(6/14/12 12:02 PM), Bartlomiej Zolnierkiewicz wrote:
From: Bartlomiej Zolnierkiewicz<b.zolnierkie@xxxxxxxxxxx> 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. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>