Re: GC leaks debugging

[David Daney <ddaney at caviumnetworks dot com>]

On 04/01/2011 01:39 AM, Erik Groeneveld wrote:
> L.S.,
>
> I am debugging memory leaks in the GC of libgcj.  Generally, libgcj
> performs well, but there are some cases in which the heap literally
> explodes over time. I wish to solve this. The OpenJDK vm runs the same
> tests without any leaking.
>
> I compiled GCC 4.6, build with --enable-libgcj-debug=yes and started
> testing with GC_DUMP_REGULARLY=1.  From the results I have a few
> questions to understand it better.  I am still in a phase of
> pinpointing a minimal program to demonstrate the problem, and I would
> like to get hints as to search further.
>
> 1. The finalization table entries keeps on increasing up to 39344
> until it is killed, but the objects which are eligible for immediate
> finalization remains 0.  It seems that no finalization takes place.
> Could you give any hints as to what could be the reason for this?  It
> logs:

You should also look at:

http://gcc.gnu.org/onlinedocs/gcc-4.6.0/gcj/Invoking-gc_002danalyze.html#Invoking-gc_002danalyze

David Daney

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