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From: Andi Kleen <andi@firstfloor.org>
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 11:19:36 +0100	[thread overview]
Message-ID: <p73d4q95v7r.fsf@bingen.suse.de> (raw)
In-Reply-To: <47CE6C41.3090303@cosmosbay.com> (Eric Dumazet's message of "Wed\, 05 Mar 2008 10\:47\:45 +0100")

Eric Dumazet <dada1@cosmosbay.com> writes:
>
> This benchmarek mostly stress scheduler AFAIK, not really pipe() code...
>
> Lot of context switches...

The recent mysql sysbench benchmark where they also won was also such
a (somewhat unrealistic) scheduler benchmark with a lot of over
scheduling. Just speculating here, but perhaps the context switch got
slower recently?

-Andi

  reply	other threads:[~2008-03-05 10:19 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-05  7:46 Are Linux pipes slower than the FreeBSD ones ? Antipov Dmitry
2008-03-05  8:00 ` David Miller
2008-03-05  9:47   ` Eric Dumazet
2008-03-05 10:19     ` Andi Kleen [this message]
2008-03-05 12:12     ` David Newall
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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