Setting up a service class for DDF

2008-02-15 Thread Kelman, Tom
When WLM was set up in this shop about 5 years ago the DDF workload was extremely low. The person that set up WLM assigned DDF to "NEWWORK". Over the past year DDF processing has growing considerably to where it is now taking approximately 10% of the production LPAR during prime shift. Most of th

Re: Setting up a service class for DDF

2008-02-15 Thread Mark Zelden
On Fri, 15 Feb 2008 10:23:45 -0600, Kelman, Tom <[EMAIL PROTECTED]> wrote: >When WLM was set up in this shop about 5 years ago the DDF workload was >extremely low. The person that set up WLM assigned DDF to "NEWWORK". >Over the past year DDF processing has growing considerably to where it >is now

Re: Setting up a service class for DDF

2008-02-15 Thread Shane
If this is a production LPAR and all the DDF work coming in is production, classify it as such. As Mark said, you'll need to keep an eye on it of course. We saw some awful effects when DDF first came into use. And if you are already seeing 10% consumption, you might be in for a shock when you give

Re: Setting up a service class for DDF

2008-02-15 Thread Ted MacNEIL
>If this is a production LPAR and all the DDF work coming in is production, >classify it as such. I can tell you what we did. 1. Set up a high velocity service class with an importance just below production online (IMS, CICS, etcf). 2. Set up a transaction class with two periods: a. The firs

Re: Setting up a service class for DDF

2008-03-04 Thread Diehl, Gary (MVSSupport)
I'm with Ted on this one. We also started years ago with one or two DDF service classes, and they quickly became woefully inadequate. We tried a variety of configurations, from a 5-level priority system with multi-periods, to one or two with single periods. In our environment, the most efficient

Re: Setting up a service class for DDF

2008-03-05 Thread Neil Duffee
At 2008-03-04 10:01, Gary Diehl <[EMAIL PROTECTED]> wrote about "Re: Setting up a service class for DDF" to IBM-Main: > We also started years ago with one or two DDF service classes, [snip] > most effective has been to code a HI/MED/LOW setup [snip] each with > ONE a