On Tue, 6 Apr 2010 17:05:59 -0700 Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > On Fri, 2 Apr 2010 17:02:44 +0100 > Mel Gorman <mel@xxxxxxxxx> wrote: > > > This patch adds a per-node sysfs file called compact. When the file is > > written to, each zone in that node is compacted. The intention that this > > would be used by something like a job scheduler in a batch system before > > a job starts so that the job can allocate the maximum number of > > hugepages without significant start-up cost. > > Would it make more sense if this was a per-memcg thing rather than a > per-node thing? memcg doesn't have any relationship with placement of memory (now). It's just controls the amount of memory. So, memcg has no relationship with compaction. A cgroup which controls placement of memory is cpuset. One idea is per cpuset. But per-node seems ok. Thanks, -Kame -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>