From: Yukihiro Matsumoto <matz@...>
Date: 2007-05-23T11:00:55+09:00
Subject: Re: Confusing array garbage collection, how to get valid heap snapshot?

Hi,

In message "Re: Confusing array garbage collection, how to get valid heap snapshot?"
    on Wed, 23 May 2007 09:40:04 +0900, Greg Fodor <gfodor@gmail.com> writes:

|Shows that the 1000 objects in the array are still on the heap in the
|second snapshot. Now, I realize GC.start makes no guarantees about
|actually removing the objects marked, but it seems that in this case
|they should go away since I am calling it so aggressively over such a
|long period. What is really strange however is that if I all a.clear
|before setting a to nil, the objects *do* go away upon the first
|GC.start. So, either there is something still holding those references
|in the above case, or the GC is extraordinarily conservative in
|relation to GC.start.

It sometimes happens.  I am afraid the array address is pointed from
somewhere in the machine stack.

							matz.