linux-kernel - Re: SLUB: Increasing partial pages

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Message-ID: <Pine.LNX.4.64.0801161347160.11353@schroedinger.engr.sgi.com>
Date:	Wed, 16 Jan 2008 14:01:08 -0800 (PST)
From:	Christoph Lameter <clameter@....com>
To:	Matthew Wilcox <matthew@....cx>
cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: SLUB: Increasing partial pages

On Wed, 16 Jan 2008, Matthew Wilcox wrote:

> I sent you a mail on December 6th ... here are the contents of that
> mail:

Dec 6th? I was on vacation then and it seems that I was unable to 
reproduce the oopses. Can I get some backtraces or other information 
that would allow me to diagnose the problem?

> Applying just patches 1-7 and 9 leads to a slight (0.34%) performance
> reduction compared to slub.  That is 6.45% versus slab, reduces to 6.79%
> with the 8 patches applied.

Patch 8 is the one that optimizes the fastpath. How much runtime 
variability have these tests?
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