[Samba] smbd is the source of usually high CPU usage

Sean Angley sangley at ca.ibm.com
Mon Oct 28 23:37:23 GMT 2002

We have installed Samba 2.2.5 under SuSE Linux (kernel 2.4.7) on a z/800
(IBM mainframe) and are witnessing usually high processor usage. The high
usage is associated with one of the clients.  The client runs a script on
an OS/2 machine that continuously works its way through a long list of
small files one by one.  The list of files is so long that the script may
run for 5 or 6 hours.  The script copies a small file from the server to
workstation, updates the file on the workstation, writes the revised file
back to the server from the workstation.

When this script runs, we see processor utilization soar to values above
75%. Is there a penalty incurred when Samba is used in batch for intensive
file transfer?

Does anyone has a good reference to tuning Samba performance?

  Sean Angley, P.Eng.
  sangley at ca.ibm.com
    Host Server Support
    ISM Canada
    IBM Global Services
    One Research Drive
    Regina, CANADA
   S4S 7H1

PHONE:      (306) 790-5199
FAX:            (306) 790-5070

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