[FFmpeg-devel] MAX_THREADS for ffmpeg-mt mp4

[Michael Niedermayer]

On Wed, Sep 23, 2009 at 12:41:05PM -0700, Frank Barchard wrote:
> This change benefits ffmpeg-mt for mp4.
> With the old value, you were limited to 8 threads, and a crash would
> occur if you set more than 10.
> 
> Here is a benchmark (chromium media_bench) of number of threads on an
> 8 core / 16 thread Nehalem.
> It shows performance continues to improve beyond 8 threads.
> 
> Threads vs Time/Frame (ms)
> 1 ? 13.14
> 2 ?   7.31
> 3 ?   5.73
> 4 ?   4.07
> 5 ?   4.50
> 6 ?   3.82
> 7 ?   3.21
> 8 ?   2.93
> 9 ?   2.62
> 10 ? 2.40
> 11 ? 2.19
> 12 ? 2.03
> 13 ? 1.92
> 14 ? 1.83
> 15 ? 1.76
> 16 ? 1.70

well, if that helps that much then ok

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Many that live deserve death. And some that die deserve life. Can you give
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