On Tue, 3 Jul 2007 08:31:53 -0500, Mark Zelden <[EMAIL PROTECTED]> wrote:
> >I'm sure most if not all of this has been covered many times. Hit the >archives, read the Redbook(s). > >To summarize: Use as few service classes as you can to separate the >work and as many report classes as you like / need for reporting. There >is a limit of 999 report classes and there really should be no more than about >30 active service classes on an LPAR (YMMV). You can have more than >30 in your policy if some classes are only active on certain LPARs. But >less is still better because there is only so much WLM can do at each >evaluation / adjustment cycle. > I want to amend that statement to say 30 periods since some service classes will have multiple periods. >Here: I have a couple of service classes each for CICS, DB2, DDF, >CB (WebSphere), STC, production batch and test batch and SAP >(used prior to DB2 V8 and only on a couple of LPARs). Test batch really >has one class + a discretionary class which 95% of all test batch falls into. >I have a single class for TSO and OMVS (with periods). > So based on trying to limit periods, our OMVS and TSO service class only have 2 periods. I didn't say it.. but our DDF classes also have 2 periods. In one sysplex I have a 3rd period for TSO that gets used for some long running interactive SAS. Period 2 has a *very* long duration. I've had to do the same at shops that run FOCUS, but generally, 2 periods should be enough for TSO. >But there are report classes for *every* production CICS region, WAS region, >and DB2 subsystem as well as many STCs (CATALOG, VTAM, TCPIP, session >manager) to name a few). But most STCs are lumped into a couple of >other groups with "monitors" being one of them. > Mark -- Mark Zelden Sr. Software and Systems Architect - z/OS Team Lead Zurich North America / Farmers Insurance Group: G-ITO mailto:[EMAIL PROTECTED] z/OS and OS390 expert at http://searchDataCenter.com/ateExperts/ Systems Programming expert at http://expertanswercenter.techtarget.com/ Mark's MVS Utilities: http://home.flash.net/~mzelden/mvsutil.html ---------------------------------------------------------------------- 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
