On 6 September 2016 at 15:07, Mike Galbraith <umgwanakikb...@gmail.com> wrote: > On Tue, 2016-09-06 at 15:01 +0200, Vincent Guittot wrote: >> Le Monday 05 Sep 2016 à 18:26:53 (+0200), Mike Galbraith a écrit : >> > Coming back to this, how about this instead, only increase the group >> > imbalance threshold when sd_llc_size == 2. Newer L3 equipped >> > processors then aren't affected. >> > >> >> Not sure that all systems with sd_llc_size == 2 wants this behavior. >> >> Why not adding a sched_feature for changing the 2nd half of the test >> for some systems ? > > Because users won't know, and shouldn't need to know that they need to > flip that switch.
fair enough so how can we detect this specific system configuration ? sd_llc_size == 2 is not enough IMHO > > -Mike
