Sri has a winner. When you read the apar description, it is a failed getmain (region) that causes the problem.
-----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Allan Staller Sent: Tuesday, June 12, 2018 11:11 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: IDCAMS REPRO very slow on z/OS 2.3 I would verify the CISIZE on the old/new files. Buffering techniques? Contention? Region? -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Frank Swarbrick Sent: Tuesday, June 12, 2018 10:51 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: IDCAMS REPRO very slow on z/OS 2.3 We just upgraded from z/OS 2.2 to z/OS 2.3 on Sunday morning. This appears to cause IDCAMS REPRO jobsteps to do a lot more I/O and take a lot longer: PROCSTEP RC EXCP CONN TCB SRB CLOCK SERV RECORDS PROCESSED CPCOPY3 00 255K 929K 2.658683 0.159647 15.5 3103515 52662441 CPCOPY3 00 256K 967K 2.679822 0.186634 16.9 3156197 52760628 CPCOPY3 00 256K 1014K 2.693045 0.191031 17.6 3175500 52812944 CPCOPY3 00 257K 1071K 2.698492 0.190811 18.7 3181257 52834640 CPCOPY3 00 257K 1014K 2.706506 0.195671 18.0 3195359 52842738 CPCOPY3 00 258K 909K 2.687564 0.163270 16.3 3139318 52852559 After z/OS v2.3 implementation: CPCOPY3 00 18M 2363K 6.493965 1.100855 101.3 10081297 52859452 CPCOPY3 00 18M 2406K 6.123753 1.018400 100.5 9588445 52888383 So from 15-20 minutes for 5.2 million records to 100 minutes. Anyone know of a system level "tuning" parameter we might need to tweek? Thanks, Frank ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ::DISCLAIMER:: -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. E-mail transmission is not guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or may contain viruses in transmission. The e mail and its contents (with or without referred errors) shall therefore not attach any liability on the originator or HCL or its affiliates. Views or opinions, if any, presented in this email are solely those of the author and may not necessarily reflect the views or opinions of HCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of authorized representative of HCL is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. Before opening any email and/or attachments, please check them for viruses and other defects. -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------- 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
