K 10
svn:author
V 3
mav
K 8
svn:date
V 27
2014-01-04T23:35:34.069103Z
K 7
svn:log
V 499
MFC r258336:
Implement soft pressure on UMA cache bucket sizes.

Every time system detects low memory condition decrease bucket sizes for
each zone by one item.  As result, higher memory pressure will push to
smaller bucket sizes and so smaller per-CPU caches and so more efficient
memory use.

Before this change there was no force to oppose buckets growth as result
of practically inevitable zone lock conflicts, and after some run time
per-CPU caches could consume enough RAM to kill the system.

END