Re: 2.6.25-rc1: volanoMark 45% regression

[Balbir Singh]

Zhang, Yanmin wrote:
> volanoMark has 45% regression with kernel 2.6.25-rc1 on my both 8-core
> stoakley and 16-core Tigerton.
> 
> I used bisect to locate below patch.
> 
> commit 58e2d4ca581167c2a079f4ee02be2f0bc52e8729
> Author: Srivatsa Vaddagiri <vatsa@xxxxxxxxxxxxxxxxxx>
> Date:   Fri Jan 25 21:08:00 2008 +0100
> 
>     sched: group scheduling, change how cpu load is calculated
> 
> 
> 
> hackbench has about 30% regression on 16-core tigerton, but has about 10% improvement
> on 8-core stoakley.
> 
> In addition, tbench has about 6% regression on my 8-core stoakley and
> 25% regression on 16-core stoakley. Some other benchmarks, like netperf/aim7
> also have some regression. I will verify if they are all related to the
> patch.
> 
> -yanmin

Hi, Yamin,

Thanks for reporting the issue? Any chance we could getthe Oprofile output for
the run? The exact commandline and .config being used would also help.

-- 
	Warm Regards,
	Balbir Singh
	Linux Technology Center
	IBM, ISTL
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/