[Wrapper-user] JVM appears hung: Timed out waiting for signal from JVM on AIX 5.3

[Mayes, R. <Reb...@G1...>]

I have the same problem many others seem to have- the wrapper sometimes
doesn't get a response from the JVM within the timeout period, so it
shuts it down:

 

JVM appears hung: Timed out waiting for signal from JVM.

JVM did not exit on request, terminated

 

>From everything I've read on the web, the solutions are:

1.	Extend the timeout period (risking a longer hang when there's a
"real" problem)
2.	Do what you can to make sure the JVM is not overburdened.

 

My questions are:

1.	We predominantly see this on AIX. Is there some special problem
with IBM's JVM and the wrapper? We have Java 1.5  SR4 on our test
machine and I am going to try updating it to the latest (SR6) today.
2.	Will reducing the memory allocated to Java help? Currently,
we're using wrapper.java.initmemory=1024 and wrapper.java.maxmemory=1024
on a box with 1.8 GB of RAM.
3.	Any other suggestions?

 

Thanks!

Rebecca Mayes

Manager of CDQ/DI Quality Assurance

Pitney Bowes Software 
 
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