[FFmpeg-devel] [PATCH] Patch cleanup for MPEG 1 & 2 optimizations
Mon Apr 14 04:22:59 CEST 2008
On Sun, 13 Apr 2008, Michael Niedermayer wrote:
> Can you try with the original patch as well
I saw similar benchmarks to those previously posted (OP's patches had
little/no impact on speed).
The original patch cited here won't apply clean...
Instead of benchmarking that, I took the OP's patches and hardcoded the
values for is_mpeg12. Using that on a short MPEG-1 file I get:
User: avg: 0.201 stddev: 0.005 med: 0.202
Real: avg: 0.207 stddev: 0.005 med: 0.206
OP's patches w/ is_mpeg12 hardcoded true:
User: avg: 0.197 stddev: 0.003 med: 0.198
Real: avg: 0.200 stddev: 0.002 med: 0.200
These are 10 runs each with one cache bake throwaway run at start. So,
about 2% improvement (on core2 duo).
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