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.
WARNING: multiple messages have this Message-ID (diff)
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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next prev parent reply other threads:[~2008-07-16 14:05 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-16 12:29 [PATCH][RFC] slub: increasing order reduces memory usage of some key caches Richard Kennedy
2008-07-16 12:29 ` Richard Kennedy
2008-07-16 13:21 ` Christoph Lameter
2008-07-16 13:21 ` Christoph Lameter
2008-07-16 13:58 ` Richard Kennedy
2008-07-16 13:58 ` Richard Kennedy
2008-07-16 14:03 ` Christoph Lameter [this message]
2008-07-16 14:03 ` Christoph Lameter
2008-07-16 14:30 ` Richard Kennedy
2008-07-16 14:30 ` Richard Kennedy
2008-07-16 14:33 ` Vegard Nossum
2008-07-16 14:33 ` Vegard Nossum
2008-07-16 14:46 ` Christoph Lameter
2008-07-16 14:46 ` Christoph Lameter
2008-07-18 9:57 ` Richard Kennedy
2008-07-18 9:57 ` Richard Kennedy
2008-07-18 14:17 ` Christoph Lameter
2008-07-18 14:17 ` Christoph Lameter
2008-07-18 14:20 ` Christoph Lameter
2008-07-18 14:20 ` Christoph Lameter
2008-07-18 14:42 ` Richard Kennedy
2008-07-18 14:42 ` Richard Kennedy
2008-07-18 14:55 ` Christoph Lameter
2008-07-18 14:55 ` Christoph Lameter
2008-07-18 15:22 ` Richard Kennedy
2008-07-18 15:22 ` Richard Kennedy
2008-07-18 17:13 ` Christoph Lameter
2008-07-18 17:13 ` Christoph Lameter
2008-07-16 19:52 ` Mel Gorman
2008-07-16 19:52 ` Mel Gorman
2008-07-17 9:48 ` Richard Kennedy
2008-07-17 9:48 ` Richard Kennedy
2008-07-16 15:52 ` Christoph Lameter
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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