From: Mel Gorman <mel@csn.ul.ie>
To: Andi Kleen <andi@firstfloor.org>
Cc: Linux Memory Management List <linux-mm@kvack.org>,
Pekka Enberg <penberg@cs.helsinki.fi>,
Rik van Riel <riel@redhat.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Christoph Lameter <cl@linux-foundation.org>,
Johannes Weiner <hannes@cmpxchg.org>,
Nick Piggin <npiggin@suse.de>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Lin Ming <ming.m.lin@intel.com>,
Zhang Yanmin <yanmin_zhang@linux.intel.com>
Subject: Re: [RFC PATCH 00/20] Cleanup and optimise the page allocator
Date: Mon, 23 Feb 2009 14:32:32 +0000 [thread overview]
Message-ID: <20090223143232.GJ6740@csn.ul.ie> (raw)
In-Reply-To: <87ljryuij0.fsf@basil.nowhere.org>
On Mon, Feb 23, 2009 at 01:02:59AM +0100, Andi Kleen wrote:
> Mel Gorman <mel@csn.ul.ie> writes:
>
>
> BTW one additional tuning opportunity would be to change cpusets to
> always precompute zonelists out of line and then avoid doing
> all these checks in the fast path.
>
hmm, it would be ideal but I haven't looked too closely at how it could
be implemented. I thought first you could just associate a zonelist with
the cpuset but you'd need one for each node allowed by the cpuset so it
could get quite large. Then again, it might be worthwhile if cpusets
were expected to be very long lived.
If there are any users of cpusets watching, would you be interested in
profiling with cpusets enabled and see how much time we spend in that
code?
--
Mel Gorman
Part-time Phd Student Linux Technology Center
University of Limerick IBM Dublin Software Lab
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next prev parent reply other threads:[~2009-02-23 14:32 UTC|newest]
Thread overview: 95+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-22 23:17 Mel Gorman
2009-02-22 23:17 ` [PATCH 01/20] Replace __alloc_pages_internal() with __alloc_pages_nodemask() Mel Gorman
2009-02-22 23:17 ` [PATCH 02/20] Do not sanity check order in the fast path Mel Gorman
2009-02-22 23:17 ` [PATCH 03/20] Do not check NUMA node ID when the caller knows the node is valid Mel Gorman
2009-02-23 15:01 ` Christoph Lameter
2009-02-23 16:24 ` Mel Gorman
2009-02-22 23:17 ` [PATCH 04/20] Convert gfp_zone() to use a table of precalculated values Mel Gorman
2009-02-23 11:55 ` [PATCH] mm: clean up __GFP_* flags a bit Peter Zijlstra
2009-02-23 18:01 ` Mel Gorman
2009-02-23 20:27 ` Vegard Nossum
2009-02-23 15:23 ` [PATCH 04/20] Convert gfp_zone() to use a table of precalculated values Christoph Lameter
2009-02-23 15:41 ` Nick Piggin
2009-02-23 15:43 ` [PATCH 04/20] Convert gfp_zone() to use a table of precalculated value Christoph Lameter
2009-02-23 16:40 ` Mel Gorman
2009-02-23 17:03 ` Christoph Lameter
2009-02-24 1:32 ` KAMEZAWA Hiroyuki
2009-02-24 3:59 ` Nick Piggin
2009-02-24 5:20 ` KAMEZAWA Hiroyuki
2009-02-24 11:36 ` Mel Gorman
2009-02-23 16:33 ` [PATCH 04/20] Convert gfp_zone() to use a table of precalculated values Mel Gorman
2009-02-23 16:33 ` [PATCH 04/20] Convert gfp_zone() to use a table of precalculated value Christoph Lameter
2009-02-23 17:41 ` Mel Gorman
2009-02-22 23:17 ` [PATCH 05/20] Check only once if the zonelist is suitable for the allocation Mel Gorman
2009-02-22 23:17 ` [PATCH 06/20] Break up the allocator entry point into fast and slow paths Mel Gorman
2009-02-22 23:17 ` [PATCH 07/20] Simplify the check on whether cpusets are a factor or not Mel Gorman
