サポートと今すぐチャット
サポートとのチャット

Spotlight on SAP ASE 2.12 - User Guide

Spotlight on SAP ASE
Background Information Desktop Features Connect to SAP ASE Spotlight® on SAP ASE Drilldowns Spotlight® on SAP ASE Alarms Glossary
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

Disk I/O Checks

This section reports the total number of disk I/O checks, and the number of checks returning I/O.

Total Checks

"Total Checks" reports the number of times engines checked for disk I/O.

When a task needs to perform I/O, the Adaptive Server engine running that task immediately issues an I/O request and puts the task to sleep, waiting for the I/O to complete. The engine then processes other tasks, if any. It also loops to check for completed I/Os. When the engine finds completed I/Os, it moves the task from the sleep queue to the run queue.

I/O Checks

I/O checks is a subset of the Total Checks.  It reports the number of times when a engine checked for I/O that there was a requested I/O pending or waiting.

* Available only for Adaptive Servers versions prior to 12.5.0.3

 

関連ドキュメント

The document was helpful.

評価を選択

I easily found the information I needed.

評価を選択