SLES 11 SP2 CIFS server on VM host slow file access

  • 7016012
  • 19-Dec-2014
  • 19-Dec-2014

Environment

SLES 11 SP2
Novell Open Enterprise Server 11 (OES 11) Linux Support Pack 1

Situation

Virtual server running CIFS had normal file access times until it was moved to a different VM host.

After the move file copies from the CIFS server to a standalone workstation were fine but copies up to the CIFS server were slow.

Resolution

Disabling the Large Receive Offload (LRO) setting in VMWare as discussed in the VMWare document below addressed the issue on the new VM host.  Speeds to and from the server returned to normal.

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2055140

Another useful VMWare LRO document
http://kb.vmware.com/selfservice/search.do?cmd=displayKC&docType=kc&docTypeID=DT_KB_1_1&externalId=1027511


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