All,

Here's a question I've been pondering.

In setting up one CEC that has multiple LPARS, some TEST and some PROD,
with one combined WLM Policy, all systems in the same plex...

How much do the WLM Policies have to differ?  TEST has to have lower
goals than PROD, obviously, with IRD and CPU Vary enabled.  But by how
much?

Does anyone have direct experience with this that can talk a little bit
about it?  Specifically, I guess I'm really asking:


With IRD weight management (and low minimum weights, no max weight), and
CPU Vary enabled (and ALL LPs put in Initial so ANY LPAR can get ANY
number of LPs):

1.  Should TEST LPAR work be one, or two importance levels below PROD?
(or more?!?)

2.  Should the operating system tasks still run at SYSSTC on TEST (i.e.
at the same high service class level that the same named tasks run on
PROD)?

I'd like to run TEST uncapped, and let it "run away with the box" when
utilities are running and PROD is IDLE, but ensure that PROD gets
priority whenever it needs it.


Best regards,

Gary Diehl

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