User's Manual

228 U3585-J-Z125-8-76
CHANNEL report SM2 reports
Monitoring information
The values BUSY and NON OVERLAP are recorded by default. All other values are output
only if the CHANNEL-IO monitoring program has been activated for the monitored
channels. In the case of non-monitored channels, blanks are entered.
CHANNEL-PATH-ID Channel address.
BUSY Percentage of the monitoring cycle during which the corresponding
channel was active.
NON OVERLAP Percentage of the monitoring cycle during which the corresponding
channel was active and all processors were inactive.
PAM PAM block transfer:
Number of I/O operations or number of 2K pages transferred per
second.
BYTES Byte transfer:
Number if I/O operations or number of 2K pages transferred per
second.
NODATA Number of I/O operations without data transfer per second.
Notes
– Byte multiplexer channels cannot be monitored, since their activity is of secondary
important. Depending on the channel type, the CPU and the type of device connected,
activities which have a load between 0% and 100% are listed. In contrast to block multi-
plexer channels, high load values do not mean that there is a channel bottleneck, i.e.
high load values can be ignored.
– SM2 is not notified of device management commands (see the “Commands” manual
[15]). In the monitoring cycle in which the operator enters such commands, the data for
the affected channels may be incorrect
– No load values can be determined for CPUs with bus peripherals.
– When using VM2000, please note that the channel occupancy values BUSY and NON
OVERLAP always indicate the overall load of the channel. The percentage utilization by
an individual guest system cannot be determined. The value NON OVERLAP is
therefore insignificant. The monitored data supplied by the CHANNEL-IO monitoring
program always refers to the respective guest system.
– In the case of SR2000 systems, the values BUSY and NON OVERLAP cannot be
recorded for the BUS channels (channels 0 - F). The value 0 is always output.