Henrique Fernandes put forth on 1/20/2011 11:55 AM:
Even the storage system is not SUN those ocfs2 servers are connect via iSCSI from the storage with ocfs2 in virtual machine
Please provide a web link to the iSCSI storage array product you are using, and tell us how many 1GbE ports you are link aggregating to the switch.
Also, are you using Oracle OCFS2 or IBM GPFS? You mentioned both. Considering you are experiencing severe performance issues with metadata operations due to the distributed lock manager...
Have you considered SGI CXFS? It's the fastest cluster FS on the planet by an order of magnitude. It uses dedicated metadata servers instead of a DLM, which is why it's so fast. Directory traversal operations would be orders of magnitude faster than what you have now.
http://en.wikipedia.org/wiki/CXFS http://www.sgi.com/products/storage/software/cxfs.html
-- Stan