Best practises for minimizing memory footprint

cremersstijn Sep 16, 2011 2:16 AM

I'm building an application using JSF/richfaces with ejb/cdi/seam and jpa/hibernate. I want to publish this application to openshift.

But..openshift has a memory limit of 300MB with only 50MB of PermGen space.
When i upload my application to openshift and click a few time, I get an outOfMemoryException due to PermGen space. When i run the application locally on jboss 7. I see that the PermGen Space is around 80MB.

What are the best practises to reduce/minimize the memory footprint?

Thanks!

1. Re: Best practises for minimizing memory footprint

cremersstijn Sep 22, 2011 3:26 PM (in response to cremersstijn)

Please..any suggestions? Or is there another place/forum where i can ask this question?
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2. Re: Best practises for minimizing memory footprint

lightguard Sep 22, 2011 4:07 PM (in response to cremersstijn)

This is the first I've heard of anything. Would you mind sharing the libs in your app? We'll probably have to do some digging to figure it out.
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3. Re: Best practises for minimizing memory footprint

lightguard Sep 22, 2011 4:23 PM (in response to cremersstijn)

I just asked the OpenShift guys. They said PermGen is currently at 85MB and heap is at 95MB if you're able to share the libs you're using, we may be able to find something we can help with. I also recommend adding a support request or even a forum message letting people know what you're using and experiencing.
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4. Re: Best practises for minimizing memory footprint

cremersstijn Sep 25, 2011 2:26 PM (in response to cremersstijn)

Hi!

You can view the source code of my project here: https://github.com/cremersstijn/cremers-mythings/tree/master/mythings-openshift
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5. Re: Best practises for minimizing memory footprint

lightguard Sep 26, 2011 3:04 PM (in response to cremersstijn)

There are certainly some libs that I'm not familiar with. I think you're going to have to do some profiling and see if you can determine where the memory is going (excluding the appserver).
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