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From "Pavel Pervov (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-5844) [drlvm] class unloading wastes memory
Date Tue, 17 Feb 2009 15:40:59 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-5844?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12674241#action_12674241
] 

Pavel Pervov commented on HARMONY-5844:
---------------------------------------

I see the only possibility how static fields can prevent class unloading - if they point to
the objects of classes loaded by the same class loader as containing class. I made some drawings
on my table and I can't see how it is preventing unloading...

> [drlvm] class unloading wastes memory
> -------------------------------------
>
>                 Key: HARMONY-5844
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5844
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>            Reporter: Alexey Varlamov
>            Assignee: Chunrong Lai
>
> Simple class unloading scenario shows that DRLVM leaks memory (and finally crashes).
To reproduce, run StressTest of lazy.test suite and watch that process gradually consumes
more and more memory. If compared to RI, the last keeps memory flat during very long runs.
> Memory leaks roughly in the same rate for any execution mode, compiled or interpreted.
> For convenience, there is standalone launcher org.apache.harmony.vm.test.lazyresolution.StressTest
which can vary stress load, e.g.: 
> working_vm$ cd build\windows_x86_msvc_release\tests\lazy.tests\classes 
> classes$ java -cp .;junit.jar -Dlazy.test.iterations=100 -Dlazy.test.threads=10 org.apache.harmony.vm.test.lazyresolution.StressTest

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