2009-02-23 7:14 ` Pekka J Enberg
2009-02-23 9:07 ` Peter Zijlstra
2009-02-23 9:13 ` Pekka Enberg
2009-02-23 11:39 ` Mel Gorman
2009-02-23 13:19 ` Pekka Enberg
2009-02-23 9:14 ` Li Zefan
2009-02-22 23:17 ` [PATCH 08/20] Move check for disabled anti-fragmentation out of fastpath Mel Gorman
2009-02-22 23:17 ` [PATCH 09/20] Calculate the preferred zone for allocation only once Mel Gorman
2009-02-22 23:17 ` [PATCH 10/20] Calculate the migratetype " Mel Gorman
2009-02-22 23:17 ` [PATCH 11/20] Inline get_page_from_freelist() in the fast-path Mel Gorman
2009-02-23 7:21 ` Pekka Enberg
2009-02-23 11:42 ` Mel Gorman
2009-02-23 15:32 ` Nick Piggin
2009-02-24 13:32 ` Mel Gorman
2009-02-24 14:08 ` Nick Piggin
2009-02-24 15:03 ` Mel Gorman
2009-02-22 23:17 ` [PATCH 12/20] Inline __rmqueue_smallest() Mel Gorman
2009-02-22 23:17 ` [PATCH 13/20] Inline buffered_rmqueue() Mel Gorman
2009-02-23 7:24 ` Pekka Enberg
2009-02-23 11:44 ` Mel Gorman
2009-02-22 23:17 ` [PATCH 14/20] Do not call get_pageblock_migratetype() more than necessary Mel Gorman
2009-02-22 23:17 ` [PATCH 15/20] Do not disable interrupts in free_page_mlock() Mel Gorman
2009-02-23 9:19 ` Peter Zijlstra
2009-02-23 12:23 ` Mel Gorman
2009-02-23 12:44 ` Peter Zijlstra
2009-02-23 14:25 ` Mel Gorman
2009-02-22 23:17 ` [PATCH 16/20] Do not setup zonelist cache when there is only one node Mel Gorman
2009-02-22 23:17 ` [PATCH 17/20] Do not double sanity check page attributes during allocation Mel Gorman
2009-02-22 23:17 ` [PATCH 18/20] Split per-cpu list into one-list-per-migrate-type Mel Gorman
2009-02-22 23:17 ` [PATCH 19/20] Batch free pages from migratetype per-cpu lists Mel Gorman
2009-02-22 23:17 ` [PATCH 20/20] Get rid of the concept of hot/cold page freeing Mel Gorman
2009-02-23 9:37 ` Andrew Morton
2009-02-23 23:30 ` Mel Gorman
2009-02-23 23:53 ` Andrew Morton
2009-02-24 11:51 ` Mel Gorman
2009-02-25 0:01 ` Andrew Morton
2009-02-25 16:01 ` Mel Gorman
2009-02-25 16:19 ` Andrew Morton
2009-02-26 16:37 ` Mel Gorman
2009-02-26 17:00 ` Christoph Lameter
2009-02-26 17:15 ` Mel Gorman
2009-02-26 17:30 ` Christoph Lameter
2009-02-27 11:33 ` Nick Piggin
2009-02-27 15:40 ` Christoph Lameter
2009-03-03 13:52 ` Mel Gorman
2009-03-03 18:53 ` Christoph Lameter
2009-02-27 11:38 ` Nick Piggin
2009-03-01 10:37 ` KOSAKI Motohiro
2009-02-25 18:33 ` Christoph Lameter
2009-02-22 23:57 ` [RFC PATCH 00/20] Cleanup and optimise the page allocator Andi Kleen
2009-02-23 12:34 ` Mel Gorman
2009-02-23 15:34 ` [RFC PATCH 00/20] Cleanup and optimise the page allocato Christoph Lameter
2009-02-23 0:02 ` [RFC PATCH 00/20] Cleanup and optimise the page allocator Andi Kleen
2009-02-23 14:32 ` Mel Gorman [this message]
2009-02-23 17:49 ` Andi Kleen
2009-02-24 14:32 ` Mel Gorman
2009-02-23 7:29 ` Pekka Enberg
2009-02-23 8:34 ` Zhang, Yanmin
2009-02-23 9:10 ` KOSAKI Motohiro
2009-02-23 11:55 ` [PATCH] mm: gfp_to_alloc_flags() Peter Zijlstra
2009-02-23 14:00 ` Pekka Enberg
2009-02-23 18:17 ` Mel Gorman
2009-02-23 20:09 ` Peter Zijlstra
2009-02-23 22:59 ` Andrew Morton
2009-02-24 8:59 ` Peter Zijlstra
2009-02-23 14:38 ` [RFC PATCH 00/20] Cleanup and optimise the page allocator Christoph Lameter
2009-02-23 14:46 ` Nick Piggin
2009-02-23 15:00 ` Mel Gorman
2009-02-23 15:22 ` Nick Piggin
2009-02-23 20:26 ` Mel Gorman
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