From: Christoph Lameter <cl@linux.com>
To: Richard Kennedy <richard@rsk.demon.co.uk>
Cc: Pekka Enberg <penberg@kernel.org>,
lkml <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>
Subject: Re: [PATCH/RFC] MM slub: add a sysfs entry to show the calculated number of fallback slabs
Date: Fri, 12 Nov 2010 09:13:40 -0600 (CST) [thread overview]
Message-ID: <alpine.DEB.2.00.1011120911310.11746@router.home> (raw)
In-Reply-To: <1289561309.1972.30.camel@castor.rsk>
On Fri, 12 Nov 2010, Richard Kennedy wrote:
> On my desktop workloads (kernel compile etc) I'm seeing surprisingly
> little slab fragmentation. Do you have any suggestions for test cases
> that will fragment the memory?
Do a massive scan through huge amounts of files that triggers inode and
dentry reclaim?
> + * Note that this can give the wrong answer if the user has changed the
> + * order of this slab via sysfs.
Not good. Maybe have an additional counter in kmem_cache_node instead?
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next prev parent reply other threads:[~2010-11-12 15:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-12 11:28 Richard Kennedy
2010-11-12 15:13 ` Christoph Lameter [this message]
2010-11-12 16:22 ` Richard Kennedy
2010-11-12 16:29 ` Christoph Lameter
2010-11-12 18:46 ` David Rientjes
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