The Total dataflows depict the rate at which all synchronous and asynchronous reads and writes are occurring across all databases within the DB2 instance.
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At each refresh, Spotlight captures the following statistics and displays them just above their respective rate dataflow.
W/s (total write rate). The number of writes—both synchronous and asynchronous—per second for all databases and partitions within the instance
R/s (total read rate). The number of reads—both synchronous and asynchronous—per second for all databases and partitions within the instance
The line graph that overlays each dataflow plots the instance-wide write or read rates captured over the series of refreshes that have occurred during the Spotlight session.
Clicking in the Global database I/O panel opens the Database Manager Summary drilldown. This drilldown provides details about all the active databases and partitions in the DB2 instance. You can select any database or partition to view details about that database, including I/O activity details.
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