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Subject: Re: [PHP-DEV] 64 bit RFC, #2 and #3 yes
From: php@hristov.com (Andrey Hristov)

Anatol,

>> There might be more, I gave a glance look at it. I'm curious to see how
>> much memory real scripts will use with the branch.
>>
> In fact, while 64 bit programs take more memory that 32 bit ones, the
> exact advantage of the 64 bit systems is that the amount of that memory is
> bigger. So comparing a program on 32 bit system with 2G (without
> extensions) and the same program on 64 bit system with 8G memory - while
> the program size itself increases, the relative increase opposing to the
> system memory is smaller. Significant memory increase is only to expect
> when using huge amounts of data split into small pieces, say you have
> millions of string buffers of 3 byte length - in that case it'll need the
> same amount of pointers which are 4 vs 8 bytes big on 64 bit. Stack
> variables are of less importance for that.

I meant on 64 bit vanilla PHP vs the branch

> Regards
>
> Anatol
>

Andrey