linux-kernel - Re: SLUB: Support for statistics to help analyze allocator behavior

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Message-ID: <Pine.LNX.4.64.0802050923220.14675@sbz-30.cs.Helsinki.FI>
Date:	Tue, 5 Feb 2008 09:24:30 +0200 (EET)
From:	Pekka J Enberg <penberg@...helsinki.fi>
To:	Christoph Lameter <clameter@....com>
cc:	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: SLUB: Support for statistics to help analyze allocator behavior

Hi Christoph,

On Mon, 4 Feb 2008, Christoph Lameter wrote:
> The statistics provided here allow the monitoring of allocator behavior
> at the cost of some (minimal) loss of performance. Counters are placed in
> SLUB's per cpu data structure that is already written to by other code.

Looks good but I am wondering if we want to make the statistics per-CPU so 
that we can see the kmalloc/kfree ping-pong of, for example, hackbench 
better?

			Pekka
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