From: Christoph Lameter <clameter@sgi.com>
To: Matt Mackall <mpm@selenic.com>
Cc: Mel Gorman <mel@csn.ul.ie>, Pekka Enberg <penberg@cs.helsinki.fi>,
linux-mm@kvack.org
Subject: Re: [patch 0/8] slub: Fallback to order 0 and variable order slab support
Date: Tue, 4 Mar 2008 16:04:41 -0800 (PST) [thread overview]
Message-ID: <Pine.LNX.4.64.0803041601520.21992@schroedinger.engr.sgi.com> (raw)
In-Reply-To: <20080304190126.GM10223@waste.org>
On Tue, 4 Mar 2008, Matt Mackall wrote:
> Thanks for looking at this, Mel. Could you try testing.. umm...
> slub_max_order=1? That's never going to get us more than one more
> object per slab, but if we can go from 1 per page to 1.5 per page, it
> might be worth it. Task structs are roughly in that size domain.
Note that you would also have decrease the number of objects per slab.
good combinations:
slub_max_order=3 slub_min_objects=8
(Was the config used for mm with the earlier version of higher order alloc w/o fallback)
slub_max_order=1 slub_min_objects=4
(upstream config w/o fallback)
The default in mm is right now
slub_max_order=4 slub_min_objects=60
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prev parent reply other threads:[~2008-03-05 0:04 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20080229044803.482012397@sgi.com>
[not found] ` <20080229044820.044485187@sgi.com>
2008-02-29 8:13 ` [patch 7/8] slub: Make the order configurable for each slab cache Pekka Enberg
2008-02-29 19:37 ` Christoph Lameter
2008-03-01 9:47 ` Pekka Enberg
2008-03-03 17:49 ` Christoph Lameter
2008-03-03 22:56 ` Pekka Enberg
2008-03-03 23:36 ` Christoph Lameter
[not found] ` <20080229044820.298792748@sgi.com>
2008-02-29 8:13 ` [patch 8/8] slub: Simplify any_slab_object checks Pekka Enberg
[not found] ` <20080229044819.800974712@sgi.com>
2008-02-29 8:19 ` [patch 6/8] slub: Adjust order boundaries and minimum objects per slab Pekka Enberg
2008-02-29 19:41 ` Christoph Lameter
2008-03-01 9:58 ` Pekka J Enberg
2008-03-03 17:52 ` Christoph Lameter
2008-03-03 21:34 ` Matt Mackall
2008-03-03 22:36 ` Christoph Lameter
[not found] ` <20080229044818.999367120@sgi.com>
2008-02-29 8:59 ` [patch 3/8] slub: Update statistics handling for variable order slabs Pekka Enberg
2008-02-29 19:43 ` Christoph Lameter
2008-03-01 10:29 ` Pekka Enberg
2008-03-04 12:20 ` [patch 0/8] slub: Fallback to order 0 and variable order slab support Mel Gorman
2008-03-04 18:53 ` Christoph Lameter
2008-03-05 18:28 ` Mel Gorman
2008-03-05 18:52 ` Christoph Lameter
2008-03-06 22:04 ` Mel Gorman
2008-03-06 22:18 ` Christoph Lameter
2008-03-07 12:17 ` Mel Gorman
2008-03-07 19:50 ` Christoph Lameter
2008-03-04 19:01 ` Matt Mackall
2008-03-05 0:04 ` Christoph Lameter [this message]
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