Re: SLUB: Increasing partial pages

From: Christoph Lameter
Date: Wed Jan 16 2008 - 17:01:20 EST


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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