AMD Athlon64 Systems

Thomas Dodd ted at cypress.com
Fri Oct 17 18:18:30 UTC 2003


Jakub Jelinek wrote:
> On Fri, Oct 17, 2003 at 11:32:06AM -0400, Chris Ricker wrote:
>>On Fri, 17 Oct 2003, Thomas Dodd wrote:
>>>What is the 32/64 bit split in Sparc linux distros? PowerPC distros?
>>
>>Aurora is 64-bit kernel, 32-bit userspace on UltraSparc

Like Solaris then.

> SPARC/PPC are different though. On AMD64, 64-bit code is typically faster
> than 32-bit (e.g. because it has more registers,

Enough faster to notice in something like Mozilla. Will K8 users have 2 
version of mozilla, one for speed and one for 32bit plugins? How hard 
would a wraper plugin be? Something to allow 32bit plugins to work with 
64bit mozilla.

> cheapo pic addressing, etc.), while on SPARC/PPC 32-bit code
> is typically faster.

So did Sun get 64bits wrong ?

	-Thomas





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