This patchset aims at increase of compaction success rate. Changes are related to compaction finish condition and freepage isolation condition. >From these changes, I did stress highalloc test in mmtests with nonmovable order 7 allocation configuration, and success rate (%) at phase 1 are, Base Patch-1 Patch-3 Patch-4 55.00 57.00 62.67 64.00 And, compaction success rate (%) on same test are, Base Patch-1 Patch-3 Patch-4 18.47 28.94 35.13 41.50 This patchset is based on my tracepoint update on compaction. https://lkml.org/lkml/2014/12/3/71 Joonsoo Kim (4): mm/compaction: fix wrong order check in compact_finished() mm/page_alloc: expands broken freepage to proper buddy list when steal mm/compaction: enhance compaction finish condition mm/compaction: stop the isolation when we isolate enough freepage include/linux/mmzone.h | 3 ++ include/trace/events/kmem.h | 7 +++-- mm/compaction.c | 48 ++++++++++++++++++++++------ mm/internal.h | 1 + mm/page_alloc.c | 73 +++++++++++++++++++++++++------------------ 5 files changed, 89 insertions(+), 43 deletions(-) -- 1.7.9.5 -- 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>