From: Rakib Mullick <rakib.mullick@gmail.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@elte.hu>, LKML <linux-kernel@vger.kernel.org>
Subject: Re: SCHED: Is task migration necessary in sched_exec().
Date: Wed, 23 Dec 2009 18:52:34 +0600 [thread overview]
Message-ID: <b9df5fa10912230452q6edac4d3wb837a2e550cc5092@mail.gmail.com> (raw)
In-Reply-To: <1261570834.4937.141.camel@laptop>
On 12/23/09, Peter Zijlstra <peterz@infradead.org> wrote:
> On Wed, 2009-12-23 at 18:04 +0600, Rakib Mullick wrote:
> > On 12/23/09, Peter Zijlstra <peterz@infradead.org> wrote:
> > > On Wed, 2009-12-23 at 17:35 +0600, Rakib Mullick wrote:
>
> So its a win, right?
>
Yes - a fair win. But if load balancer moves other tasks from the runqueue
(2nd or 3rd task from your ex.) and thats how we also can achive 1/2 of cpu1's
time , right? Those waiting tasks could have effective 0 cache footprint too.
If they were not run before - right?
>
>
next prev parent reply other threads:[~2009-12-23 12:52 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-23 10:14 Rakib Mullick
2009-12-23 10:21 ` Peter Zijlstra
2009-12-23 10:46 ` Rakib Mullick
2009-12-23 10:53 ` Peter Zijlstra
2009-12-23 11:35 ` Rakib Mullick
2009-12-23 11:51 ` Peter Zijlstra
2009-12-23 12:04 ` Rakib Mullick
2009-12-23 12:20 ` Peter Zijlstra
2009-12-23 12:52 ` Rakib Mullick [this message]
2009-12-23 18:06 ` Peter Zijlstra
2009-12-25 2:53 ` Rakib Mullick
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