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Message-ID: <1361513971.5817.72.camel@marge.simpson.net> Date: Fri, 22 Feb 2013 07:19:31 +0100 From: Mike Galbraith <efault@....de> To: Michael Wang <wangyun@...ux.vnet.ibm.com> Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>, Ingo Molnar <mingo@...nel.org>, LKML <linux-kernel@...r.kernel.org>, Paul Turner <pjt@...gle.com>, Andrew Morton <akpm@...ux-foundation.org>, alex.shi@...el.com, Ram Pai <linuxram@...ibm.com>, "Nikunj A. Dadhania" <nikunj@...ux.vnet.ibm.com>, Namhyung Kim <namhyung@...nel.org> Subject: Re: [RFC PATCH v3 0/3] sched: simplify the select_task_rq_fair() On Fri, 2013-02-22 at 14:06 +0800, Michael Wang wrote: > On 02/22/2013 01:08 PM, Mike Galbraith wrote: > > On Fri, 2013-02-22 at 10:37 +0800, Michael Wang wrote: > > > >> According to the testing result, I could not agree this purpose of > >> wake_affine() benefit us, but I'm sure that wake_affine() is a terrible > >> performance killer when system is busy. > > > > (hm, result is singular.. pgbench in 1:N mode only?) > > I'm not sure about how pgbench implemented, all I know is it will create > several instance and access the database, I suppose no different from > several threads access database (1 server and N clients?). It's user switchable. -Mike -- 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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