12

Peter Williams
2007-05-30T02:18:36Z

Siddha, Suresh B wrote:
> On Tue, May 29, 2007 at 04:54:29PM -0700, Peter Williams wrote:
>>> I tried with various refresh rates of top too.. Do you see the issue
>>> at runlevel 3 too?
>> I haven't tried that.
>>
>> Do your spinners ever relinquish the CPU voluntarily?
>
> Nope. Simple and plain while(1); 's
>
> I can try 32-bit kernel to check.

Don't bother. I just checked 2.6.22-rc3 and the problem is not present
which means something between rc2 and rc3 has fixed the problem. I hate
it when problems (appear to) fix themselves as it usually means they're
just hiding.

I didn't see any patches between rc2 and rc3 that were likely to have
fixed this (but doesn't mean there wasn't one). I'm wondering whether I
should do a git bisect to see if I can find where it got fixed?

Could you see if you can reproduce it on 2.6.22-rc2?

Thanks
Peter
--
Peter Williams pwil3058@bigpond.net.au

"Learning, n. The kind of ignorance distinguishing the studious."
-- Ambrose Bierce