[mythtv-users] Compiler optimizations

[Michael McConnell]

And yes, I'm fully aware that this is completely impossible and I must be
wrong.

Mike

----- Original Message ----- 
From: "Michael McConnell" <mmcconnell at uniserve.com>
To: "Discussion about mythtv" <mythtv-users at mythtv.org>
Sent: Saturday, February 21, 2004 2:56 PM
Subject: [mythtv-users] Compiler optimizations


> I notice a "somewhat" strange thing today;
>
>     I recompiled mythtv and all the modules with the CXXFLAGS as
>         -03 -march=pentium3 --fast-math -fomit-frame-pointer
>     where as the default is
>         -03 -march=pentiumpro -fomit-frame-pointer
> Having changed nothing else (and having repeated this 2 times)
>
> CPU usage while in livetv, average based on 20 minutes of data (conducted
> twice)
> PentiumPro Optimization
> VMSTAT CPU Usage ~78%
>
> Pentium3 Optimization
> VMSTAT CPU Usage ~49%
>
> Amazing differents.
>
> Mike
>
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