On 06/23/2012 07:04 AM, Johannes Weiner wrote:
I think we need to go back to protecting mapped pages based on how much of reclaimable memory they make up, one way or another. Minchan suggested recently to have a separate LRU list for easily reclaimable pages. If we balance the lists according to relative size, we have pressure on mapped pages dictated by availability of clean cache that is easier to reclaim. Rik, Minchan, what do you think?
I believe the main reclaim balancings should probably be "cgroup vs cgroup", "anon vs file" and "active vs inactive". However, there is some room for sorting within the inactive file list, to ensure we actually have a bunch of easily reclaimable pages available at all times. This would not work on the anon side, because there are workloads that fill up 95% of memory with working set, but on the file side it could actually solve some real issues. -- All rights reversed -- 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>