[skohan]

Is this really done? It seems like this approach would require all arrays to be allocated with at least a page's worth of memory, which seems incredibly wasteful if you have a bunch of small arrays with a handful of floats or something.

[Someone]

”It seems like this approach would require all arrays to be allocated with at least a page's worth of memory”

I don’t know whether it is done in practice, but you can postpone doing that until the array gets ‘big’, for some definition of ‘big’.

[BubRoss]

Allocating a bunch of small arrays is going to be wasteful (performance wise) anyway. That being said, I'm not sure if this is done frequently or not.