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Spotlight on DB2 6.9.3 - User Guide

Spotlight on IBM DB2 LUW (Linux, Unix, and Windows)
New in This Release Getting started with Spotlight on IBM DB2 LUW Desktop features specific to Spotlight on IBM DB2 LUW Spotlight on IBM DB2 LUW drilldowns
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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Spotlight Basics
Spotlight Connections Monitor Spotlight Connections Alarms Charts, Grids And Home Page Components View | Options Troubleshooting
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Connect to Windows Systems Background Information Home Page Alarms Drilldowns View | Options Troubleshooting
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Synchronous I/O Rate

The Synchronous dataflows depict the rates at which database agents are reading pages from disk to buffer pools and writing pages from buffer pools to disk across all active databases in the DB2 instance. These reads and writes are synchronous because they are performed as part of the processing of program instructions.

Required monitor switch


Displayed statistic

At each refresh, Spotlight captures the following statistics and displays them just above their respective rate dataflow.

  • W/s (synchronous write rate)—The number of synchronous writes per second instance wide

  • R/s (synchronous read rate)—The number of synchronous reads per second at the instance level


The line graph that overlays each dataflow plots the instance-wide synchronous write or read rate captured over the series of refreshes that have occurred during the Spotlight session.

Associated drilldown

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 a DB2 instance. You can select any database or partition to view details about that database, including I/O activity details.


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