In SYSTEM Service Class (for several customers) I think I'm seeing Master Scheduler being said to acquire more storage service over time. Not sure if this is what the OP meant by SYSSTC or not. (Probably not).
In my case I suspect this is an anchor point for something Common or Shared above the Bar. Instrumentation I'm using is SMF 30 Interval (2,3) records. And I agree you can control what goes into SYSSTC and can define Report Classes to "narrow the doubt" if you don't have SMF 30(2,3) to work with. Actually for NON-SWAPPABLE address spaces a Report Class would be much more accurate for REAL storage usage. Cheers, Martin Martin Packer, zChampion, Principal Systems Investigator, Worldwide Banking Center of Excellence, IBM +44-7802-245-584 email: martin_pac...@uk.ibm.com Twitter / Facebook IDs: MartinPacker Blog: https://www.ibm.com/developerworks/mydeveloperworks/blogs/MartinPacker From: Shane Ginnane <ibm-m...@tpg.com.au> To: IBM-MAIN@LISTSERV.UA.EDU Date: 27/05/2015 04:30 Subject: Re: Slow storage creep in SYSTEM.SYSSTC Sent by: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Tue, 26 May 2015 23:25:42 +0000, Gibney, David wrote: >... I neither have nor really can control what falls into SYSSTC. It's all z/OS. You can, and probably should at least look at some of your heavy hitters. >Just tossing it out here for thought on identifying the guilty software? Grab a couple of (system) dumps a couple of weeks apart. Under IPCS run the VSMDATA with OWNCOMM SUMMARY. The Diag Reference has examples of what you'll get. You may be able to see from a quick eyeball where it's going. You can run a getmain/freemain trace, but you really don't want to go there. Running GTF for weeks, then trying to process the output just ain't funny. All else fails, flick me a return business class air ticket, and I'll come have a look. Washington can't be too bad this time of year .... ;-) Shane ... (all the above presumes you have the DIAGxx member set up already) ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
