Session-level data is collected cumulatively. The collection period is used to limit the frequency of this update.
For example, if you set the SET SESSION RATE to 120 seconds and issue a MONITOR SESSION request every 120 seconds, session usage data is collected and cumulatively totaled every 120 seconds.
Note: Session-level data is lost in the event of a system outage.
Data reported includes data for the beginning 120 seconds as well as for subsequent intervals.
For more information on how session usage data is collected, see “System-Level Monitoring” on page 41.