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| author | Michael Niedermayer <michaelni@gmx.at> | 2008-01-22 14:45:20 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2008-01-22 14:45:20 +0000 |
| commit | 8f738eea4373cdb5b7c3bb42739d2b98aabac34d (patch) | |
| tree | 93d38f219969991caa4c46a5818f7a8f2738882c /doc/optimization.txt | |
| parent | e5b10e31745f33c3d7af7986a1ad7d15746b5af4 (diff) | |
"What speedup justifies an optimization" section
Originally committed as revision 11595 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'doc/optimization.txt')
| -rw-r--r-- | doc/optimization.txt | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/doc/optimization.txt b/doc/optimization.txt index f42eaba12c..61dc5c40a6 100644 --- a/doc/optimization.txt +++ b/doc/optimization.txt @@ -23,6 +23,15 @@ and how they can be optimized. NOTE: If you still don't understand some function, ask at our mailing list!!! (http://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-devel) +What speedup justifies an optimizetion? +Normaly with clean&simple optimizations and widely used codecs a overall +speedup of the affected codec of 0.1% is enough. These speedups accumulate +and can make a big difference after a while ... +Also if none of the following gets worse and at least one gets better then an +optimization is always a good idea even if the overall gain is less than 0.1% +(speed, binary code size, source size, source readability) +For obscure codecs noone uses, the goal is more toward keeping the code clean +small and readable than to make it 1% faster. WTF is that function good for ....: |