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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: Wed, 16 Jul 2008 09:03:42 -0500	[thread overview]
Message-ID: <487DFFBE.5050407@linux-foundation.org> (raw)
In-Reply-To: <1216216730.3122.60.camel@castor.localdomain>

Richard Kennedy wrote:

> before
> dentry             82136  82137    208   19    1 : tunables    0    0    0 : slabdata   4323   4323      0
> after
> dentry             79482  79482    208   39    2 : tunables    0    0    0 : slabdata   2038   2038      0

19 objects with an order 1 alloc and 208 byte size? Urgh. 8192/208 = 39 and not 19.

Kmemcheck or something else active? We seem to be loosing 50% of our memory.

Pekka: Is the slabinfo emulation somehow broken?

I'd really like to see the output of slabinfo dentry.


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  reply	other threads:[~2008-07-16 14:03 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 [this message]
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
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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