Messages in this thread | | | Date | Fri, 18 Sep 2015 17:07:49 -0500 (CDT) | From | Christoph Lameter <> | Subject | Re: [PATCH] mm/oom_kill.c: don't kill TASK_UNINTERRUPTIBLE tasks |
| |
On Fri, 18 Sep 2015, Kyle Walker wrote:
> I do like the idea of not stalling completely in an oom just because the > first attempt didn't go so well. Is there any possibility of simply having > our cake and eating it too? Specifically, omitting TASK_UNINTERRUPTIBLE > tasks > as low-hanging fruit and allowing the oom to continue in the event that the > first attempt stalls?
TASK_UNINTERRUPTIBLE tasks should not be sleeping that long and they *should react* in a reasonable timeframe. There is an alternative API for those cases that cannot. Typically this is a write that is stalling. If we kill the process then its pointless to wait on the write to complete. See
https://lwn.net/Articles/288056/
http://www.ibm.com/developerworks/library/l-task-killable/
| |