The Server Stats Server Card
Contents / Server Card
Fields
The Server Stats Server Card allows you to view statistics about your
currently running server configuration. The statistics displayed on this
form reflect statistics gathered in one of two ways:
- since the current server configuration began running
- since the current server configuration was reset
The Server Card Fields
The Server Stats Server Card fields are:
- Elapsed Time (Secs)-Shows the amount of time that statistics
have been gathered.
- Connections-Shows the number of connections that have been made
to ports on which SWS is listening. This and the following field (Connections/Second)
indicate the impact of the network on your server's performance.
- Connections/Second- The number of connections divided by the
elapsed time. If the statistics have been gathered over a long period of
time (more than one day), this number may not be meaninful because peak
load times and low load times are averaged together.
- Cache Accesses-Indicates the number of times SWS looked in the
cache for a requested document. SWS will not look in the cache for CGI scripts
or dynamically generated documents from SSI.
- Cache Misses-Indicates the number of files that SWS looked
for in the cache, but did not find. These documents are then fetched into
the cache. If the cache is already full, the least recently requested document
will be dropped. Many cache misses (a high Miss Rate) may mean that your
cache is too small.
- Replacements-Indicates the number of previously cached documents
that were replaced by new documents. A high number in this box could mean
that your cache is too small and needs to be enlarged, or that all documents
requested at your site are equally requested.
- Miss Rate-The percentage of cache accesses that are cache misses
(requested file is not already cached). If the Miss Rate number is high,
you may want to increase the size of your cache.
- Verification Cache Accesses-Indicates the number of times a
document in the cache was verified for updates. If a document has been
in the cache longer than the cache Verification
Interval, SWS will check the filesystem to see if the cached copy is
out of date. If it is out of date, the cached copy will be replaced by
the more recent file. This number indicates how many of the Cache
Accesses were verified.
- Miss Rate-The percentage of Verification Cache
Accesses for which the cached document was found to be valid. This
percentage indicates how often the timestamp of a document in the cache
matches the actual timestamp in the filesystem. If this is a high percentage,
you may want to increase the Verification Interval
to reduce the number of verification accesses.