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Spotlight on DB2 6.10 - User Guide

Spotlight on IBM DB2 LUW (Linux, Unix, and Windows)
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About Spotlight on IBM DB2 LUW drilldowns Buffer Pool Analysis drilldown Client Application Analysis drilldown Database Analysis drilldown Database Manager Summary drilldown Diagnostic Log drilldown FCM Analysis drilldown Tablespace Analysis drilldown Top SQL drilldown Operating System drilldown Workload Management Analysis drilldown
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Data Read Rate graph

The Data Read Rate graph depicts rates for retrieving data pages from the buffer pools for the application over consecutive monitoring intervals. These rates are based on the number of pages read per second. The graph contains the following series:

  • Logical —Plots the rate of data page read requests directed at the buffer pool.

  • Physical —Plots the rate at which logical read requests required actual database I/O to get the data pages into the buffer pool first. When the physical read rate is persistently higher than the logical read rate, the buffer pool is not being used effectively.

For related statistical information

The Statistics tab shows the buffer pool read counts used to generate this graph. The names for these statistics begin with Buffer Pool.

 

 

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