There is no perfomance monitor. I had written a rexx procedure which
issues an IND USER for each machine every minute and calculates from the
difference to the value of the minute before the cpu consumption for
this single machine. IBM in Germany (in Person Hans Joachim Ebert,
meanwhile a retired VSE/CICS expert from IBM Munich) has compared the
values from my procedure with a real monitor and it was nearly the same.
The result of this procedure is that the added cpu consumption of the
measured users is not more than 50%.
The main purpose for this procedure was to get an estimate of the cpu
usage if customers have no monitor. So unfortunately I cannot look into
details.
kind regards
Franz Josef Pohlen
Rich Smrcina schrieb:
Do you have a performance monitor that can help you narrow down if a
specific VSE machine is the culprit?
[EMAIL PROTECTED] wrote:
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.
