linux-kernel - Re: 2.6.25-rc3-git3: Reported regressions from 2.6.24

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Message-ID: <47CE183C.7040105@linux.vnet.ibm.com>
Date:	Wed, 05 Mar 2008 09:19:16 +0530
From:	Balbir Singh <balbir@...ux.vnet.ibm.com>
To:	"Zhang, Yanmin" <yanmin_zhang@...ux.intel.com>
CC:	Dhaval Giani <dhaval@...ux.vnet.ibm.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Adrian Bunk <bunk@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>,
	Balbir Singh <balbir@...ibm.com>, Ingo Molnar <mingo@...e.hu>
Subject: Re: 2.6.25-rc3-git3: Reported regressions from 2.6.24

Zhang, Yanmin wrote:
> On Tue, 2008-03-04 at 16:57 +0530, Dhaval Giani wrote:
>>> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=9978
>>> Subject		: 2.6.25-rc1: volanoMark 45% regression
>>> Submitter	: Zhang, Yanmin <yanmin_zhang@...ux.intel.com>
>>> Date		: 2008-02-13 10:30
>>> References	: http://lkml.org/lkml/2008/2/13/128
>>> Handled-By	: Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>
>>> 		  Balbir Singh <balbir@...ux.vnet.ibm.com>
>>  
>> Peter's revert of the load balance patches should fix this one. Yanmin,
>> could you please confirm if the patch at
>> http://lkml.org/lkml/2008/2/25/202 helps?
> I tested it against 2.6.25-rc3 on my 16-core tigerton machine. It really improves
> volano result although it doesn't recover all the result.
> Comparing with 2.6.24, without the patch, volanoMark has about 50% regression
> with 2.6.25-rc3. With the patch, volanoMark has about 15% regression.
> 

Have you had a chance to git-bisect the culprit after the revert?

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