Re: [Brain-list] Some thoughts!

[Manuel T. <ma...@sp...>]

Hi matju

> but: do you do any malloc()/free() to allocate the above bytes? if yes,
> then you are using more than that amount, and, depending on the number of
> allocations and the allocator used, maybe much more than that. OTOH, if
> you are doing your stuff via fixed-size cons cells, then you have a much
> slimmer overhead.
You are right about the malloc/new overhead, and actually my equation is not 
entirely accurate because:
1> I forgot 3 more words used by the hashtable (for size, capacity and ptr to an array) and
2> The 4 words per slot are an approximation because the hashtable uses an array
of linked nodes. 3 words come from the node and 1 from the array. But the size
of the array can be more or less that the number of entries in the table.

But the point of this really was just a rough comparison between the current and the
new objects implementation's memory footprints.

Later I may be able to optimise things further (ex by writing a copying GC).

Manuel