When setting up CICS you would normally place the CICS regions into a velocity service class as you have done. In determining the velocity of a service class, WLM samples the service class periodically and evaluates the velocity as (no. of using samples)/(no. of using samples + no. of waiting samples). This means using CPU or I/O. So the execution velocity can be thought of as a type of throughput measurement.
Now you have to decide whether you're going to control your CICS processing via the execution velocity goal or via a response time goal. Many shops control their production CICS via a response time goal and their test CICS via the velocity goal. To control via a response time goal you need to set up another service class with either an average response time goal (not recommended) or a percentage response time goal. The percentage response time goal says you want xx% of the transactions to finish within a certain time peroid. Then you define your CICS transactions to this class. That can be done using one of several different methods such as the tran ID, APPLID, etc. (see the "MVS Planning Workload Management", SA22-7602-15). Once you do that the velocity goal for the regions is only used when there are no transactions going through them. Once there are transactions then the response time goals kick in. If you want to control completely by the velocity goal then don't set up the response time service class. If you have just 1 or 2 regions that you want to control via the velocity goal only then when defining them to the STC subsystem enter the region name. Then scroll 2 screens to the left. There you'll see a column for controlling by transaction response or region. Just enter "REGION" into this field. You really should not have other started tasks in the same service class as your CICS regions, especially if your using response time goals. That's because WLM will treat the CICS regions with response time goals differently than the other STCs. WLM actually ignore the velocity goal for those regions when transactions are processing through them. At the very least this will mess up your reporting values. Tom Kelman Enterprise Capacity Planner Commerce Bank of Kansas City (816) 760-7632 > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On > Behalf Of gsg > Sent: Tuesday, February 02, 2010 2:16 PM > To: IBM-MAIN@bama.ua.edu > Subject: WLM > > I'm not that familiar with WLM, which leads to some of my questions. > > We've been experiencing HIGH CPU activity in CICS, which uses ONLPRD > service class. The ONLPRD has a IMP of 1 and execution velocity of 50. > In > addition to ALL of our CICS running in ONLPRD, we are running DB2 task as > well and a few others. I don't really understand the execution velocity > or ??% > complete within 00:00:00. Can someone shed some light on this for me? > > Thanks > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO > Search the archives at http://bama.ua.edu/archives/ibm-main.html ***************************************************************************** If you wish to communicate securely with Commerce Bank and its affiliates, you must log into your account under Online Services at http://www.commercebank.com or use the Commerce Bank Secure Email Message Center at https://securemail.commercebank.com NOTICE: This electronic mail message and any attached files are confidential. The information is exclusively for the use of the individual or entity intended as the recipient. If you are not the intended recipient, any use, copying, printing, reviewing, retention, disclosure, distribution or forwarding of the message or any attached file is not authorized and is strictly prohibited. If you have received this electronic mail message in error, please advise the sender by reply electronic mail immediately and permanently delete the original transmission, any attachments and any copies of this message from your computer system. ***************************************************************************** ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
