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List:       linux-kernel
Subject:    Re: Make pipe data structure be a circular list of pages, rather
From:       Davide Libenzi <davidel () xmailserver ! org>
Date:       2005-01-09 23:19:04
Message-ID: Pine.LNX.4.58.0501082013350.22849 () bigblue ! dev ! mdolabs ! com
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On Sat, 8 Jan 2005, Linus Torvalds wrote:

> Side note: the SMP numbers seem to fluctuate wildly making any
> benchmarking a bit suspect. They probably depend very much on just how
> things get scheduled, and on inter-CPU cache behaviour.

Lmbench results on SMP are bogus. OTOH you can easily make a more 
deterministic SMP pipe bench by making the two tasks affine to two 
different CPUs.


- Davide

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