linux-kernel - Re: [performance bug] volanomark regression on 37-rc1

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Date:	Tue, 16 Nov 2010 08:26:36 -0700
From:	Mike Galbraith <efault@....de>
To:	Rakib Mullick <rakib.mullick@...il.com>
Cc:	"Alex,Shi" <alex.shi@...el.com>, ncrao@...gle.com,
	a.p.zijlstra@...llo.nl, mingo@...e.hu,
	linux-kernel@...r.kernel.org, "Chen, Tim C" <tim.c.chen@...el.com>,
	zheng.z.yan@...el.com
Subject: Re: [performance bug] volanomark regression on 37-rc1

On Tue, 2010-11-16 at 20:38 +0600, Rakib Mullick wrote:

> Does VolanoMark is used for scheduler benchmarking? If I'm not wrong,
> I don't think it directly relates to scheduler benchmarking.

It's not generally considered to be a wonderful benchmark, but it is a
good indicator, and worth keeping an eye on IMHO.

I don't recall whether that patch works with the idle testcase without
resetting the throttle, or if it's only a bit less effective.  If it's
only a little less effective, I'd be inclined to just whack the reset as
Alex did.  Whatever is done has to prevent high frequency balancing.

	-Mike

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