On Mon, Sep 10, 2012 at 8:58 AM, Stefan Monnier <monnier@iro.umontreal.ca>wrote:

> That sounds weird, indeed.  An explanation that comes to my mind
> goes along the following lines:
>
>    little change in code
>    => slight change in some part of the dump process
>    => memory allocation pattern at that point is different
>    => some memory zone that used to be `free'able now can't be freed any
>       more because some surviving object is now placed in that zone rather
>       in some other zone.


Interesting.


>

IOW the actual live data is pretty much the same, but the larger binary
> has a lot more memory that's "allocated from the OS but kept in some
> free list".  How do the
>
>    Pure-hashed: <FOO>
>    Dumping under the name emacs
>    <BAR> pure bytes used
>
> compare between the two builds?


I'll check and report back.