Tell me more ×
Software Quality Assurance & Testing Stack Exchange is a question and answer site for software quality control experts, automation engineers, and software testers. It's 100% free, no registration required.
up vote 2 down vote favorite

My application is causing heap thrashing. I have the heap dump but I don't know how and where should I start to look for problems?

This is a 6 GB dump. Please recommend some suitable heap analysis software?

share|improve this question
Have you tried any of the Java heap analyzer tools listed under bit.ly/Y1phHO? – user246 Jan 24 at 18:54
Thanks. I started with JProfiler but it was getting stuck while loading the heap. Now, I am using Eclipse MAT. I thought it is good to ask, as some tools can be more optimal for high scale. – Asad Iqbal Jan 24 at 18:57
1  
Any chance you could reproduce the problem with a smaller maximum heap size? – user246 Jan 24 at 19:11
The issue was identified in a production environment, and I didn't know the specific user input. After some investigation using Eclipse MAT, it seemed that one thread was holding to a HashMap for maintaining context. And one user-input processor (one of many handlers which process user input) had 800,000 objects of one class in that map. For now, I handed over the problem to author of that class. Either, it was a very big input which should be stopped before it enters our system OR we need to change design in that handler. – Asad Iqbal Jan 25 at 22:47

Know someone who can answer? Share a link to this question via email, Google+, Twitter, or Facebook.

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.