Good questions. To try and answer them... 1) Type 30 memory usage - not virtual.
2) I used to not see MSTJCL00 show up as a significant memory item compared to, say, System Logger. Now I see it sometimes over 1GB. 3) I don't know what these 2 customers have done but I vaguely recall the original one's situation as fairly pervasive across their estate. At this stage I'm not, except for perhaps in the original customer's case, calling it in as a problem. I'm more interested in a conclusion like "all common large memory objects' memory usage are recorded in the MSTJCL00 address space number". Or whatever the truth turns out to be. Thanks, 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: Elardus Engelbrecht <elardus.engelbre...@sita.co.za> To: IBM-MAIN@listserv.ua.edu, Date: 09/16/2013 03:01 PM Subject: Re: Memory For MSTJCL00 - Whose Is It? Sent by: IBM Mainframe Discussion List <IBM-MAIN@listserv.ua.edu> Martin Packer wrote: >Almost a year ago in > https://www.ibm.com/developerworks/community/blogs/MartinPacker/entry/bad_data_and_the_subjunctive_mood?lang=en >I talked about seeing large numbers for memory in MSTJCL00. On what are you graph on that web page based? From what memory areas are those workset based? (Pools, private space, below/above the line/etc.) It is not clear to me on what is 'MSTJCL00 Work Set Size' is based and where. >And are YOU seeing large memory numbers? Please define 'large'. This is not I'm trying to be funny, but at what value is 'large' becoming a problem? >I ask because I've seen it again in a customer with z/OS R.11. With or without debugging instructions like those in DIAG statements? Only one LPAR or all or many of them? Just curious if you don't mind please. Groete / Greetings Elardus Engelbrecht ---------------------------------------------------------------------- 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
