[XviD-devel] Change 2 bits <-> 2 percent speedup

[Christoph Lampert]

Okay, forget the 2%. They disappeared in my re-check a few hours later. 
Still, higher CACHE_LINE won't hurt.

gruel

On Tue, 18 Feb 2003, Christoph Lampert wrote:
> Hi,
> 
> please try thing on your machine: 
> 
> When I changed in portab.h 
> 
> #define CACHE_LINE 16 
> 
> to
> 
> #define CACHE_LINE 32 
> 
> XVID got faster by 2 percent. This was on Pentium3 where cacheline
> actually _is_ 32 byte. On Athlon or P4 you might want to try 64 
> (changing even 4 bits). 
> 
> gruel 
> 
> 
> 
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