Happy New Year to all.
I'm looking at product usage data in SMF 89 subtype 1 records, and I see that TCB and SRB values go up and down, and look like reasonable interval values. The SMF89UZT field for offloaded CPU time, however, only seems to go up and makes it look suspiciously like it is just a snapshot of the counter reading, not the true interval (delta) value for that interval. The snippet below is for z/OSMF, but I can also see the same happens for IBM products like DB2, MQ, Websphere and IBM Integration Bus (IB). ---- SMF DATE/TIME ---- SRB TCB OFFLOAD 30 DEC 2019 00:00:00.00 0:00:00.01 0:00:00.33 1:31:58.37 30 DEC 2019 00:05:00.00 0:00:00.01 0:00:00.29 1:31:59.12 30 DEC 2019 00:10:00.00 0:00:00.01 0:00:00.32 1:31:59.86 30 DEC 2019 00:15:00.00 0:00:00.01 0:00:00.36 1:32:00.57 30 DEC 2019 00:20:00.00 0:00:00.00 0:00:00.30 1:32:01.30 30 DEC 2019 00:25:00.00 0:00:00.00 0:00:00.30 1:32:02.05 30 DEC 2019 00:30:00.00 0:00:00.01 0:00:00.34 1:32:02.79 I don't have any non-IBM product data with offload engine usage to check, so if anyone who does have would be prepared to have a look at their data and report back, that would be very useful. Whatever the results, I think there are some questions to pose to IBM: Is the SMF89UZT field cumulative for all products? If so, please can you document that in the SMF record description. Is the SMF89UZT field cumulative only for IBM products? If so, please can you document that in the SMF record description. Is the SMF89UZT field meant to be an interval value? If so, please can you fix the z/OS code so it is. Any additional thoughts or comments are most welcome. Best wishes Nick Nick Varley Director, Customer Support p +44 (0) 1823 226012 | m +44 (0) 7766 806780 nick.var...@syncsort.com -------------------------------- We organise data everywhere, to keep the world working Syncsort Limited 2 Tangier Central Castle Street Taunton TA1 4AS UK www.syncsort.com---------------------------------------------------------------------------------------------------------- ATTENTION: ------ Syncsort Limited is a limited company registered in England and Wales. Registered number: 01373158. Registered office: 3rd Floor, The Pinnacle, 20 Tudor Road, Reading, RG1 1NH. VAT: GB295525177 The information contained in this message (including any files transmitted with this message) may contain proprietary, trade secret or other confidential and/or legally privileged information. Any pricing information contained in this message or in any files transmitted with this message is always confidential and cannot be shared with any third parties without prior written approval from Syncsort. This message is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any use, disclosure, copying or distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or Syncsort and destroy all copies of this message in your possession, custody or control. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
