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The SHOW SYSWAIT command displays main task apparent wait statistics.
The system maintains wait statistics each time an operating system WAIT is issued. The information returned by this command includes the following statistics:
These statistics can be used as a guide to how busy the system is and whether performance control measures are having an overall effect.
This command has the following format:
SHOW SYSWAIT
Use SYSWAIT statistics as a guide only because they reflect the voluntary loss of control of your product region and do not reflect operating system resource management activity.
The statistics are maintained on a historical and interval basis. The first line of the two detail lines shows the statistics since this command was last issued. The second detail line shows the long-term accumulation. These statistics are reset at midnight. Each time this command is issued, the current statistics for this interval are rolled over into the historical statistics. This feature provides a means for displaying activity in the short term, compared against the long-term average.
AWAIT% reflects the apparent wait time that control has voluntarily been passed to the operating system. Therefore, the actual wait time could be higher, because of page faults, higher priority work, and so on.
The number of times that at least one NCL process was forced idle when a wait was issued is also shown as the FWAIT count. This count indicates that work could have been done, but performance controls forced all ready NCL processes to wait.
Example: Display Wait Statistics
SHOW SYSWAIT N58001 PERIOD START: AWAITS FWAITS FWAIT% AWAIT% RATIO N58002 14.30.04 135385 3558 2.62% 99.36% 2 N58002 14.30.04 135385 3558 2.62% 99.36% 2 N58020 PERIOD START: TOTAL-CPU %-BSY N58021 SYSTEM-CPU %-SYS ACCNTED-CPU %-ACC UNACCNTD-CPU %-UNA N58022 14.30.04 140.173343 0.6 N58023 3.118633 2.2 137.047259 97.7 0.007450 0.0 N58022 14.30.04 140.173343 0.6 N58023 3.118633 2.2 137.047259 97.7 0.007450 0.0 N13503 *END*
Displays the start time for statistics accumulation.
Displays the number of operating system waits that have occurred since the start time.
Displays the number of FWAITS that took place when an NCL procedure was in a forced wait due to performance control measures.
Displays the percentage ratio FWAITS is to AWAITS.
Displays the percentage of elapsed time that the system was in an operating system wait.
Displays the number of interval events processed per AWAIT.
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