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From James Black <>
Subject re: on adjusting incoming queue
Date Mon, 29 Aug 2005 22:42:22 GMT
Hash: SHA1

- From what I understand there are two queues in Tomcat, and incoming
queue and an execution queue. It appears tomcat is rejecting some
clients when too many people try to hit my server at one time. During
this time the cpu utilization was about 80%-95%, which probably
exacerbated the problem.

I hope I am understanding what the incoming queue is for, as, if the
size of the queue is 10, and 12 clients try to hit the server at the
same time, then 1 or 2 clients will get an error back from tomcat.

If I adjust the size of the incoming queue so that it is larger than the
current value of 10 might that cause problems with other parts of tomcat?

I don't seem to hit the limit of 150 threads on the execution queue, but
I did see it get to 109 threads in use at one point.

Is there any way to monitor how many connections are rejected because
the incoming queue is full?

I am using Tomcat 5.5.9, on Solaris 9 with jdk1.5.

Thanx for any help.

- --
Corruptisima republica plurimae leges. [The more corrupt a republic, the
more laws.]
Tacitus from Annals III, 116AD
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