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Measures reported by ProxyCacheTest
Web
site caching is an efficient use of resources and another benefit of the MS
proxy server.
Since you can use the MS proxy server as a common connection point to the
Internet, you can also use it to cache frequently accessed resources. The
proxy server allocates a portion of the server’s hard disk space to store
frequently accessed objects. Internet requests are more efficiently
responded to through the use of fresh-cached data, which in the long run,
helps in minimizing internet response times.
Caching can either be passive or active. Passive caching just stores objects
as they are requested, so the cache is updated only when users request
information. Active caching directs the server to refresh objects in the
cache automatically.
You can selectively control the proxy server caching so that you can limit
the size of cached objects, change the expiration limits (control the
freshness of objects), and determine whether the server always caches, or
always excludes from cache, certain content.
This
test reports the performance statistics pertaining to this caching activity
of the MS Proxy server.
| Measurement |
Description |
Measurement
Unit |
Interpretation |
| Active_refresh_rate |
The
rate at which data is retrieved from the Internet to refresh popular
URLs in the URL cache. |
Kb/sec
|
A low
value indicates low refresh rate and a possible network problem. |
| Active_url_refresh |
The rate at which the URLs in the URL cache are refreshed from
the internet |
URLs/sec
|
A low
value or 0(zero) indicates the non availability of URLs, or DNS servers from
the internet. |
| Cache_size |
The
total number of bytes currently available in the URL Cache |
Kb |
A
high value indicates possible high usage of virtual memory on web
proxy cache. |
| Url_commits |
The
rate at which the URLs are committed to the URLs cache |
URLs/sec |
A low value or 0 (zero) indicates low
URL commits, low network resource
availability. |
| Url_retrievals |
The
rate at which the URLs are retrieved from the URL cache. |
URLs/sec |
A low
value indicates the low availability of the URLs from the proxy cache. |
| Urls_in_cache |
The
current number of URLs in the URL cache |
Number |
A
high value indicates possible low availability of virtual
memory. |
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