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From: David Newall <davidn@davidnewall.com>
To: Eric Dumazet <dada1@cosmosbay.com>
Cc: David Miller <davem@davemloft.net>,
	dmantipov@yandex.ru, linux-kernel@vger.kernel.org
Subject: Re: Are Linux pipes slower than the FreeBSD ones ?
Date: Wed, 05 Mar 2008 22:42:17 +1030	[thread overview]
Message-ID: <47CE8E21.2000309@davidnewall.com> (raw)
In-Reply-To: <47CE6C41.3090303@cosmosbay.com>

Eric Dumazet wrote:
> I tried the 'pipe' prog on a fresh linux-2.6.24.2, on a dual Xeon 5120
> machine, and we can notice that four cpus are used (but only two
> threads are running on this benchmark)

Do the threads migrate from CPU to CPU?  That would be sub-optimal,
wouldn't it?

  parent reply	other threads:[~2008-03-05 12:12 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-05  7:46 Antipov Dmitry
2008-03-05  8:00 ` David Miller
2008-03-05  9:47   ` Eric Dumazet
2008-03-05 10:19     ` Andi Kleen
2008-03-05 12:12     ` David Newall [this message]
2008-03-05 14:20     ` Nick Piggin
2008-03-05 14:55       ` Eric Dumazet
2008-03-05 15:38         ` Nick Piggin
2008-03-05 15:55           ` Ray Lee
2008-03-05 16:02             ` Nick Piggin
2008-03-06 12:11       ` Dmitry Antipov
2008-03-17 12:53         ` Nick Piggin

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