Monitoring heap using WebLogic console

Question

Hi,
With WebLogic 6.1 sp3 does monitoring memory usage using the WebLogic console
cause memory to be used up? I have no beans deployed in my WebLogic server,yet
the memory usage creeps up until garbage collected.
Regards,
Don

Answer 1

If the console and the node are one in the same, then there is some
overhead. To test it out in a different light, you set up a single node
cluster (admin node plus 1 managed node). You should see a difference.
"Chandra Bommas" <[email protected]> wrote in message
news:3de2a5d8$[email protected]..
>
Hi Don,
I have seen similar behaviour and have been able to rationalize it in thefollowing
manner.
Weblogic Server periodically/constantly does internal house keepingactivities
for its various subsystems i.e., the ejb Container, the Servlet Container,the
JMS Subsystem etc..
This causes the heap in the JVM to be slowly filled up until the nextgarbage
collection kicks in.
Without knowing the internals of how weblogic is implemented, I would bevery
surprised if opening the console window affects the heap. I would be ofthe opinion
that the management subsystem constantly gathers and publishes this data.The
console would subscribe to this data. One way of empirically determiningthis
would be to open a large number of consoles and check if the memoryconsumption
rate increases.
However, I wouldn't be too worried about this behaviour.
hth,
CB.
"Don Marshall" <[email protected]> wrote:
Hi,
With WebLogic 6.1 sp3 does monitoring memory usage using the WebLogic
console
cause memory to be used up? I have no beans deployed in my WebLogic
server,yet
the memory usage creeps up until garbage collected.
Regards,
Don