Mailinglist Archive: opensuse (4631 mails)

[Jan Engelhardt <jengelh@xxxxxxxxxxxxxxx>]

On Jan 21 2007 11:03, J Sloan wrote:
>Randall R Schulz wrote:
>> On Sunday 21 January 2007 09:44, J Sloan wrote:
>>> ...
>>>
>>> 32-bit suse can run on x86_64, but not ia64. It's unlikely that you
>>> have ia64 hardware, so the answer is most likely yes.
>>>
>>> Just curious why you'd want to do that though.
>> 
>> Possible reasons:
>> 
>> 1) Fewer problems with plug-ins.
>> 2) Better performance for many applications or classes of applications.
>
>1. My x86_64 installs defaulted to 32bit browsers, ergo no plugin problems.
>
>2. On my main workstation, glxgears got 10,000 frames/sec with the x86_64
>install, and 7,000 frames/sec with the i386 install, a noticeable difference.


I repeat it again: glxgears is *NOT* an appropriate benchmark.
And I doubt 3000 frames/sec really make a difference since humans
don't notice any improvement above 70 fps.


>Being able to move memory around in bigger chunks can really help things like
>database performance too. *Having* to move data around in bigger chunks might
>not be as helpful for some scenarios, but I can't think of any. Got a specific
>example?

Quite all libc functions profit from it, memcpy using rep movsq as a prime
example.


	-`J'
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