We had upgraded from OEL5.3 to OEL5.11 on node 3 of the 3 nodes and converted the multipathing from EMC Powerpath to native dm-multipathing also on node 3 only, I know too much at once. We had tested this on a 2 node dev cluster and did not see this. We see the high load behavior on 2 of the 3 simultaneously(nodes 1 and 3). We did a packet capture of port 7777 and see a large amount of traffic from the two busy nodes with node 2.There are 19 file systems and the ocfs2dc pid is associated with the first file system from what we can tell. What else can we look at? Thanks, Mike Confidentiality Statement: This email/fax, including attachments, may include confidential and/or proprietary information and may be used only by the person or entity to which it is addressed. If the reader of this email/fax is not the intended recipient or his or her agent, the reader is hereby notified that any dissemination, distribution or copying of this email/fax is prohibited. If you have received this email/fax in error, please notify the sender by replying to this message and deleting this email or destroying this facsimile immediately.