Warp wrote:

> Ger wrote:
>> About 20-30% speed increase should be typical
> 
>    Should be typical on which processor?

Like I said, "I will get my head slapped" :)
But on my setup, which is an AMD64 X2 3800+ , the measured differences were
in that range.

> 
>    A 64-bit binary in a Sun Sparc is not faster than a 32-bit binary.
> The same is probably true in a Macintosh.
>    In the AMD64 there's a speedup when running 64-bit binaries, but
> that speedup has basically nothing to do with the amount of bits.

Running 64bit Suse here and then there's a definite difference between
the "stock" 32bit binary and a self compiled 64bit version

> 
>> Under 32bit OS your max-mem is 3Gb
> 
>    This is based on what? Which OS?

The only comparisons that I can make are between the various Linux versions
I have running here.

> 
>> under 64bit it's 2^64 which is huge.
> 
>    Current hardware probably puts a limit and 2^64 bytes of RAM
> is (in current hardware) not possible.

Agreed, hardware limits how far you can go. The OS however doesn't cut you
short on how far you can take it.
-- 
Ger

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