[Lustre-discuss] Out of Memory on MDS

[Roger Spellman]

I have an MDS that is crashing with out-of-memory.

 

Prior to the crash, I started collecting /proc/slabinfo.  I see that
ldlm_locks is up to 4,500,000, and each one is 512 bytes, for a total of
2.2GB, which is more than half my RAM.

 

Is there a way to limit this?

 

Other heavy memory users are ldisk_inode_cache (421 MB) and
ldlm_resources (137 MB).  Is there a way to limit these too?

 

Thanks.

 

Roger Spellman

Staff Engineer

Terascala, Inc.

508-588-1501

www.terascala.com http://www.terascala.com/

 

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