About Statistics

You can monitor performance statistics by using the Admin Console user interface, the stats-xml URI, and the perfdump. For these monitoring methods, the server uses the statistics it collects. None of these monitoring methods will work if statistics are not collected.

The statistics give you information at the configuration level, the server instance level, or the virtual server level. The statistics are broken up into functional areas.

For configuration, statistics are available in the following areas:

• Requests

• Errors

• Response Time

For the server instance, statistics are available in the following areas:

• Requests

• Errors

• Response Time

• General

• Java Virtual Machine (JVM^TM)

• Connection Queue

• Keep Alive

• Host DNS Cache

• Client DNS Cache

• In-Memory File Cache

• Thread Pools

• Session Threads, including profiling data (exists if profiling is enabled)

  Some statistics are set to zero if Quality of Service (QoS) is not enabled. For example, the count of open connections, the maximum open connections, the rate of bytes transmitted, and the maximum byte transmission rate is zero if disabled.

Enabling Statistics

To enable statistics, use Admin Console.

Collecting statistics causes a slight hit to performance.

To Enable Statistics (stats-xml) from the Admin Console

1. Select the Proxy Server instance.

2. Click the Server Status tab.

3. Click the Monitor Current Activity sub tab.

4. Choose Yes for Activate Statistics/Profiling?

5. Save and apply changes.