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Message-ID: <20080506115207.GA24862@linux.vnet.ibm.com> Date: Tue, 6 May 2008 17:22:07 +0530 From: Dhaval Giani <dhaval@...ux.vnet.ibm.com> To: "Zhang, Yanmin" <yanmin_zhang@...ux.intel.com> Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>, LKML <linux-kernel@...r.kernel.org>, Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>, Ingo Molnar <mingo@...e.hu>, Aneesh Kumar KV <aneesh.kumar@...ux.vnet.ibm.com> Subject: Re: volanoMark regression with kernel 2.6.26-rc1 On Tue, May 06, 2008 at 10:06:30AM +0800, Zhang, Yanmin wrote: > Comparing with 2.6.25, volanoMark has big regression with kernel 2.6.26-rc1. > It's about 50% on my 8-core stoakley, 16-core tigerton, and Itanium Montecito. > > With bisect, I located below patch. > > 18d95a2832c1392a2d63227a7a6d433cb9f2037e is first bad commit > commit 18d95a2832c1392a2d63227a7a6d433cb9f2037e > Author: Peter Zijlstra <a.p.zijlstra@...llo.nl> > Date: Sat Apr 19 19:45:00 2008 +0200 > > sched: fair-group: SMP-nice for group scheduling > > Implement SMP nice support for the full group hierarchy. > > If I reverse the patch with resolving some conflictions, volanoMark result could > be restored completely. > ok, that's bad. Let's get vatsa and Ingo also involved. -- regards, Dhaval -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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