From: Mike Galbraith <efault@gmx.de>
To: "Zhang, Yanmin" <yanmin_zhang@linux.intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>,
LKML <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>
Subject: Re: hackbench regression with kernel 2.6.32-rc1
Date: Mon, 12 Oct 2009 10:05:31 +0200 [thread overview]
Message-ID: <1255334731.7282.3.camel@marge.simson.net> (raw)
In-Reply-To: <1255331120.3684.43.camel@ymzhang>
On Mon, 2009-10-12 at 15:05 +0800, Zhang, Yanmin wrote:
> The good news is only tbench has about 6% regression on Nehalem machines.
> Other regressions such like hackbench/aim7/volanoMark is not clear/big on
> Nehalem. But reverting the original 2 patches don't fix the tbench regression
> on Nehalem machines.
Could be NO_NEXT_BUDDY. NEXT_BUDDY is pretty important for scaling.
-Mike
next prev parent reply other threads:[~2009-10-12 8:06 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-09 9:19 hackbench regression with kernel 2.6.32-rc1 Zhang, Yanmin
2009-10-09 10:43 ` Peter Zijlstra
2009-10-12 7:05 ` Zhang, Yanmin
2009-10-12 8:05 ` Mike Galbraith [this message]
2009-10-12 14:21 ` Peter Zijlstra
2009-10-12 14:33 ` Mike Galbraith
2009-10-13 3:12 ` Zhang, Yanmin
2009-10-13 9:39 ` Mike Galbraith
2009-10-13 11:08 ` Mike Galbraith
2009-10-16 11:06 ` Mike Galbraith
2009-10-27 8:03 ` Zhang, Yanmin
2009-10-27 14:42 ` Mike Galbraith
2009-10-28 9:29 ` Zhang, Yanmin
2009-10-28 14:22 ` Mike Galbraith
2009-10-29 0:50 ` Zhang, Yanmin
2009-10-29 5:46 ` Mike Galbraith
2009-10-29 6:26 ` Zhang, Yanmin
2009-10-29 9:14 ` [patch] " Mike Galbraith
2009-10-30 2:02 ` Zhang, Yanmin
2009-10-14 13:13 ` [tip:sched/urgent] sched: Do less agressive buddy clearing tip-bot for Peter Zijlstra
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