linux-kernel - Re: VolanoMark regression with 2.6.27-rc1

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Date:	Fri, 01 Aug 2008 11:08:37 +0800
From:	"Zhang, Yanmin" <yanmin_zhang@...ux.intel.com>
To:	miaox@...fujitsu.com
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...e.hu>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: VolanoMark regression with 2.6.27-rc1


On Fri, 2008-08-01 at 10:35 +0800, Miao Xie wrote:
> on 2008-8-1 8:39 Zhang, Yanmin wrote:
> [snip]
> >> The regression I reported exists on:
> >> 1) 8-core+HT(totally 16 logical processor) tulsa: 40% regression with volano, 8% with oltp;
> >> 2) 8-core+HT Montvale Itanium: 9% regression with volano; 8% with oltp;
> >> 3) 16-core tigerton: %70 with volano, %18 with oltp;
> >> 4) 8-core stoakley: %15 with oltp, testing failed with volanoMark.
> >>
> >> So the issues are popular on different architectures.
> > I know kernel needs the features and it might not be a good idea to reject them over and over again.
> > I will collect more data on tigerton and try to optimize it.
> 
> Could you tell me the exact config options? the same with last time?
Yes.

> 
> as follows:
> 
> # CONFIG_CGROUPS is not set
> CONFIG_GROUP_SCHED=y
> CONFIG_FAIR_GROUP_SCHED=y
> # CONFIG_RT_GROUP_SCHED is not set
> CONFIG_USER_SCHED=y
> # CONFIG_CGROUP_SCHED is not set


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