Siemens Network Hardware SM2 monitoring system 用户手册
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U3585-J-Z125-8-76
CPU report
SM2 reports
NORMED
In the NORMED TO 100 % section, the sum of the percentage values for
TU, TPR, SIH and IDLE is 100 %.
TU, TPR, SIH and IDLE is 100 %.
MEASURED
The percentage values measured for TU, TPR, SIH and IDLE are output in
the MEASURED section.
When using VM2000, there may be discrepancies between the NORMED
value and the MEASURED value (see also section “SM2 together with
VM2000” on page 347). In particular, you should remember that the times
specified refer to the assigned CPUs of the VM and not to the system as a
whole. The average values across all processors are output in the AVG row.
the MEASURED section.
When using VM2000, there may be discrepancies between the NORMED
value and the MEASURED value (see also section “SM2 together with
VM2000” on page 347). In particular, you should remember that the times
specified refer to the assigned CPUs of the VM and not to the system as a
whole. The average values across all processors are output in the AVG row.
SR2000:
Under VM2000/SR, the real CPUs are assigned exclusively to guest
systems, i.e. the values under MEASURED are the same as those under
NORMED.
Under VM2000/SR, the real CPUs are assigned exclusively to guest
systems, i.e. the values under MEASURED are the same as those under
NORMED.
Notes
While SM2 records the sum of the TU and TPR times precisely, this total is divided into
TU and TPR times on the basis of the proportion of the samples that fall to TU and TPR.
This causes statistical inaccuracies in the calculation of TU and TPR times, which can
be noticeable in the case of small TU and TPR values (i.e. when a small number of
samples fall to TU and TPR). TU or TPR values of 0.0 % (online reports) or 0.0 milli-
seconds (TIME_IO buffer of the C interface), in particular, should therefore be inter-
preted with caution. The monitored data on CPU utilization is based on native CPU time
(see “CPU time and CPU service units on SR2000” on page 446 of the glossary).
TU and TPR times on the basis of the proportion of the samples that fall to TU and TPR.
This causes statistical inaccuracies in the calculation of TU and TPR times, which can
be noticeable in the case of small TU and TPR values (i.e. when a small number of
samples fall to TU and TPR). TU or TPR values of 0.0 % (online reports) or 0.0 milli-
seconds (TIME_IO buffer of the C interface), in particular, should therefore be inter-
preted with caution. The monitored data on CPU utilization is based on native CPU time
(see “CPU time and CPU service units on SR2000” on page 446 of the glossary).