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Date: Wed, 16 Sep 2009 20:50:00 +0200 From: Peter Zijlstra <a.p.zijlstra@...llo.nl> To: mingo@...hat.com, hpa@...or.com, linux-kernel@...r.kernel.org, tglx@...utronix.de, mingo@...e.hu Cc: linux-tip-commits@...r.kernel.org Subject: Re: [tip:sched/core] sched: Disable wakeup balancing On Wed, 2009-09-16 at 15:10 +0000, tip-bot for Peter Zijlstra wrote: > Commit-ID: 182a85f8a119c789610a9d464f4129ded9f3c107 > Gitweb: http://git.kernel.org/tip/182a85f8a119c789610a9d464f4129ded9f3c107 > Author: Peter Zijlstra <a.p.zijlstra@...llo.nl> > AuthorDate: Wed, 16 Sep 2009 13:24:49 +0200 > Committer: Ingo Molnar <mingo@...e.hu> > CommitDate: Wed, 16 Sep 2009 16:44:33 +0200 > > sched: Disable wakeup balancing > > Sysbench thinks SD_BALANCE_WAKE is too agressive and kbuild doesn't > really mind too much, SD_BALANCE_NEWIDLE picks up most of the > slack. > > On a dual socket, quad core, dual thread nehalem system: > > sysbench (--num_threads=16): > > SD_BALANCE_WAKE-: 13982 tx/s > SD_BALANCE_WAKE+: 15688 tx/s I got the + and - confused it seems.. sysbench is faster without BALANCE_WAKE. > kbuild (-j16): > > SD_BALANCE_WAKE-: 47.648295846 seconds time elapsed ( +- 0.312% ) > SD_BALANCE_WAKE+: 47.608607360 seconds time elapsed ( +- 0.026% ) -- 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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