[mythtv-users] MythTV build story, Part II: x86 versus AMD64?

Michael T. Dean mtdean at thirdcontact.com
Fri Sep 15 18:44:48 UTC 2006

On 09/15/06 14:25, John P Poet wrote:

>What is the current state of MMX/SSE on 64bit?
>When using Myth's "timestretch" feature, it plays HD material *MUCH*
>smoother if I am run the 32bit version of FC5 compared to the 64bit
>version of FC5.  I am pretty sure this is because the 64bit version of
>that code has MMX disabled.

AIUI, there is some MMX code in Myth that hasn't been made to work on 
AMD64/EMT64 platforms because it's generally not necessary (most of 
those CPU's are powerful enough to handle the code without MMX).  But, 
someone who sees a performance issue could always fix things up...


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