On Tue, 3 Jul 2007 08:56:28 -0700, Norman Hollander on h-WiZ.biz wrote: > ... If you are like most other sites, with > different transactions with different SLAs, and the potential for the work > to > grow, I'd still recommend Transaction Goals. Since you can set it up by region(s), > it is not difficult to determine what is needed, and define it. I would suggest a > Default Service Class with the majority of the transactions defaulting > into it, a > Service Class with "loved" transactions (a select handful), and a Service Class for > "not loved" transactions (those driving slow devices or those that really look like batch). > You can have Production vs. Development vs. Ad-hoc specifications. You can have High, Medium, > Low specifications as appropriate.
Be careful with CICS response time goals. WLM adjusts the CICS and DB2 regions as needed to meet the transaction goals, but does not manage the transactions directly. As a result, you may find that your "not loved" transactions will go along for the ride, based upon the other transactions that are processed by the server regions. As for the service classes assigned to the server address spaces themselves, these are used primarily during initialization. Once they have registered as a server, they will be managed based upon the transactions going through them I agree completely with the other responses that have been posted. Keep it as simple as possible. I also prefer response time goals whenever possible, including for batch. For that case, remember that all jobs in a service class are treated the same, but by using relatively low percentile goals the long running batch will not mess you up too much. For example, you might have a goal that 50% of your production jobs finish in 30 minutes. The occasional six hour job will not skew your results at all, unless it is running by itself. Of course, YMMV. Discretionary is good too. I even used discretionary for the third period TSO that Mark referred to. Monitor your results, and don't be afraid to change your policy, but give WLM as much latitude as possible to do it's work. -- Tom Marchant ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
