Using the Server Activity Monitor

The Caching Proxy's Server Activity Monitor displays server and network performance statistics, server and network status, and access log entries. The monitor can be used remotely and does not need to be on the same machine that is running the proxy server. The Server Activity Monitor is enabled by default and requires no configuration.

There are two ways to open the Server Activity Monitor:

Unlike other forms in the configuration client, the forms in this category do not set configurations for the server, but display data about server usage. These forms provide considerably more information than can be displayed in a single console window.

The following sections show the type of information that the Server Activity Monitor provides, and suggest how to use the information to tune performance.

Several Server Activity Monitor pages are available:

Each of the pages has a Refresh button, which can be used to update the information.

Activity Statistics

Table 4 shows an example of the Activity Statistics page.

Table 4. Activity Statistics
Activity Statistics
Connections 1 Active, 431 maximum
Response time Not available
Throughput 0 connections/second
Requests processed today 0
Total requests processed 114
Request errors 3

These server activity statistics can be used to monitor the server traffic in terms of number of access requests, response time, throughput, requests processed today, total requests processed, and errors. The following configuration changes affect the statistics on the Activity page.

Network Statistics

Table 5 shows an example of the Network Statistics page.

Table 5. Network Statistics
Network Statistics
Outgoing data: 1K bytes/second
Incoming data: 1K bytes/second
Bandwidth saved: 3 K bytes (0K bytes/second)
Bandwidth saved today: 0 K bytes (0 K bytes/second)

The Network Statistics form provides information about the network the proxy is running on, including the data speeds for bytes sent and received.

Access Statistics

The Access Statistics page displays the 20 most recent entries in the access logs. This page displays recent entries in the Proxy Access log (in black type) and the cache access log (in blue type). You can customize what is displayed by customizing what is logged. For more information on the access log statistics, see Access log filters.

Proxy Access Statistics

The Proxy Access Statistics form provides information on the proxy activity, such as which URLs were requested and whether they were served from the cache. Following the URLs are the return codes given to the clients and the file size in bytes. The following settings can improve the proxy access statistics:

Cache Statistics

If caching is enabled, the Cache Statistics page shows recent cache access information. It provides information on the cache and index, including the following:

Many cache configuration options change the cache statistics results (see Configuring proxy server caching).

Cache Refresh Summary

If the cache agent is configured to preload files in the cache, the Cache Refresh Summary page shows information on the most recent run of the cache agent. The cache agent must have run at least once to display any information. To change the way the cache refresh agent works, consider the following: