From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
To: Mel Gorman <mel@csn.ul.ie>
Cc: linux-mm@kvack.org, mingo@elte.hu, linux-kernel@vger.kernel.org,
nickpiggin@yahoo.com.au, lhms-devel@lists.sourceforge.net
Subject: Re: [PATCH 3/5] Light Fragmentation Avoidance V20: 003_fragcore
Date: Wed, 16 Nov 2005 11:35:17 +0900 [thread overview]
Message-ID: <437A9AE5.8070001@jp.fujitsu.com> (raw)
In-Reply-To: <20051115165002.21980.14423.sendpatchset@skynet.csn.ul.ie>
Hi,
> +/* Remove an element from the buddy allocator from the fallback list */
> +static struct page *__rmqueue_fallback(struct zone *zone, int order,
> + int alloctype)
Should we avoid this fallback as much as possible ?
I think this is a weak point of this approach.
> + /*
> + * If breaking a large block of pages, place the buddies
> + * on the preferred allocation list
> + */
> + if (unlikely(current_order >= MAX_ORDER / 2)) {
> + alloctype = !alloctype;
> + change_pageblock_type(zone, page);
> + area = &zone->free_area_lists[alloctype][current_order];
> + }
Changing RCLM_NORCLM to RLCM_EASY is okay ??
If so, I think adding similar code to free_pages_bulk() is better.
-- Kame
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next prev parent reply other threads:[~2005-11-16 2:35 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-15 16:49 [PATCH 0/5] Light Fragmentation Avoidance V20 Mel Gorman
2005-11-15 16:49 ` [PATCH 1/5] Light Fragmentation Avoidance V20: 001_antidefrag_flags Mel Gorman
2005-11-15 23:00 ` Paul Jackson
2005-11-15 23:04 ` Randy.Dunlap
2005-11-16 1:36 ` Mel Gorman
2005-11-20 14:45 ` [Lhms-devel] " Paul Jackson
2005-11-15 16:49 ` [PATCH 2/5] Light Fragmentation Avoidance V20: 002_usemap Mel Gorman
2005-11-15 23:36 ` Andi Kleen
2005-11-16 1:43 ` Mel Gorman
2005-11-16 1:52 ` Andi Kleen
2005-11-16 2:07 ` Mel Gorman
2005-11-22 10:13 ` Andy Whitcroft
2005-11-22 10:19 ` Mel Gorman
2005-11-22 10:22 ` Andi Kleen
2005-11-22 10:35 ` Mel Gorman
2005-11-22 10:48 ` KAMEZAWA Hiroyuki
2005-11-22 19:40 ` Mel Gorman
2005-11-22 10:54 ` KAMEZAWA Hiroyuki
2005-11-22 11:10 ` Mel Gorman
2005-11-22 11:35 ` Mel Gorman
2005-11-15 16:50 ` [PATCH 3/5] Light Fragmentation Avoidance V20: 003_fragcore Mel Gorman
2005-11-16 2:35 ` KAMEZAWA Hiroyuki [this message]
2005-11-16 10:42 ` Mel Gorman
2005-11-15 16:50 ` [PATCH 4/5] Light Fragmentation Avoidance V20: 004_percpu Mel Gorman
2005-11-15 23:24 ` Paul Jackson
2005-11-16 1:37 ` Mel Gorman
2005-11-15 16:50 ` [PATCH 5/5] Light Fragmentation Avoidance V20: 005_configurable Mel Gorman
2005-11-15 23:39 ` Andi Kleen
2005-11-16 1:47 ` Mel Gorman
2005-11-15 22:54 ` [PATCH 0/5] Light Fragmentation Avoidance V20 Paul Jackson
2005-11-16 1:34 ` Mel Gorman
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