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Samba file lock requests take a long time to be granted causing slowness

This document (7006616) is provided subject to the disclaimer at the end of this document.

Environment

SUSE Linux Enterprise Server 11 Service Pack 1

Situation

Applications that access files on a Samba share and ask for file locks are slow.

Resolution

If the Samba Op-lock code is set to do a delay before granting a lock you can see this issue.
In testing the following setting in the smb.conf file a 9.9 second delay was seen.

oplock break wait time = 10000

The default is:
oplock break wait time =0

Here is what is says in the smb.conf file with regards to this parameter.

Warning

DO NOT CHANGE THIS PARAMETER UNLESS YOU HAVE READ AND UNDERSTOOD THE SAMBA OPLOCK CODE.

Disclaimer

This Support Knowledgebase provides a valuable tool for NetIQ/Novell/SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.

  • Document ID:7006616
  • Creation Date:11-AUG-10
  • Modified Date:27-APR-12
    • SUSESUSE Linux Enterprise Server

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