When I've had to determine what job(s) have caused a large CPU increase over an interval I've used the SMF type 30 interval records. If you have Barry Merrill's MXG the information from them is in the SMFINTRV dataset. By using them you can limit the analysis to a short interval rather than over the full time of the job. Of course if you talking about several days of data it would be a lot of information.
Tom Kelman Commerce Bank of Kansas City (816) 760-7632 > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On > Behalf Of Jon Brock > Sent: Friday, May 09, 2008 10:06 AM > To: [email protected] > Subject: Performance report help > > We have a mystery that needs to be solved, and I am having trouble > coming up with a report that would help me do it. Here are the > particulars along with a couple of questions: > > Our CPU usage had been trending upward -- as it generally does -- for > several weeks, when we finally started hitting the wall hard during > first shift. CICS transaction times were starting to elongate, batch > jobs were taking much, much longer to run than usual, etc. We went a > couple of weeks trying to mitigate things as much as possible, when > suddenly, for no reason that we could detect, system usage dropped one > day and we have been OK ever since. Naturally, upon inquiring we found > that no one had done anything. > > Right. > > Anyway, I am trying to create a report detailing CPU usage by job for > several of our heavy hitters during the days prior to the big drop. We > have both RMF and TMON, but I am having little luck with either of them. > > > For RMF, it appears that SMF type 79 records might contain what I need, > but those appear to only be cut when RMF II is turned on, and we do not > have RMF II activated on a regular basis. > > For TMON, it appears that JD (Job Delta, IIRC) records would have what > we need, but, again, they are not generated on a regular basis. > > Questions: > 1) Are there other SMF records that could tell me what I want to > know? > 2) Are there other TMON records that could tell me? > 3) For those of you running RMF, do you have RMF II sessions > running at all times? If so, does it consume a lot of overhead? > 4) For those of you running TMON, do you cut JD records as a > usual thing? If so, how much does it add to your TMON overhead? > > > > Thanks, > Jon > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO > Search the archives at http://bama.ua.edu/archives/ibm-main.html > ***************************************************************************** If you wish to communicate securely with Commerce Bank and its affiliates, you must log into your account under Online Services at http://www.commercebank.com or use the Commerce Bank Secure Email Message Center at https://securemail.commercebank.com NOTICE: This electronic mail message and any attached files are confidential. The information is exclusively for the use of the individual or entity intended as the recipient. If you are not the intended recipient, any use, copying, printing, reviewing, retention, disclosure, distribution or forwarding of the message or any attached file is not authorized and is strictly prohibited. If you have received this electronic mail message in error, please advise the sender by reply electronic mail immediately and permanently delete the original transmission, any attachments and any copies of this message from your computer system. ***************************************************************************** ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
