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From: Greg KH <greg@kroah.com>
To: Christoph Lameter <cl@linux-foundation.org>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>,
	akpm@linux-foundation.org, Christoph Lameter <clameter@sgi.com>,
	linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	Mel Gorman <mel@skynet.ie>,
	andi@firstfloor.org, Rik van Riel <riel@redhat.com>,
	mpm@selenic.com, Dave Chinner <david@fromorbit.com>
Subject: Re: [patch 01/19] slub: Add defrag_ratio field and sysfs support.
Date: Tue, 12 Aug 2008 17:40:06 -0700	[thread overview]
Message-ID: <20080813004006.GD22793@kroah.com> (raw)
In-Reply-To: <20080811150653.575096604@quilx.com>

On Mon, Aug 11, 2008 at 08:06:17AM -0700, Christoph Lameter wrote:
> The defrag_ratio is used to set the threshold at which defragmentation
> should be attempted on a slab page.
> 
> The allocation ratio is measured by the percentage of the available slots
> allocated.
> 
> Add a defrag ratio field and set it to 30% by default. A limit of 30% specified
> that less than 3 out of 10 available slots for objects are in use before
> slab defragmeentation runs.

Any new sysfs file should also add documentation in Documentation/ABI.

Please add that to this patch.

thanks,

greg k-h

  reply	other threads:[~2008-08-13  0:46 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-08-11 15:06 [patch 00/19] Slab Fragmentation Reduction V14 Christoph Lameter
2008-08-11 15:06 ` [patch 01/19] slub: Add defrag_ratio field and sysfs support Christoph Lameter
2008-08-13  0:40   ` Greg KH [this message]
2008-08-11 15:06 ` [patch 02/19] slub: Replace ctor field with ops field in /sys/slab/* Christoph Lameter
2008-08-11 15:06 ` [patch 03/19] slub: Add get() and kick() methods Christoph Lameter
2008-08-11 15:06 ` [patch 04/19] slub: Sort slab cache list and establish maximum objects for defrag slabs Christoph Lameter
2008-08-11 15:06 ` [patch 05/19] slub: Slab defrag core Christoph Lameter
2008-08-11 15:06 ` [patch 06/19] slub: Add KICKABLE to avoid repeated kick() attempts Christoph Lameter
2008-08-11 15:06 ` [patch 07/19] slub: Extend slabinfo to support -D and -F options Christoph Lameter
2008-08-11 15:06 ` [patch 08/19] slub/slabinfo: add defrag statistics Christoph Lameter
2008-08-11 15:06 ` [patch 09/19] slub: Trigger defragmentation from memory reclaim Christoph Lameter
2008-08-11 15:06 ` [patch 10/19] buffer heads: Support slab defrag Christoph Lameter
2008-08-11 15:06 ` [patch 11/19] inodes: Support generic defragmentation Christoph Lameter
2008-08-11 15:06 ` [patch 12/19] Filesystem: Ext2 filesystem defrag Christoph Lameter
2008-08-11 15:06 ` [patch 13/19] Filesystem: Ext3 " Christoph Lameter
2008-08-11 15:06 ` [patch 14/19] Filesystem: Ext4 " Christoph Lameter
2008-08-11 15:06 ` [patch 15/19] Filesystem: XFS slab defragmentation Christoph Lameter
2008-08-12  0:20   ` Dave Chinner
2008-08-12  7:08     ` Pekka Enberg
2008-08-12 18:21       ` Christoph Lameter
2008-08-13  6:38         ` Pekka Enberg
2008-08-11 15:06 ` [patch 16/19] Filesystem: /proc filesystem support for slab defrag Christoph Lameter
2008-08-11 15:06 ` [patch 17/19] Filesystem: Slab defrag: Reiserfs support Christoph Lameter
2008-08-11 15:06 ` [patch 18/19] dentries: Add constructor Christoph Lameter
2008-08-13  7:12   ` Pekka Enberg
2008-08-11 15:06 ` [patch 19/19] dentries: dentry defragmentation Christoph Lameter
2008-08-12  6:50 ` [patch 00/19] Slab Fragmentation Reduction V14 Pekka Enberg
  -- strict thread matches above, loose matches on Subject: below --
2008-05-10  2:21 [patch 00/19] Slab Fragmentation Reduction V13 Christoph Lameter
2008-05-10  2:21 ` [patch 01/19] slub: Add defrag_ratio field and sysfs support Christoph Lameter

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