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From: Nikhil Rao <ncrao@google.com>
To: Mike Galbraith <efault@gmx.de>
Cc: Rakib Mullick <rakib.mullick@gmail.com>,
	"Alex,Shi" <alex.shi@intel.com>,
	a.p.zijlstra@chello.nl, mingo@elte.hu,
	linux-kernel@vger.kernel.org, "Chen,
	Tim C" <tim.c.chen@intel.com>,
	zheng.z.yan@intel.com
Subject: Re: [performance bug] volanomark regression on 37-rc1
Date: Tue, 16 Nov 2010 08:31:57 -0800	[thread overview]
Message-ID: <AANLkTinrtz36tDZT2C39aVRsws-wmRraLGsMZ8_zxFA+@mail.gmail.com> (raw)
In-Reply-To: <1289921196.5169.176.camel@maggy.simson.net>

On Tue, Nov 16, 2010 at 7:26 AM, Mike Galbraith <efault@gmx.de> wrote:
> 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.
>

>From what I recall, I think removing the reset makes the original
patch a little less effective. I agree that we can remove the reset if
it hurts high frequency balancing.

-Thanks,
Nikhil

  reply	other threads:[~2010-11-16 16:32 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-11-16  9:34 [performance bug] volanomark regression on 37-rc1 Alex,Shi
2010-11-16 14:38 ` Rakib Mullick
2010-11-16 15:26   ` Mike Galbraith
2010-11-16 16:31     ` Nikhil Rao [this message]
2010-11-16 17:32       ` Mike Galbraith
2010-11-16 19:27         ` Nikhil Rao
2010-11-16 19:37           ` Peter Zijlstra
2010-11-17  1:17         ` Alex,Shi
     [not found]           ` <1290022924-3548-1-git-send-email-ncrao@google.com>
2010-11-17 19:45             ` Nikhil Rao
2010-11-18 14:08             ` [tip:sched/urgent] sched: Fix idle balancing tip-bot for Nikhil Rao
2010-11-18 14:08         ` [tip:sched/urgent] sched: Fix volanomark performance regression tip-bot for Alex Shi
2010-11-17  0:23   ` [performance bug] volanomark regression on 37-rc1 Alex,Shi
2010-11-16 16:21 ` Nikhil Rao

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