High memory consumption during push

[Andrew Bennetts]

Robert Collins wrote:
> On Tue, 2008-07-01 at 11:17 +1000, Andrew Bennetts wrote:
> 
> 
> > (Yes Robert I know iter_all_entries is evil :)
> 
> It also underestimates the memory used when bisecting through the index:
> there we store things differently again.

Right.  I was aware of that, but didn't worry about investigating that further
when it was clear that the lower bound was already quite high!

Thanks for making that explicit for other people reading this, though.

-Andrew.