From: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Hello,
This is a patchset for pro-active compaction to reduce fragmentation.
It is a just RFC patchset so implementation detail isn't good.
I submit this for people who want to check the effect of pro-active
compaction.
Patch 1 ~ 4 introduces new metric for checking fragmentation. I think
that this new metric is useful to check fragmentation state
regardless of usefulness of pro-active compaction. Please let me know
if someone see that this new metric is useful. I'd like to submit it,
separately.
Any feedback is more than welcome.
Thanks.
Joonsoo Kim (5):
mm/vmstat: retrieve suitable free pageblock information just once
mm/vmstat: rename variables/functions about buddyinfo
mm: introduce exponential moving average to unusable free index
mm/vmstat: introduce /proc/fraginfo to get fragmentation stat stably
mm/compaction: run the compaction whenever fragmentation ratio exceeds
the threshold
include/linux/mmzone.h | 3 +
mm/compaction.c | 280 +++++++++++++++++++++++++++++++++++++++++++++++--
mm/internal.h | 21 ++++
mm/page_alloc.c | 33 ++++++
mm/vmstat.c | 101 ++++++++++++------
5 files changed, 397 insertions(+), 41 deletions(-)
--
1.9.1
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