Re: volanoMark regression with kernel 2.6.26-rc1

[Dhaval Giani]

On Tue, May 06, 2008 at 10:06:30AM +0800, Zhang, Yanmin wrote:
> Comparing with 2.6.25, volanoMark has big regression with kernel 2.6.26-rc1.
> It's about 50% on my 8-core stoakley, 16-core tigerton, and Itanium Montecito.
> 
> With bisect, I located below patch.
> 
> 18d95a2832c1392a2d63227a7a6d433cb9f2037e is first bad commit
> commit 18d95a2832c1392a2d63227a7a6d433cb9f2037e
> Author: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
> Date:   Sat Apr 19 19:45:00 2008 +0200
> 
>     sched: fair-group: SMP-nice for group scheduling
>     
>     Implement SMP nice support for the full group hierarchy.
> 
> If I reverse the patch with resolving some conflictions, volanoMark result could
> be restored completely.
> 

ok, that's bad. Let's get vatsa and Ingo also involved.

-- 
regards,
Dhaval
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