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Re: [PATCH 12/14] Add a tunable that decides when memory should be compacted and when it should be reclaimed

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From: Andrew Morton
Subject: Re: [PATCH 12/14] Add a tunable that decides when memory should be compacted and when it should be reclaimed
Date: Tuesday, April 6, 2010 - 5:06 pm

On Fri,  2 Apr 2010 17:02:46 +0100
Mel Gorman <mel@csn.ul.ie> wrote:


Was this the most robust, reliable, no-2am-phone-calls thing we could
have done?

What about, say, just doing a bit of both until something worked?  For
extra smarts we could remember what worked best last time, and make
ourselves more likely to try that next time.

Or whatever, but extfrag_threshold must die!  And replacing it with a
hardwired constant doesn't count ;)

--
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[PATCH 0/14] Memory Compaction v7, Mel Gorman, (Fri Apr 2, 9:02 am)
[PATCH 03/14] mm: Share the anon_vma ref counts between KS ..., Mel Gorman, (Fri Apr 2, 9:02 am)
[PATCH 04/14] Allow CONFIG_MIGRATION to be set without CON ..., Mel Gorman, (Fri Apr 2, 9:02 am)
[PATCH 05/14] Export unusable free space index via /proc/u ..., Mel Gorman, (Fri Apr 2, 9:02 am)
[PATCH 06/14] Export fragmentation index via /proc/extfrag ..., Mel Gorman, (Fri Apr 2, 9:02 am)
[PATCH 07/14] Move definition for LRU isolation modes to a ..., Mel Gorman, (Fri Apr 2, 9:02 am)
[PATCH 08/14] Memory compaction core, Mel Gorman, (Fri Apr 2, 9:02 am)
[PATCH 09/14] Add /proc trigger for memory compaction, Mel Gorman, (Fri Apr 2, 9:02 am)
[PATCH 10/14] Add /sys trigger for per-node memory compaction, Mel Gorman, (Fri Apr 2, 9:02 am)
[PATCH 11/14] Direct compact when a high-order allocation ..., Mel Gorman, (Fri Apr 2, 9:02 am)
[PATCH 12/14] Add a tunable that decides when memory shoul ..., Mel Gorman, (Fri Apr 2, 9:02 am)
[PATCH 13/14] Do not compact within a preferred zone after ..., Mel Gorman, (Fri Apr 2, 9:02 am)
[PATCH 14/14] mm,migration: Allow the migration of PageSwa ..., Mel Gorman, (Fri Apr 2, 9:02 am)
Re: [PATCH 14/14] mm,migration: Allow the migration of Pag ..., KAMEZAWA Hiroyuki, (Mon Apr 5, 11:54 pm)
[No subject], Tarkan Erimer, (Tue Apr 6, 7:47 am)
[No subject], Mel Gorman, (Tue Apr 6, 8:00 am)
[No subject], Tarkan Erimer, (Tue Apr 6, 8:03 am)
[No subject], Minchan Kim, (Tue Apr 6, 8:37 am)
Re: [PATCH 10/14] Add /sys trigger for per-node memory com ..., Andrew Morton, (Tue Apr 6, 2:56 pm)
Re: [PATCH 03/14] mm: Share the anon_vma ref counts betwee ..., Andrew Morton, (Tue Apr 6, 5:05 pm)
Re: [PATCH 04/14] Allow CONFIG_MIGRATION to be set without ..., Andrew Morton, (Tue Apr 6, 5:05 pm)
Re: [PATCH 05/14] Export unusable free space index via /pr ..., Andrew Morton, (Tue Apr 6, 5:05 pm)
Re: [PATCH 06/14] Export fragmentation index via /proc/ext ..., Andrew Morton, (Tue Apr 6, 5:05 pm)
Re: [PATCH 08/14] Memory compaction core, Andrew Morton, (Tue Apr 6, 5:05 pm)
Re: [PATCH 09/14] Add /proc trigger for memory compaction, Andrew Morton, (Tue Apr 6, 5:05 pm)
Re: [PATCH 10/14] Add /sys trigger for per-node memory com ..., Andrew Morton, (Tue Apr 6, 5:05 pm)
Re: [PATCH 11/14] Direct compact when a high-order allocat ..., Andrew Morton, (Tue Apr 6, 5:06 pm)
Re: [PATCH 12/14] Add a tunable that decides when memory s ..., Andrew Morton, (Tue Apr 6, 5:06 pm)
Re: [PATCH 13/14] Do not compact within a preferred zone a ..., Andrew Morton, (Tue Apr 6, 5:06 pm)
Re: [PATCH 14/14] mm,migration: Allow the migration of Pag ..., Andrew Morton, (Tue Apr 6, 5:06 pm)
Re: [PATCH 03/14] mm: Share the anon_vma ref counts betwee ..., Rik van Riel, (Tue Apr 6, 5:10 pm)
Re: [PATCH 10/14] Add /sys trigger for per-node memory com ..., KAMEZAWA Hiroyuki, (Tue Apr 6, 5:31 pm)
Re: [PATCH 13/14] Do not compact within a preferred zone a ..., Andrea Arcangeli, (Tue Apr 6, 5:55 pm)
Re: [PATCH 10/14] Add /sys trigger for per-node memory com ..., KAMEZAWA Hiroyuki, (Tue Apr 6, 6:19 pm)
Re: [PATCH 03/14] mm: Share the anon_vma ref counts betwee ..., Mel Gorman, (Wed Apr 7, 3:01 am)
Re: [PATCH 04/14] Allow CONFIG_MIGRATION to be set without ..., Mel Gorman, (Wed Apr 7, 3:22 am)
Re: [PATCH 05/14] Export unusable free space index via /pr ..., Mel Gorman, (Wed Apr 7, 3:35 am)
Re: [PATCH 06/14] Export fragmentation index via /proc/ext ..., Mel Gorman, (Wed Apr 7, 3:46 am)
Re: [PATCH 08/14] Memory compaction core, Mel Gorman, (Wed Apr 7, 8:21 am)
Re: [PATCH 09/14] Add /proc trigger for memory compaction, Mel Gorman, (Wed Apr 7, 8:39 am)
Re: [PATCH 10/14] Add /sys trigger for per-node memory com ..., Mel Gorman, (Wed Apr 7, 8:42 am)
Re: [PATCH 11/14] Direct compact when a high-order allocat ..., Mel Gorman, (Wed Apr 7, 9:06 am)
Re: [PATCH 12/14] Add a tunable that decides when memory s ..., Mel Gorman, (Wed Apr 7, 9:11 am)
Re: [PATCH 13/14] Do not compact within a preferred zone a ..., Mel Gorman, (Wed Apr 7, 9:32 am)
Re: [PATCH 14/14] mm,migration: Allow the migration of Pag ..., Mel Gorman, (Wed Apr 7, 9:49 am)
Re: [PATCH 09/14] Add /proc trigger for memory compaction, Mel Gorman, (Wed Apr 7, 11:27 am)
Re: [PATCH 11/14] Direct compact when a high-order allocat ..., Mel Gorman, (Wed Apr 7, 11:29 am)
Re: [PATCH 08/14] Memory compaction core, Mel Gorman, (Thu Apr 8, 9:59 am)
Re: [PATCH 08/14] Memory compaction core, Andrea Arcangeli, (Thu Apr 8, 10:06 am)
Re: [PATCH 05/14] Export unusable free space index via /pr ..., Mel Gorman, (Tue Apr 13, 5:42 am)
Re: [PATCH 06/14] Export fragmentation index via /proc/ext ..., Mel Gorman, (Tue Apr 13, 5:43 am)