[mythtv-users] Re: Status of MythTV in 64bit-FC_land

Brad Fuller bradallenfuller at yahoo.com
Fri Apr 29 00:09:22 UTC 2005


Axel Thimm wrote:

>On Wed, Apr 27, 2005 at 08:36:18AM -0700, Brad Fuller wrote:
>  
>
>>Axel Thimm wrote:
>>
>>    
>>
>>>You do loose some performance currently due to MMX not working under
>>>64 bits.
>>>      
>>>
>>Really? Are you refering to the sw part taking advantage of the HW? I 
>>haven't heard of any chip issues.
>>    
>>
>
>It doesn*t build w/o turning off MMX.
>  
>
Well.. crummy! Why is that? (should I ask in the devel forum?)

Does anyone have benchmarks, or even off the top of your head knowledge, 
on the performance difference w/o MMX on 64-bit vs. w/MMX on 32-bit. For 
mythtv, is having MMX a decided "got-to-have"feature for performance?
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