Even Peter Relson did not comment on this, but I gotta say it: 2 GB LPAR is too small. IBM has argued for years that many customer problems of all ilk can track back to insufficient real memory allocation. This was a common theme in SHARE presentations for quite a while. Finally the requirement for larger memory was codified in z/OS 2.3 running on z14: you will get a warning at IPL if an LPAR has less than 8 GB. Just sayin.
We never saw the warning because we made sure to allocate >= 8 GB in that environment. https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.3.0/com.ibm.zos.v2r3.e0zm100/BCP_zNext_Memory_Reqs_V2R3.htm . . J.O.Skip Robinson Southern California Edison Company Electric Dragon Team Paddler SHARE MVS Program Co-Manager 323-715-0595 Mobile 626-543-6132 Office ⇐=== NEW robin...@sce.com -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Tom Marchant Sent: Wednesday, January 16, 2019 5:52 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: (External):Re: Abend 106 (was Generic query on Region allocation failure) On Wed, 16 Jan 2019 13:57:48 +1100, Wayne Bickerdike wrote: >Mark Zeldens excellent IPLINFO shows: > >The real storage size at IPL time was 2048M. >The private area size <16M is 8192K. It seems to be a sloppy calculation. The private area always ends on a 1M boundary, but every system I've looked for the last several years had a private area that starts at X'6000'. Thus your actual private area size below 16M is X'7FA000' or 8168K. >The private area size >16M is 1628M. >The CSA size <16M is 4812K. >The CSA size >16M is 300652K. >The SQA size <16M is 1248K. >The SQA size >16M is 15792K. >The maximum V=R region size is 280K. >The default V=R region size is 140K. >The maximum V=V region size is 8168K. > >Based on this: >CVTGDA = C2d(Storage(D2x(CVT + 560),4)) /* point to GDA */ >GDACSA = C2d(Storage(D2x(CVTGDA + 108),4)) /* start of CSA addr */ >GDACSAH = D2x(GDACSA) /* display in hex */ >CSAEND = (GDACSASZ*1024) + GDACSA - 1 /* end of CSA */ >CSAEND = D2x(CSAEND) /* display in hex */ > >So CSA <16M is too small. Do you mean private is too small? -- Tom Marchant ---------------------------------------------------------------------- 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
