linux-kernel - Re: 2.6.25-rc1: volanoMark 45% regression

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Date:	Mon, 18 Feb 2008 10:26:40 +0530
From:	Balbir Singh <balbir@...ux.vnet.ibm.com>
To:	"Zhang, Yanmin" <yanmin_zhang@...ux.intel.com>
CC:	vatsa@...ux.vnet.ibm.com, LKML <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: 2.6.25-rc1: volanoMark 45% regression

Zhang, Yanmin wrote:
>>
>>>  Did you have
>>> CONFIG_FAIR_USER_SCHED enabled in both cases?
>> Yes.
>>
>> CONFIG_FAIR_GROUP_SCHED=y
>> CONFIG_FAIR_USER_SCHED=y
>>

Interesting that you have CONFIG_FAIR_USER_SCHED. Do you have any other users on
the system (are they running anything at the time of the benchmark)? Could you
turn off CONFIG_FAIR_USER_SCHED  and turn on CONFIG_FAIR_GROUP_SCHED. I am going
to run some tests with 2.6.25-rc2 and Volanomark and see how that goes.


-- 
	Warm Regards,
	Balbir Singh
	Linux Technology Center
	IBM, ISTL
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