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SubjectRe: [PATCH 0/4] enhance compaction success rate
On 12/08/2014 08:16 AM, Joonsoo Kim wrote:
> 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

Did you test Patch-2 separately? Any difference to Patch 1?

> 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(-)
>



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