On Thu 22-11-12 10:36:18, azurIt wrote:
[...]

I can look also to the data of 'freezed' proces if you need it but i
will have to wait until problem occurs again.

The main problem is that when this problem happens, it's NOT resolved
automatically by kernel/OOM and user of cgroup, where it happend, has
non-working services until i kill his processes by hand. I'm sure
that all 'freezed' processes are taking very much CPU because also
server load goes really high - next time i will make a screenshot of
htop. I really wonder why OOM is __sometimes__ not resolving this
(it's usually is, only sometimes not).

What does your kernel log says while this is happening. Are there any
memcg OOM messages showing up?
-- 
Michal Hocko
SUSE Labs

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