[gpfsug-discuss] frequent OOM killer due to high memory usage of mmfsd

[Christoph Martin]

Hi all,

on a three node GPFS cluster with CES enabled and AFM-DR mirroring to a 
second cluster we see frequent OOM killer events due to a constantly 
growing mmfsd.
The machines have 256G memory. The pagepool is configured to 16G.
The GPFS version is 5.1.6-1.
After a restart mmfsd rapidly grows to about 100G usage and grows over 
some days up to 250G virtual and 220G physical memory usage.
OOMkiller tries kill process like pmcollector or others and sometime 
kills mmfsd.

Does anybody see a similar behavior?
Any guess what could help with this problem?

Regards
Christoph Martin

-- 
Christoph Martin
Zentrum für Datenverarbeitung (ZDV)
Leiter Unix & Cloud

Johannes Gutenberg-Universität Mainz
Anselm Franz von Bentzel-Weg 12, 55128 Mainz
Tel: +49 6131 39 26337
martin at uni-mainz.de
www.zdv.uni-mainz.de

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