[Pharo-project] Accelerated PNG reader

Hilaire Fernandes hilaire.fernandes at edu.ge.ch
Thu Jan 5 10:54:43 EST 2012


Le 05/01/2012 16:31, Hilaire Fernandes a écrit :
> In the past, I remember about some Squeak improvment about the read
> speed of PNG. As far as I remember these optimisation went in Pharo.
> Is it the case?
> 
> Hilaire
> 

Looking at profiling while reading PNG, it seems there is an absent Zip
plugin, is it correct?


>   |        |  6.5% {26ms} ZLibReadStream(InflateStream)>>next:
>   |        |    |4.1% {16ms} ZLibReadStream(InflateStream)>>next
>   |        |    |  |3.9% {15ms} ZLibReadStream(InflateStream)>>pastEndRead
>   |        |    |  |  3.9% {15ms} ZLibReadStream(InflateStream)>>processDynamicBlock
>   |        |    |  |    2.1% {8ms} ZLibReadStream(InflateStream)>>decodeDynamicTable:from:
>   |        |    |  |      2.1% {8ms} ZLibReadStream(InflateStream)>>decodeValueFrom:
>   |        |    |  |        2.1% {8ms} ZLibReadStream(FastInflateStream)>>nextSingleBits:
>   |        |    |  |          1.6% {6ms} ZLibReadStream(InflateStream)>>nextBits:
>   |        |    |1.6% {6ms} primitives




-- 
Dr. Geo -- http://www.drgeo.eu





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