Hello listers,
I have installed zVSE 4.1.1 und zVM 5.3 (Level 0703) at a customer where
we replaced vm/vtam with an additional 4th zVSE machine with only vtam
running for cross-domain between three zVSE4 systems. Before the change
of the environment the customer was on zVSE 4.1.0.
The added cpu consumption of the running guests is between 40-50% but
the IND LOAD and the activity on HMC shows permanently between 85 and
100% cpu usage. This creates of course massive performance problems.
I have no clue what process(es) may create this additional load. We have
restarted the zVM but it didn't help. If you put e. g. a batch job on
the zVSE the cpu load of the zVSE rises as expected to 30-50% and the
the vm load as indicated by IND LOAD is between 85 and 100%. Except of
the production VSE the load of the other machines including VM tcpip,
FTPSERVE and any others can be almost neglected (in sum below 10%).
There are no error msgs from hardware which could explain such a behaviour.
For documentation I have attached the user direct entries of the vse
systems, the system config, the autolog profile and the cms profile of
the VSE systems.
Has anybody experienced such a behaviour of zVM and an idea where to
look for the error. I know that the IND LOAD cpu value is rounded over a
period of time, but I have never seen a difference greater than 5 - 10%
to the added cpu% of the running systems.
--
kind regards
Franz Josef Pohlen
