Thomas, How long has your server been up since a halt of TSM. I am on OS390 TSM Version 4, Release 2, Level 2.0 and I find that it does get slower the longer I leave it between a recycle. So if its been a few weeks since your last, I would do that, as soon as you can.
John Thomas Denier <[EMAIL PROTECTED]> on 12/17/2002 05:18:23 PM Please respond to "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] cc: (bcc: John Naylor/HAV/SSE) Subject: Performance pathology We are running a TSM 4.2.1.9 server under OS/390. We are experiencing serious performance problems, and I have not been able to find any clear explanation. We currently have two late-running client backup sessions and a backup stgpool process running. Neither client backup uses the storage pools involved in the storage pool backup. The storage pool backup is sometimes freezing for tens of seconds at a time with 'query process' commands showing no current file and no increase in file or byte counts. The buffer pool hit rate is around 97.7 percent, which is not particularly good but does not explain tens of seconds of inactivity. The mainframe performance analysts insist that TSM is spending small percentages of the time waiting for processor capacity, I/O operations, or paging operations. Where do I start looking for the underlying cause of the problems? ********************************************************************** The information in this E-Mail is confidential and may be legally privileged. It may not represent the views of Scottish and Southern Energy plc. It is intended solely for the addressees. Access to this E-Mail by anyone else is unauthorised. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. Any unauthorised recipient should advise the sender immediately of the error in transmission. Scottish Hydro-Electric, Southern Electric, SWALEC and S+S are trading names of the Scottish and Southern Energy Group. **********************************************************************