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Subject: Re: 2.6.25-rc3-git3: Reported regressions from 2.6.24
From: "Zhang, Yanmin" <yanmin_zhang@linux.intel.com>
To: Dhaval Giani <dhaval@linux.vnet.ibm.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>, LKML <linux-kernel@vger.kernel.org>,
       Andrew Morton <akpm@linux-foundation.org>,
       Linus Torvalds <torvalds@linux-foundation.org>,
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       Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>,
       Balbir Singh <balbir@in.ibm.com>, Ingo Molnar <mingo@elte.hu>
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Date: Wed, 05 Mar 2008 10:06:22 +0800
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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@linux.intel.com>
> > Date		: 2008-02-13 10:30
> > References	: http://lkml.org/lkml/2008/2/13/128
> > Handled-By	: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
> > 		  Balbir Singh <balbir@linux.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.

-yanmin


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