Re: amd64 vs i386
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On 09/15/07 06:03, Martin Marcher wrote:
> 2007/9/15, Ron Johnson <ron.l.johnson@cox.net>:
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>> On 09/15/07 03:57, pietia wrote:
>>> hi
>>>
>>> Do you have any experiences in that competition: Debian amd64 vs Debian
>>> i386 ?
>>>
>>> Is i386 still faster than amd64 ?
>> Since when was i386 *ever* faster than AMD64?
>
> since when was 64bit *ever* faster than 32bit? (speaking of speed here
> not the actual pro of having more address space)
That's not what I asked, and is not what OP asked.
Anyway, the extra 8 registers that long mode offers definitely lets
the compiler create more efficient code. How that contrasts against
larger pointers reducing cache efficiency and bandwidth
effectiveness is app specific.
- --
Ron Johnson, Jr.
Jefferson LA USA
Give a man a fish, and he eats for a day.
Hit him with a fish, and he goes away for good!
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