From: Yong Zhang <yong.zhang0@gmail.com>
To: "Artem S. Tashkinov" <t.artem@lycos.com>
Cc: arjan@infradead.org, linux-kernel@vger.kernel.org,
Ingo Molnar <mingo@elte.hu>,
Peter Zijlstra <peterz@infradead.org>
Subject: Re: Re: HT (Hyper Threading) aware process scheduling doesn't work as it should
Date: Mon, 31 Oct 2011 11:19:07 +0800 [thread overview]
Message-ID: <20111031031907.GB18057@zhy> (raw)
In-Reply-To: <1179048211.51348.1320013764432.JavaMail.mail@webmail17>
On Sun, Oct 30, 2011 at 10:29:23PM +0000, Artem S. Tashkinov wrote:
> > On Oct 31, 2011, Arjan van de Ven wrote:
> >
> > On Sun, 30 Oct 2011 19:57:12 +0000 (GMT)
> > "Artem S. Tashkinov" wrote:
> >
> > > Hello,
> > >
> > > It's known that if you want to reach maximum performance on HT
> > > enabled Intel CPUs you should distribute the load evenly between
> > > physical cores, and when you have loaded all of them you should then
> > > load the remaining virtual cores.
> >
> > this is a bold statement, and patently false if you have to threads of
> > one process that heavily share data between eachother...
> > (but true for more independent workloads)
>
> In my initial message I was talking about completely unrelated tasks/
> processes which share no data/instructions/whatever else. You don't
> need to trust my test case as you can carry out this test on your own.
(Cc'ing more people)
Maybe you can also show your test case here?
Thanks,
Yong
next prev parent reply other threads:[~2011-10-31 3:19 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-30 19:57 HT (Hyper Threading) aware process scheduling doesn't work as it should Artem S. Tashkinov
2011-10-30 21:26 ` Henrique de Moraes Holschuh
2011-10-30 21:51 ` Artem S. Tashkinov
2011-10-31 9:16 ` Henrique de Moraes Holschuh
2011-10-31 9:40 ` Artem S. Tashkinov
2011-10-31 11:58 ` Henrique de Moraes Holschuh
2011-11-01 4:14 ` Zhu Yanhai
2011-11-01 5:15 ` ffab ffa
2011-10-31 18:59 ` Chris Friesen
2011-11-01 6:01 ` Mike Galbraith
2011-10-30 22:12 ` Arjan van de Ven
2011-10-30 22:29 ` Artem S. Tashkinov
2011-10-31 3:19 ` Yong Zhang [this message]
2011-10-31 8:18 ` Artem S. Tashkinov
2011-10-31 10:06 ` Con Kolivas
2011-10-31 11:42 ` Mike Galbraith
2011-11-01 0:41 ` Con Kolivas
2011-11-01 0:58 ` Gene Heskett
2011-11-01 5:08 ` Mike Galbraith
2011-11-03 8:18 ` Ingo Molnar
2011-11-03 9:44 ` Artem S. Tashkinov
2011-11-03 10:29 ` Ingo Molnar
2011-11-03 12:42 ` Henrique de Moraes Holschuh
2011-11-03 13:06 ` Artem S. Tashkinov
2011-11-03 13:00 ` Mike Galbraith
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