[Zlib-devel] Google's version of zlib code

[Frédéric Kayser]

Thank you, variable runtimes could be related to the fact that Zopfli uses some randomness:
http://code.google.com/p/zopfli/issues/detail?id=10


Le 5 mars 2013 à 00:05, glennrp at comcast.net a écrit :

> 
> ----- glennrp at comcast.net wrote:
>> 
>> ----- Frédéric Kayser <f.kayser at free.fr> wrote:
>>> Hi Glenn,
>>> could you rerun it but force the filter 0 (none) this time? I'm no sure bzip2 and xz really benefit from the filters.
>> 
>>      Method           time   IDAT bytes
>>    original files      n/a    5019516
>> 
>>    pngcrush -brute   310.8    4281038
>>    zopfli --zlib     596.7    4035633
> 
>>    pngcrush default   24.5    4299905
>>    zopfli --zlib     590.4    4047719
> 
>>    pngcrush none      18.6    5136096
>>    zopfli --zlib      98.9    4864938
> 
>>    pngcrush adaptive  17.4    4763290
>>    zopfli --zlib      99.0    5153680
> 
> I reran the tests just to make sure I hadn't
> made some mistake that caused the huge disparity
> in runtimes for zopfli, but it's real.  I'm
> not too happy with the unpredictable runtimes.
> 
> Glenn
> 
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