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RE: [aspectj-users] RE: Aspect java heap error
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In my experience AspectJ load-time weaving can significantly increase the
memory requirements of a program, especially if you weave into every class
in a system. Glassbox ships with slightly modified AspectJ that uses a lot
less memory. See these bugs for more discussion:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=148773
https://bugs.eclipse.org/bugs/show_bug.cgi?id=166246
In essence, AspectJ head (and 1.5.3) keep a bytecode copy of every class
every woven in memory to ensure consistent behavior should class GC evict a
class. I think that's too high a price to pay for correctness. E.g., in a
simple test I measured 300% total system memory overhead for that strategy
versus evicting weaving state.
HTH,
Ron
-----Original Message-----
From: aspectj-users-bounces@xxxxxxxxxxx
[mailto:aspectj-users-bounces@xxxxxxxxxxx] On Behalf Of Ramakrishnan
Meenakshi Sundaram
Sent: Monday, September 10, 2007 7:35 PM
To: aspectj-users@xxxxxxxxxxx; 'Eric Bodden'; 'Andy Clement'
Subject: [aspectj-users] RE: Aspect java heap error
Hi
I had set the heap size with parameters -Xms64m -Xmx512m.Still I got the
heap space error. Are LTW memory requirements so high? Are there any
guidelines / online documents about this?
Thanks in advance,
Regards,
Ramakrishnan
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