Increasing vector multiplier on 64-bits systems

[chris]

Hi!

I apologise if this turns out to be a stupid comment, but I was thinking 
about the recent discussions about how much size we should reserve for 
vectors as they grow. It occurs that on a 64-bit system, and once a 
vector has got bigger than a single memory page, is there any good 
reason not to increase it's size by 4, or even 10 or 100 when we it 
grows beyond it's current bounds? There is no risk (at least for a long, 
long time) of filling the memory on a 64 bit system even if we 
overallocate every variable by a factor of 10,000, or even more.

Except for possible problems of inefficencies because objects are spread 
out across memory(and I don't know enough about this.. sorry), there 
really shouldn't be much reason to ever reallocate anything, as we could 
just give every vector 1GB of space to start with, and expand it to 32GB 
if it overflows that.

Any comments welcome :)

Chris