From: Christoph Lameter <cl@linux-foundation.org>
To: Richard Kennedy <richard@rsk.demon.co.uk>
Cc: penberg@cs.helsinki.fi, mpm@selenic.com,
linux-mm <linux-mm@kvack.org>,
lkml <linux-kernel@vger.kernel.org>, Mel Gorman <mel@csn.ul.ie>
Subject: Re: [PATCH][RFC] slub: increasing order reduces memory usage of some key caches
Date: Fri, 18 Jul 2008 12:13:54 -0500 [thread overview]
Message-ID: <4880CF52.5020406@linux-foundation.org> (raw)
In-Reply-To: <1216394560.3082.32.camel@castor.localdomain>
Richard Kennedy wrote:
> On Fri, 2008-07-18 at 09:55 -0500, Christoph Lameter wrote:
>> OK that is now 4215 pages before and 4112 after the patch? Yawn.... So barely any effect?
>
> Well it's not huge but there's another 100+ pages out of radix_tree,
> too. & I've not inspected the rest of the cache usage.
Can you post these numbers with the slabinfo for the radix tree as well? It may be that there are a lot of sparsely populated slab pages that waste memory.
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next prev parent reply other threads:[~2008-07-18 17:13 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-16 12:29 Richard Kennedy
2008-07-16 13:21 ` Christoph Lameter
2008-07-16 13:58 ` Richard Kennedy
2008-07-16 14:03 ` Christoph Lameter
2008-07-16 14:30 ` Richard Kennedy
2008-07-16 14:33 ` Vegard Nossum
2008-07-16 14:46 ` Christoph Lameter
2008-07-18 9:57 ` Richard Kennedy
2008-07-18 14:17 ` Christoph Lameter
2008-07-18 14:20 ` Christoph Lameter
2008-07-18 14:42 ` Richard Kennedy
2008-07-18 14:55 ` Christoph Lameter
2008-07-18 15:22 ` Richard Kennedy
2008-07-18 17:13 ` Christoph Lameter [this message]
2008-07-16 19:52 ` Mel Gorman
2008-07-17 9:48 ` Richard Kennedy
2008-07-16 15:52 ` Christoph Lameter
2008-07-16 15:59 ` Christoph Lameter
2008-07-17 10:09 ` Richard Kennedy
2008-07-17 16:56 ` Christoph Lameter
2008-07-18 10:17 ` Richard Kennedy
2008-07-18 14:21 ` Christoph Lameter
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