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From "CW \(Chi Wo\) Chung" <>
Subject How to dump out thread information in Tomcat 5?
Date Tue, 31 Jul 2007 21:31:15 GMT
We have configured tomcat to use 150 threads, and once a while the
number was exceeded, and we have this error message.
>>> SEVERE: All threads (150) are currently busy, waiting. Increase
maxThreads (150) or check the servlet status

We know what file to change to increase the thread configuration. We
plan to change it to say 300 or even 500. However, I felt a bit  like
shooting in the dark without knowing whether this number of thread (15)
is exceeded because of normal usage, or due to exceptions/bugs/attack. 

Is there any configuration setting in Tomcat that I can turn on to dump
out the following:

- number of thread being used

-  who invoke which thread and what each thread is doing?

Even a partial answer is better than none.


Thanks very much!!


CW Chung, Wireless Matrix, Mountain View, CA


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