From: William Lee Irwin III <wli@holomorphy.com>
To: Manfred Spraul <manfred@colorfullife.com>
Cc: anton@samba.org, linux-kernel@vger.kernel.org
Subject: Re: 2.5.50-BK + 24 CPUs
Date: Sun, 8 Dec 2002 13:28:08 -0800 [thread overview]
Message-ID: <20021208212808.GY9882@holomorphy.com> (raw)
In-Reply-To: <3DF3B7FB.9010902@colorfullife.com>
Anton wrote:
>> ie during the compile we scheduled 56283 times, and 41984 of them were
>> caused by pipes.
On Sun, Dec 08, 2002 at 10:22:03PM +0100, Manfred Spraul wrote:
> The linux pipe implementation has only a page sized buffer - with 4 kB
> pages, transfering 1 MB through a pipe means at 512 context switches.
Hmm. What happened to that pipe buffer size increase patch? That sounds
like it might help here, but only if those things are trying to shove
more than 4KB through the pipe at a time.
Bill
next prev parent reply other threads:[~2002-12-08 21:20 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-08 21:22 2.5.50-BK + 24 CPUs Manfred Spraul
2002-12-08 21:28 ` William Lee Irwin III [this message]
2002-12-08 23:22 ` David S. Miller
2002-12-08 23:01 ` William Lee Irwin III
2002-12-09 17:03 ` Manfred Spraul
2002-12-09 20:15 ` David S. Miller
2002-12-09 21:12 ` Manfred Spraul
-- strict thread matches above, loose matches on Subject: below --
2002-12-08 13:09 Anton Blanchard
2002-12-08 14:49 ` Rik van Riel
2002-12-08 16:45 ` Rik van Riel
2002-12-09 14:08 ` Anton Blanchard
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