This allocation time can be calculated from SMF type 30. I am sure time is tracked. I am not sure the associated CPU is tracked.
-----Original Message----- From: IBM Mainframe Discussion List <[email protected]> On Behalf Of Paul Gilmartin Sent: Tuesday, August 6, 2019 11:45 AM To: [email protected] Subject: Re: CPU time cost of dynamic allocation On Tue, 6 Aug 2019 12:25:05 -0400, Charles Mills wrote: > >OTOH I have an IEFBR14 batch job on the same machine that allocates 15 >temporary datasets in JCL. The entire job lock, stock and barrel uses >(according to IEF032I) .00 CPU seconds. Can anyone explain why JCL >allocation is apparently much more CPU efficient than SVC 99 allocation? > Nowadays, z/OS performs some special optimization for IEFBR14 (it knows it's not going to use those data sets anyway.) Might that come into play here? -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] 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 [email protected] with the message: INFO IBM-MAIN
