Issue #744 has been updated by Roger Pack.


> If we knew what wrote these, we might be able to explicitly clear them 
> once
> they go out of scope.  This should result in better significantly GC
> performance all around.

Yeah I've wondered that too.  Maybe we can have a hackfest for it some saturday :)
http://redmine.ruby-lang.org/issues/show/649
is related [and somewhat frustrating to be honest].  My thought is that maybe there's a way to "clear the stack" of data that isn't currently "useful" and thus clear it of old references [I realize this may be hard].

Thoughts?
-=R
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http://redmine.ruby-lang.org/issues/show/744

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