On Wed, 20 Apr 2011 23:59:52 -0700 Ying Han <yinghan@xxxxxxxxxx> wrote: > On Wed, Apr 20, 2011 at 11:38 PM, KAMEZAWA Hiroyuki < > kamezawa.hiroyu@xxxxxxxxxxxxxx> wrote: > > > On Wed, 20 Apr 2011 23:11:42 -0700 > > Ying Han <yinghan@xxxxxxxxxx> wrote: > > > > > On Wed, Apr 20, 2011 at 8:48 PM, KAMEZAWA Hiroyuki < > > > kamezawa.hiroyu@xxxxxxxxxxxxxx> wrote: > n general, memcg-kswapd can reduce memory down to high watermak only when > > the system is not busy. So, this logic tries to remove more memory from busy > > cgroup to reduce 'hit limit'. > > > > So, the "busy cgroup" here means the memcg has higher (usage - low)? > high < usage < low < limit Yes, if background reclaim wins, usage - high decreases. If tasks on cgroup uses more memory than reclaim, usage - high increases even if background reclaim runs. So, if usage-high is large, cgroup is busy. 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>