Hello all,
I will really appreciate assistance regarding the following issue:
We have a product deployed on CentosOS 6.9 with OpenVZ.
Machine RAM size - 32 GB + Swap file (16 GB).
The following described issue was reproduced on the OpenVZ kernels:
2.6.32-042stab125.1 , 2.6.32-042stab123.9 , 2.6.32-042stab123.2,
2.6.32-042stab120.11
For debugging purpose the single container on the host was stopped.
We observed that OOM Killer is invoked whenever host RAM usage without buffers
reach ~13 GB:
Free command output (few seconds before OOM killer invoked):
total used free shared buffers cached
Mem: 32793080 23197272 9595808 920 135992 10276712
-/+ buffers/cache: 12784568 20008512
Swap: 16465916 0 16465916
On the message buffer, we see that the machine memory state just before the OOM
killer invocation is:
RAM: 2097074 / 2097152 [1] SWAP: 1048576 / 1048576 [1] KMEM: 227942400 /
Again , machine has 32 GB, only 13 GB is used, no swap usage - so where those
wrong values came
from and why OOM killer is invoked in this stage?
The issue is reproducible with similar results every time.
Is it a known issue ?
Should I open a defect for this?
Also - is there a way to totally disable the OOM killer?
I'll be glad to provide any required detail (like sysctl -a output)
Regards,
Danny
[Radware]
Danny Gurman
Dev Lead, APSolute Vision
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