Siemens Network Hardware SM2 monitoring system User Manual

U3585-J-Z125-8-76

347

Notes on SM2 operation

If monitoring is executed under VM2000 control within BS2000 systems, the following
special considerations are applicable for the implementation of the SM2 program and for
the interpretation of the monitored data:

–

Generally speaking, SM2 is executable under any guest system and provides
monitored data relevant to the respective local guest system.

–

The sum TU + TPR + SIH + IDLE is relativized in every guest system to 100% in the
ACTIVITY report, PERIODIC-TASK report, CPU report (NORMED column), and
SM2R1 report 1.
The result of this relativation is the manual formation of the sums of the percentage load
for all guest systems, not the total CPU utilization.

–

In the SM2R1 report 2 and the CPU report (MEASURED column), the non-relativized
values for TU, TPR, SIH and IDLE are shown, i.e. the real load values determined by
the relevant guest systems.

Under VM2000/SR, the real CPUs are assigned exclusively to the guest system, i.e. the
non-relativized values for TU, TRP, SIH, and IDLE correspond to the relativized values.

The time components of CPU utilization in the CPU report (MEASURED column)
cannot be compared with the data in the VM2000 report (CPU MEAS). The data in the
CPU report relate to the assigned CPUs of the VM, while the utilization values in the
VM2000 report relate to the physically available CPUs.

–

The values in SM2R1 reports 62 and 60 are also not relativized! In this case the real
CPU times (TU + TPR) or the time equivalent of the CPU time will be listed for the local
guest system and for each category.

–

The CPU time given in the task statistics report is likewise the real CPU time consumed
by a task in processor states TU + TPR.

–

A summary of the overall CPU utilization, distribution of the CPU capacity among the
individual guest systems, and the CPU time used by the individual guest systems is
represented for the SM2 which is brought to execution on the privileged machine (VM1).
(See also VM2000 report or SM2R1 report 98 and 99.)

–

If SM2 is running on a normal guest system, only the values relevant to this guest
system are identified in the VM2000 report or SM2R1 report 98.
The channel utilization is an exception, as the overall utilization is always output here.

–

For information on the accuracy of the TU and TPR times, see “Notes on particular
variables” on page 345.