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Spotlight on DB2 6.10 - 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
Spotlight on IBM DB2 LUW alarms Spotlight on IBM DB2 LUW Options Tuning SQL statements in Spotlight on IBM DB2 LUW
Spotlight Basics
Spotlight Connections Monitor Spotlight Connections Alarms Charts, Grids And Home Page Components View | Options Troubleshooting
Spotlight History Spotlight on Windows
Connect to Windows Systems Background Information Home Page Alarms Drilldowns View | Options Troubleshooting
Spotlight on Unix About us Third-party contributions Copyright

Direct I/O rates

The Direct dataflows depict the rate of direct reads and writes occurring in all active databases in the DB2 instance.

  • Direct writes—Database requests that bypass buffer pools to write LONG VARCHAR or large object (LOB) data directly to the database or to perform database restores and loads.

  • Direct reads—Database requests that bypass buffer pools to read LONG VARCHAR or large object (LOB) data directly from the database or to perform a database backup.

Required monitor switch

Buffer pool

Displayed statistic

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

  • W/s (direct write rate)—The total number of direct writes per second across all databases and partitions within the instance

  • R/s (direct read rate)—The total number of direct reads per second across all databases and partitions within the instance

Graph

The line graph that overlays each dataflow plots the instance-wide direct write or read rates 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 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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