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

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Date:	Fri, 01 Aug 2008 10:35:11 +0800
From:	Miao Xie <miaox@...fujitsu.com>
To:	"Zhang, Yanmin" <yanmin_zhang@...ux.intel.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 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?

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


> -yanmin
> 
> 
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