On Wed, Aug 8, 2012 at 2:45 PM, Rik van Riel <riel@xxxxxxxxxx> wrote: > Instead of doing round robin reclaim over all the cgroups in a zone, we > reclaim from the highest score cgroup first. > > Factors in the scoring are the use ratio of pages in the lruvec > (recent_rotated / recent_scanned), the size of the lru, the recent amount > of pressure applied to each lru, whether the cgroup is over its soft limit > and whether the cgroup has lots of inactive file pages. > > This patch series is on top of a recent mmotm with Ying's memcg softreclaim > patches [2/2] applied. Unfortunately it turns out that that mmmotm tree > with Ying's patches does not compile with CONFIG_MEMCG=y, so I am testing > these patches over the wall untested, as inspiration for others (hi Ying). > > This still suffers from the same scalability issue the current code has, > namely a round robin iteration over all the lruvecs in a zone. We may want > to fix that in the future by sorting the memcgs/lruvecs in some sort of > tree, allowing us to find the high priority ones more easily and doing the > recalculation asynchronously and less often. Thank you Rik for the work ! I haven't got chance to look through it but I will tomorrow :) --Ying -- 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>