Messages in this thread | | | Date | Thu, 14 Jun 2012 12:21:22 -0400 | From | KOSAKI Motohiro <> | Subject | Re: [PATCH 2/2] mm: compaction: add /proc/vmstat entry for rescued MIGRATE_UNMOVABLE pageblocks |
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(6/14/12 12:02 PM), Bartlomiej Zolnierkiewicz wrote: > From: Bartlomiej Zolnierkiewicz<b.zolnierkie@samsung.com> > Subject: [PATCH] mm: compaction: add /proc/vmstat entry for rescued MIGRATE_UNMOVABLE pageblocks > > compact_rescued_unmovable_blocks shows the number of MIGRATE_UNMOVABLE > pageblocks converted back to MIGRATE_MOVABLE type by the memory compaction > code. Non-zero values indicate that large kernel-originated allocations > of MIGRATE_UNMOVABLE type happen in the system and need special handling > from the memory compaction code. > > This new vmstat entry is optional but useful for development and understanding > the system.
This description don't describe why admin need this stat and how to use it.
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