Re: process hangs on do_exit when oom happens
From: Michal Hocko <hidden>
Date: 2012-10-23 10:15:05
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linux-mm, linux-mmc, lkml
On Tue 23-10-12 18:10:33, Qiang Gao wrote:
On Tue, Oct 23, 2012 at 5:50 PM, Michal Hocko [off-list ref] wrote:quoted
On Tue 23-10-12 15:18:48, Qiang Gao wrote:quoted
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.quoted
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