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Date: Sun, 8 Dec 2002 13:28:08 -0800
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
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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
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