Using Statistics

Once you have enabled statistics, you can get a variety of information on how your server instance is running. The statistics are broken up into functional areas.

To access statistics

Steps

1. Access the Server Manager, and click the Server Status tab.

2. Click the Monitor Current Activity link.

3. Choose the refresh interval from the Select Refresh Interval drop-down list.

   The refresh interval is the number of seconds between updates of the statistics information displayed.

4. Choose the kind of statistics you want displayed from the Select Statistics To Be Displayed drop-down list. For more information of the types of statistics, see Displaying Statistics in the Server Manager.

5. Click Submit.

   If your server instance is running, and you have enabled Statistics/Profiling, you see a page displaying the kind of statistics you selected. The page is updated every 5-15 seconds, depending upon what you chose for the refresh interval.

6. Select the process ID from the drop-down list.

   You can view current activity through the Server Manager, but these categories are not fully relevant for tuning your server. The perfdump statistics are recommended for tuning your server.

Displaying Statistics in the Server Manager

This section describes how a subset of the proxystats.xml data can be viewed in the Server Manager.

You can view totals, maximum values, peak numbers, and bar graphs of information pertaining to connections to the Proxy Server, DNS processing, keep-alive values, cache, and server requests.

The following section describe the types of information that may be obtained for each of these.

Connection Statistics

The following connection statistics are available from the Server Manager:

• Total number of connections

• Maximum number of queued connections

• Peak number of queued connections

• Current number of queued connections

• Number of processes

DNS Statistics

The following DNS statistics are available from the Server Manager:

• Maximum DNS cache entries

• Number of processes

• Number of DNS cache hits (also shown as a bar graph)

• Number of DNS cache misses (also shown as a bar graph)

Keep-Alive Statistics

The following keep-alive statistics are available from the Server Manager:

• Maximum keep-alive connections

• Keep-alive timeout

• Number of processes

• Number of keep-alive hits (also shown as a bar graph)

• Number of keep-alive flushes (also shown as a bar graph)

• Number of keep-alive refusals (also shown as a bar graph)

• Number of keep alive time-outs (also shown as a bar graph)

Cache Statistics

The following file cache statistics are available from the Server Manager:

• Maximum cache age (in seconds)

• Maximum heap cache size

• Maximum memory cache map size

• Number of processes

• Number of cache hits (also shown as a bar graph)

• Number of cache misses (also shown as a bar graph)

• Number of information cache hits (also shown as a bar graph)

• Number of information cache misses (also shown as a bar graph)

• Number of content cache hits (also shown as a bar graph)

• Number of content cache misses (also shown as a bar graph)

Server Request Statistics

The following server statistics are available from the Server Manager.

• Total number of requests

• Number of bytes received

• Number of bytes sent

• Number of processes

• A breakdown of the requests per HTTP server code (also shown as bar graphs). For example, the HTTP server code 200 indicates a fulfilled request.