On Wed 18-01-12 19:25:27, Sha wrote: [...] > Er... I'm even more confused: mem_cgroup_soft_limit_reclaim indeed > choses the biggest soft-limit excessor first, but in the succeeding reclaim > mem_cgroup_hierarchical_reclaim just selects a child cgroup by css_id mem_cgroup_soft_limit_reclaim picks up the hierarchy root (most excessing one) and mem_cgroup_hierarchical_reclaim reclaims from that subtree). It doesn't care who exceeds the soft limit under that hierarchy it just tries to push the root under its limit as much as it can. This is what Johannes tried to explain in the other email in the thred. > which has nothing to do with soft limit (see mem_cgroup_select_victim). > IMHO, it's not a genuine hierarchical reclaim. It is hierarchical because it iterates over hierarchy it is not and never was recursively soft-hierarchical... -- Michal Hocko SUSE Labs SUSE LINUX s.r.o. Lihovarska 1060/12 190 00 Praha 9 Czech Republic -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>