Java-Monitor Forum > Forum > Glassfish Administration » physical memory runs dry after few hours
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Old 12-12-2011, 16:11
guus guus is offline
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You'll be surprised how easy it is to analyse a 2GB heap (I know I was). Forget all of the jmap tinkering, and have a look at - I've found it to be exceptionally useful: after a few minutes of pre-processing, it gives you a rather simple graph that tells you were your problem most likely is. It reduced the time I need to do analysis from weeks to hours. If you're not familiar with Eclipse, don't worry - it can be executed as a standalone application as well as an Eclipse plugin.
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Old 12-12-2011, 21:32
cfd cfd is offline
Join Date: Dec 2009
Location: EBBR
Posts: 37

Hi Guus,

You're right, MAT is easy to use even on 2GB but (on my machine) I have to give it some time to process :-)

But, even if I like VisualVM a lot, I think that MAT is more productive in terms of timing.


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