[REBOL] Re: mem2.r
From: aroberts:swri at: 9-Oct-2001 13:17
I can't find the mem2.r at the Rebol site. Do you have a web site with it?
Regards,
Aaron R>
Romano Paolo Tenca wrote:
> I have uploaded in the rebol library "mem2.r" with a set of functions to test
> memory usage of everything in rebol.
> I should like to know bug and some results on differents OS. I use W98.
>
> The first things i have discovered is that everything use 16 bytes of memory
> (even a char) because everything is in a block and every position in a block
> use 16 bytes.
>
> A void block ([]) is 32 bytes.
> A simple path (a/b) is 112 bytes.
> A function like help allocates 29040 bytes.
> func [][] allocates 288 bytes.
> use [][] allocates 224 bytes
> make object! [] allocates 176 bytes
>
> A string of len 0 and a string of len 13 uses the same memory, from 14 to 29
> the memory used is the same, then there is another allocation of 16 bytes and
> so on, so the first 3 byte are used for something else.
> Analog behaviour for issue and others dataypes.
>
> Rebol is 16byte dependent, at least under w98 but i do not think this change
> from os to os.
>
> ---
> Ciao
> Romano
>
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Thank you,
Aaron Roberts
Southwest Research Institute
Advanced Simulation Technologies Section
(210)-522-5137
www.swri.org
