Thanks all, information, I will try


Lizette Koehler <stars...@mindspring.com> 於 2017年10月7日 星期六寫道:

> Tommy,
>
> This is not a science, but an art.  So it takes time and study and
> adjustments to get WLM where you want it.
>
> The first phase is understanding how WLM works.  This written up in many
> manuals.  It is not quick to learn.  If you have a sandbox where you can
> work things out, that would be best.
>
> This has to do with system capacity.  How much work can the system run?
> How much work do you want the system to run.
>
> If you do not have sufficient resources, MIPs, Storage, Memory, then WLM
> will not run more work than it has resources available.
>
> Yes you can tell WLM to try and run more work than it has resources for,
> but then your processes run longer and are waiting longer for resources.
>
>
> What problem are you trying to solve?  If WLM has jobs in awaiting main
> status (this is a JES2 message in SDSF), then the system does not have
> sufficient MIPS, MEMORY, STORAGE to run the tasks.
>
> You may want to start, if you have not done so, reviewing this Redbook
>
> System Programmer's Guide to: Workload Manager
>
> http://www.redbooks.ibm.com/abstracts/sg246472.html?Open
>
>
> It can help with understanding this process.
>
> The section on setting goals could be helpful
> This chapter discusses tips to:
>      Manage your service definition.
>      Use a service class.
>      Select the type of goals to use.
>      Use Resource Groups.
>
>
> Lizette
>
> > -----Original Message-----
> > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU
> <javascript:;>] On
> > Behalf Of Tommy Tsui
> > Sent: Friday, October 06, 2017 8:44 AM
> > To: IBM-MAIN@LISTSERV.UA.EDU <javascript:;>
> > Subject: Re: Job await main select and cannot execution
> >
> > I am interesting how the WLM manages the number of initiators based upon
> > resources available and where to set the goals ? For initiators
> >
> > Peter Hunkeler <p...@gmx.ch <javascript:;>> 於 2017年10月6日 星期五寫道:
> >
> > > >In JES2, you can issue $S JOB and WLM will start another initiator
> > > >for
> > > that job. Your message suggests to me that you are JES3. I don't know
> > > if JES3 has a similar function.
> > >
> > >
> > > Yes it does. It's the "R" action character in (E)JES. I never cared to
> > > look what the resulting JES3 command is.
> > >
> > >
> > >
> > > --
> > > Peter Hunkeler
>
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