Re: What exactly does SHRD tell me in the IEF032I step end message?
Geez Jim, you been hangin' around Metz too long. :-) -Original Message- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Jim Mulder Sent: Monday, January 26, 2015 1:16 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: What exactly does SHRD tell me in the IEF032I step end message? IEF032I STEP/UTIL/STOP 2015021.1318 CPU: .. VIRT: 9832K SYS: 840K EXT: 1539796K SYS: 18188K ATB- REAL: 716K SLOTS: 32K VIRT- ALLOC: 67M SHRD: 1015808M This tells me that the step has as much as 67M above the bar storage allcated (highwater mark). This was backed by up to 716K of fral frames (also highwater mark). Now here are my questions: a) Does SLOT mean slots on AUX only, or would this include slots on FlashExpress used for paging? The value displayed is RAXHVGAuxSlots * 4 SYS1.MODGEN(IARRAX) RAXHVGAuxSlots DS 0D High water mark RAXHVGAux DS D High water mark for the * number of aux slots and SCM * blocks used to back 64-bit * private storage b) Both REAL and SLOTS are in KiB, not frames and pages, right? Yes. c) What does the SHRD mean? This what the manual says: SHRD: Indicates the maximum megabytes of above the bar shared virtual storage (high-water mark) that were accessable by the step. Do the REAL and SLOTS numbers include the frames/pages from the shared area? No. Jim Mulder z/OS System Test IBM Corp. Poughkeepsie, NY -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: What exactly does SHRD tell me in the IEF032I step end message?
IEF032I STEP/UTIL/STOP 2015021.1318 CPU: .. VIRT: 9832K SYS: 840K EXT: 1539796K SYS: 18188K ATB- REAL: 716K SLOTS: 32K VIRT- ALLOC: 67M SHRD: 1015808M This tells me that the step has as much as 67M above the bar storage allcated (highwater mark). This was backed by up to 716K of fral frames (also highwater mark). Now here are my questions: a) Does SLOT mean slots on AUX only, or would this include slots on FlashExpress used for paging? The value displayed is RAXHVGAuxSlots * 4 SYS1.MODGEN(IARRAX) RAXHVGAuxSlots DS 0D High water mark RAXHVGAux DS D High water mark for the * number of aux slots and SCM * blocks used to back 64-bit * private storage b) Both REAL and SLOTS are in KiB, not frames and pages, right? Yes. c) What does the SHRD mean? This what the manual says: SHRD: Indicates the maximum megabytes of above the bar shared virtual storage (high-water mark) that were accessable by the step. Do the REAL and SLOTS numbers include the frames/pages from the shared area? No. Jim Mulder z/OS System Test IBM Corp. Poughkeepsie, NY -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
What exactly does SHRD tell me in the IEF032I step end message?
I haven't been programming using above the bar storage lately, and I understand I'll have to do some RTFM. However, I need a quick answer to the following question, if possible. I see the following at the end of a job step: IEF032I STEP/UTIL/STOP 2015021.1318 CPU: .. VIRT: 9832K SYS: 840K EXT: 1539796K SYS: 18188K ATB- REAL: 716K SLOTS: 32K VIRT- ALLOC: 67M SHRD: 1015808M This tells me that the step has as much as 67M above the bar storage allcated (highwater mark). This was backed by up to 716K of fral frames (also highwater mark). Now here are my questions: a) Does SLOT mean slots on AUX only, or would this include slots on FlashExpress used for paging? b) Both REAL and SLOTS are in KiB, not frames and pages, right? c) What does the SHRD mean? This what the manual says: SHRD: Indicates the maximum megabytes of above the bar shared virtual storage (high-water mark) that were accessable by the step. Do the REAL and SLOTS numbers include the frames/pages from the sharead area? I understand that a program needs to first allocate ATB storage (IARV64 REQUEST=GETSHARED), before it can be shared (IARV64 REQUEST=SHAREMEMOBJ). In the above case, the program seems to have allocated quite some virtual ATB srotage but it is little used (only very few real frames allocated). -- Peter Hunkeler -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
