On Tue 23-10-12 18:10:33, Qiang Gao wrote: > On Tue, Oct 23, 2012 at 5:50 PM, Michal Hocko <mhocko@xxxxxxx> wrote: > > On Tue 23-10-12 15:18:48, Qiang Gao wrote: > >> This process was moved to RT-priority queue when global oom-killer > >> happened to boost the recovery of the system.. > > > > Who did that? oom killer doesn't boost the priority (scheduling class) > > AFAIK. > > > >> but it wasn't get properily dealt with. I still have no idea why where > >> the problem is .. > > > > Well your configuration says that there is no runtime reserved for the > > group. > > Please refer to Documentation/scheduler/sched-rt-group.txt for more > > information. > > [...] > maybe this is not a upstream-kernel bug. the centos/redhat kernel > would boost the process to RT prio when the process was selected > by oom-killer. This still looks like your cpu controller is misconfigured. Even if the task is promoted to be realtime. -- Michal Hocko SUSE Labs -- 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>