How can i see used memory by object?

v2adam Sep 5, 2009 7:37 PM

For the beginning i apologize for my English, I have the problem, I am using Jboss server, and through some time Jboss shows that the memory almost end, I can see total memory (through jmx console) which is used, but how i can see which object used most of memory part or see what objects and how much memory use?

1. Re: How can i see used memory by object?

jaikiran Sep 6, 2009 9:29 AM (in response to v2adam)

See the Sun Java specific -XX:+PrintClassHistogram here http://www.jboss.org/community/wiki/OutOfMemoryExceptions
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2. Re: How can i see used memory by object?

peterj Sep 6, 2009 4:22 PM (in response to v2adam)

JDK 6 comes with VisualVM which will show you heap usage by class. And there are also the jmap and jhat tools that come with the JDK.
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3. Re: How can i see used memory by object?

v2adam Sep 7, 2009 3:08 PM (in response to v2adam)

VisualVM do not show heap usage, because Jboss server is locate remove, and run under Unix.
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