On Fri 13-05-16 16:35:20, Sebastian Frias wrote: > Hi Austin, > > On 05/13/2016 03:51 PM, Austin S. Hemmelgarn wrote: > > On 2016-05-13 09:32, Sebastian Frias wrote: > >> I didn't see that in Documentation/vm/overcommit-accounting or am I > >> looking in the wrong place? > > It's controlled by a sysctl value, so it's listed in > > Documentation/sysctl/vm.txt > > The relevant sysctl is vm.oom_kill_allocating_task > > Thanks, I just read that. > Does not look like a replacement for overcommit=never though.
No this is just an OOM strategy. I wouldn't recommend it though because the behavior might be really time dependant - unlike the regular OOM killer strategy to select the largest memory consumer. And again, overcommit=never doesn't imply no-OOM. It just makes it less likely. The kernel can consume quite some unreclaimable memory as well. -- Michal Hocko SUSE Labs