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From Jess Holle <>
Subject Re: Performance monitoring
Date Tue, 05 Apr 2005 18:50:29 GMT
What all of these are missing are things like:

    * Overall per web app (not per-connector thread) max and avg request
      time, request concurrency, etc.
    * Overall per web app max and average session concurrency, etc.
    * Percentage of overall CPU time spent in servlet requests, etc

Somewhere one does cross the hazy Heisenberg uncertainty principal line, 
i.e. noticeably impacting performance by trying to hard to measure 

Jess Holle

e wrote:

>On Apr 5, 2005 2:20 PM, Tony Tomcat <> wrote:
>>I started writing a Filter for my tomcat to monitor performance but
>>then I started wondering..  Is there a solution already out there that
>>I can use?  Can I pull data from Tomcat's MBeanServer?
>>What I would like to know is how long my servlets are taking to run.
>>I need the Min, Max and  Average times.   I then would build a servlet
>>to output the data in XML or HTML format.  I also would want the data
>>over the past hour and past 24 hours.
>>Thanks in advance for any pointers or suggestions!
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