On Wed, 9 Jul 2008 08:12:39 -0500, Max Scarpa <[EMAIL PROTECTED]>
wrote:

>(Cross posted)
>
>Esteemed listers
>
>In some past posts, while discussing about WLM, someone introduced 'skip
>clock' concept to describe behaviour of wlm when  goals are not reached, for
>instance because they are quite high and there isn't enough to boost them.
>In this case wlm ignores them (or leaves them with reached velocity) until
>skip clock expires (so I was told).
>
>Is this skip clock concept described somewhere (manuals, papers ) ?
>

Other than a mention of it in the SMF 99 description, I don't think so.  Many
of the WLM internals are not.   I remember seeing something about this in
the (now old) "OS/390 Workload Manager Implementation and Exploitation"
Redbook (SG24-5326-00)... although it didn't say it was the skip clock. The
same thing is in the current Redook "System Programmer’s Guide to: Workload
Manager" (SG24-6472-03):

"Periods for certain service classes are not candidates for being a receiver
because in the past they were defined as receivers without much improvement
in their PI. Those service class periods are skipped for a while to avoid
wasting
effort. This usually only happens when the installation sets a very
difficult goal."

Regards,

Mark
--
Mark Zelden
Sr. Software and Systems Architect - z/OS Team Lead
Zurich North America / Farmers Insurance Group - ZFUS G-ITO
mailto:[EMAIL PROTECTED]
z/OS Systems Programming expert at http://expertanswercenter.techtarget.com/
Mark's MVS Utilities: http://home.flash.net/~mzelden/mvsutil.html

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