Kees, APAR PI72631 may interest you. This APAR was opened up because of our issue we ran into under z/OS 2.2. We are being told this also affects z/OS 2.1. This APAR really does nothing for the overall memory usage. As for the memory usage, IBM made a change in z/OS 2.2 around how they handle CSM storage which caused an increase in size. We have setup some automation to issue the " MODIFY vtamname,CSM,FIXED=xxxM" command if we get constrained on CSM storage.
APAR Identifier ...... PI72631 Last Changed ........ 16/11/23 LOCK CONTENTION WHEN CSM STORAGE GOES CONSTRAINED Symptom ...... PR PERFM Status ........... OPEN Severity ................... 1 Date Closed ......... Component .......... 5655HAL00 Duplicate of ........ Reported Release ......... 210 Fixed Release ............ Component Name TCP/IP V3 MVS Special Notice Current Target Date ..16/12/21 Flags SCP ................... Platform ............ Thanks.. Paul Feller AGT Mainframe Technical Support -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Vernooij, Kees (ITOPT1) - KLM Sent: Thursday, December 01, 2016 02:26 To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Question about memory usage under z/OS 2.2 Paul, We are going to 2.2 soon. Do you have information about the problems? APAR numbers, PTFs? Thanks, Kees. -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Feller, Paul Sent: 11 October, 2016 23:12 To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Question about memory usage under z/OS 2.2 Mike, thanks for the information. I will review the documents. An update on one of our issues. It looks like IBM has found some type of bug related to CSM storage management. I'm being told an APAR is going to be created. Thanks.. Paul Feller AGT Mainframe Technical Support -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Mike Wawiorko Sent: Tuesday, October 11, 2016 04:33 To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Question about memory usage under z/OS 2.2 If you were running close to the limit prior to upgrade to z/OS V2.2 without realising it you may just need to review some settings. CSM with D NET,CSM and SYS1.PARMLIB(IVTPRM00) are a good place to start. You may need to look at this if you've added IP interfaces or turned on multiple OSA queues. InbPerf: Dynamic WorkloadQueueing: Yes Also D NET,BFRUSE Try these Share presentations. https://urldefense.proofpoint.com/v2/url?u=http-3A__share.confex.com_data_handout_share_127_Session-5F19594-5Fhandout-5F9634-5F0.pdf&d=DQIGaQ&c=9g4MJkl2VjLjS6R4ei18BA&r=eUhu3PeeWy6RTndlJVKembFjFsvwCa8eeU_gm45NyOc&m=m_Osofuz1k4cG4FEvz1mCqvII7v8GJC9FLOr2-_5jdI&s=j7ZftFOS22CD68KtZLM-IRRC398rPuBBYr2h-d-8F28&e= https://urldefense.proofpoint.com/v2/url?u=http-3A__share.confex.com_data_handout_share_127_Session-5F19617-5Fhandout-5F9760-5F0.pdf&d=DQIGaQ&c=9g4MJkl2VjLjS6R4ei18BA&r=eUhu3PeeWy6RTndlJVKembFjFsvwCa8eeU_gm45NyOc&m=m_Osofuz1k4cG4FEvz1mCqvII7v8GJC9FLOr2-_5jdI&s=y_BDDHQ0o8pQD61MPNsfkR_KtNF6o7zDRnR8mRWhHIw&e= Mike Wawiorko ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ******************************************************** For information, services and offers, please visit our web site: https://urldefense.proofpoint.com/v2/url?u=http-3A__www.klm.com&d=DgIGaQ&c=9g4MJkl2VjLjS6R4ei18BA&r=eUhu3PeeWy6RTndlJVKembFjFsvwCa8eeU_gm45NyOc&m=OSXds02gK0s9L3p8m4QAFR0J3lMvx85XeQKEMZVhKXE&s=41N7xXKwzbVo7CQWumawpNgndLUWjbKdfbfslJZMJMQ&e= . This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. Koninklijke Luchtvaart Maatschappij N.V. (also known as KLM Royal Dutch Airlines) is registered in Amstelveen, The Netherlands, with registered number 33014286 ******************************************************** ---------------------------------------------------------------------- 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
