Allan, That was a golden hint: on the WLM page I decided to check the Systems Programmer Guide to: Workload Manager first and did a search on COUNTS. Chapter 6.1 describes the JES2 handling of WLM managed Initiators and what the TARGETs are.
Since this is a JES2 feature, I think it should be described also in JES2 documentation. Thanks, Kees. 6.1.1 WLM-managed initiators JES2 attempts to use approximately the same percentage of active WLM-managed initiators in each service class on each system. JES2 does not try to use the same number of initiators on each system; the number used is in proportion to the number started on each system. If WLM has started 20 initiators on system A and 10 on system B, and 15 jobs are submitted, 10 should run on system A and 5 on system B. This balancing only comes into effect when there are idle initiators; most commonly when other jobs have finished but the initiator is still active. If there are no free initiators, jobs run wherever another job finishes, or WLM starts new initiators. Initiator balancing does not necessarily keep the number of initiators the same, or keep all systems equally busy. It does stop one system from always selecting the work when there are free initiators elsewhere, which gives WLM a better picture of the workload when it is deciding whether to start or stop initiators. You can display JES2 targets using the $D SRVCLASS command. Example 6-1 shows the output of the command. We can see how many initiators are started and in use for the service class and the JES2 targets for the number of jobs on each system. We can see that the targets are in proportion to the number of initiators that WLM has started on each system. -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Staller, Allan Sent: Tuesday, October 22, 2013 16:07 To: [email protected] Subject: Re: What is TARGET on the JES2 D SRVCLASS output? Since you have not received any response, I would post the question here (you might even find the answer somewhere on the page): http://www-03.ibm.com/systems/z/os/zos/features/wlm/ under the Email z/OS WLM tab. Please post any response receive here as well. <snip> From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Vernooij, CP - SPLXM Subject: What is TARGET on the JES2 D SRVCLASS output? When I issue a $DSRVCLASS,COUNTS command, I get counters per system for the WLM managed Initiators, with numbers for INITS, ACTIVE and TARGET. INITS is the number of started initiators for the Serviceclass, ACTIVE is the number of initiators that are executing a job, but what is TARGET? This seems to be either 0 or *. I can't find any docs on it. </snip> ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ******************************************************** For information, services and offers, please visit our web site: http://www.klm.com. 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 [email protected] with the message: INFO IBM-MAIN
