We have a Z9 BC with one CPU and recently went back to hard capping from
Group Capacity because our production system started to suffer when WLM
started to enforce the MSU limit after 4 hours on a peak day.

Before Group Capacity, the production system had no problem handling the peak
load and was able to use a few MSUs above its defined capacity with no
slowdown after 4 hours.

Here are our prior settings:
Group Capacity=11
PRODLPAR  initial-capping=No CPU-weight=800  Defined-Capacity=0  WLM=No
TestLPAR  initial-capping=No CPU-weight=200  Defined-Capacity=4  WLM=No

Here are our current settings:
PRODLPAR  initial-capping=Yes CPU-weight=800  Defined-Capacity=10  WLM=No
TestLPAR  initial-capping=Yes CPU-weight=200  Defined-Capacity=2   WLM=No

The Test LPAR normally uses 1 MSU but needs more when there is testing being
performed.  The reason I'd like to uncheck 'Initial Capping' is to allow the
LPARs to go beyond their 'Initial Weight' if the other LPARs are not busy.

We got the impression from SHARE that 'Initial Capping' had to be checked to
allow the LPAR to use the 'free' MSUs beyond the Defined Capacity.  But we
don't want to do this if it means being unable to take advantage of the
'free' MSUs or if it means WLM will start enforcing the 4 hour rolling
average MSU limit.

Will unchecking 'Initial Capping' still allow the LPARs to go a little bit
beyond their Defined Capacity without WLM stepping in and trying to enforce
the 4 hour rolling average MSU limit?

Thanks.

Vince 

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