MACROMEDIA COLDFUSION 4.5-ADMINISTRING COLDFUSION SERVER Technical Information Page 100

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CONFIGURING AND ADMINISTERING COLDFUSION 9
Using the ColdFusion Server Monitor
Last updated 2/21/2012
Active Requests
The Active Requests report lists all currently active requests that take longer to load than the request interval for
reports specified in the Refresh Interval setting. Requests include browser requests, CFC HTTP requests, web services,
gateways, and Flash remoting. You can view a list, a detailed view, or a graph of active requests. The detailed view
includes the CFML stack trace, which you can use to find deadlocked requests and where a long running request is
blocked. To see all request graphs in one view, click Chart. The graph indicates the number of requests that the server
is currently processing and the number of requests that are awaiting allocation of an application server thread to begin
execution. If the graph indicates that many requests are queued, you might want to increase the size of the thread pool.
Alternatively, if ColdFusion is deployed in a cluster, you may want to add a server instance for more efficient load
balancing.
Note: The Server Monitor includes LiveCycle Data Management Assemblers as Flash Remoting requests.
Active ColdFusion Threads
The Active ColdFusion Threads report lists all currently active threads. You can view a list, a detailed view, or a graph
of active threads.
Slowest Requests
The Slowest Requests report lists the slowest requests. You can specify the threshold that determines whether a request
appears on this page. The lower the threshold, the more requests appear on the list. Use the Report Size option to limit
the number of items in the list. You can view a list or a detailed view of the slowest requests. The detailed view includes
the CFML stack trace. For more information, see
Request handling” on page 102.
Slowest ColdFusion Threads
The Slowest ColdFusion Threads report lists the slowest ColdFusion threads. You can specify the threshold that
determines whether a ColdFusion thread appears in this report. As the threshold decreases, the number of requests in
the report increases.
Active Sessions
The Active Sessions report lists all active sessions. You can view a list, a detailed view, or a graph of active sessions. The
graph displays the active sessions and the number of users logged in to the server.
Cumulative Server Usage
The Cumulative Server Usage report lists the requests that have cumulatively used the most CPU time on the server.
Even if a request runs rapidly, if it runs frequently, it can consume a large proportion of CPU time. Tuning requests
with high cumulative server time can provide server-wide performance benefits. You can view a list, a detailed view,
or a graph of cumulative server usage. Use the Report Size option to limit the number of items in the list.
Highest Hit Counts
The Highest Hit Counts report lists the requests that have the highest hit count. You can view a list or a graph of
requests with the highest hit count. Use the Report Size option to limit the number of items in the list.
Template Cache Status
The Template Cache status report shows information about the template cache to indicate how it is performing. The
template cache is where ColdFusion stores compiled CFM and CFC templates in memory. When a template is
executed for the first time, it is compiled to Java bytecode, and then stored in the template cache. As long as the
template is unchanged, ColdFusion uses the compiled form of the template stored in the template cache. The Template
Cache status page lets you monitor the cache-hit ratio, which indicates the number of cache hits in relation to the
number of cache misses. Cache hits are the templates retrieved from the cache. Cache misses are the templates that must
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