basti wrote:
>>> Since a few days we had problems with the Linux OOM-Killer.
>>> Some simple query that normally take around 6-7 minutes now takes 5 hours.
>>> We did not change any configuration values the last days.
>>>
>>> First of all I have set
>>>
>>> vm.overcommit_memory=2
>>> vm.overcommit_ratio=80
> Swap is disabled.
> free -m
> total used free shared buffers cached
> Mem: 32215 16163 16051 0 40 14842
> -/+ buffers/cache: 1281 30934
> Swap: 0 0 0
That together means that you cannot use more than 80% of your
RAM. Are you hitting that limit?
See the description of overcommit_ratio in
https://www.kernel.org/doc/Documentation/sysctl/vm.txt
I would definitely add some swap.
Yours,
Laurenz Albe
