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Date: Wed, 7 May 2008 00:04:09 -0700 From: Andrew Morton <akpm@...ux-foundation.org> To: "Zhang, Yanmin" <yanmin_zhang@...ux.intel.com> Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>, LKML <linux-kernel@...r.kernel.org> Subject: Re: volanoMark regression with kernel 2.6.26-rc1 On Tue, 06 May 2008 10:06:30 +0800 "Zhang, Yanmin" <yanmin_zhang@...ux.intel.com> 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 The merge window strikes again? > > 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. > > ___ > AIM7 (use tmpfs) also has ___more than 40% on my 8-core stoakley, 16-core tigerton, > and Itanium Montecito, but I verified that aim7 regression isn't caused by above > patch. I am doing new bisect to check aim7 now. > -- 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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