Web Proxy Cache Test

This test monitors the Web Proxy cache. The ISA server implements a cache of frequently-requested objects to improve network performance. You can configure the cache to ensure that it contains the data that is most frequently used by the organization or accessed by your Internet clients.

This test is disabled by default. To enable the test, go to the enable / disable tests page using the menu sequence : Agents -> Tests -> Enable/Disable, pick the ISA Proxy server as the desired Component type, set Performance as the Test type, choose the test from the disabled tests list, and click on the < button to move the test to the ENABLED TESTS list. Finally, click the Update button.

Target of the test : An ISA Proxy server 2004

Agent deploying the test : An internal agent

Outputs of the test : One set of results for every ISA Proxy server that is being monitored

Configurable parameters for the test
Parameters Description

Test period

This indicates how often should the test be executed.


The host for which the test is to be configured.


Refers to the port used by the ISA Proxy server.

Measurements made by the test
Measurement Description Measurement Unit Interpretation

Disk cache space

Indicates the amount of space used by the disk cache.


If the value of this measure grows closer to or equal to the allocated disk cache space, it would indicate that subsequent cache requests might be rejected due to non-availability of adequate cache space. This, in turn, would increase the rate of direct disk accesses, which will consequently degrade system performance.

Memory cache space

Indicates the amount of space used by the memory cache


An excessive consumption of the memory cache space would result in slow-down of the system. This is because the lack of sufficient space in the memory cache would cause the real memory (RAM) to directly service the requests for objects.

URL commit rate

Indicates the speed at which URLs are being written to the cache.