PSD to JPG conversion takes extremely long time

[rylkov]

I used Windows Binary Releases. I did not tried sources yet.

I have downloaded ImageMagick-6.5.9-6-Q16-windows-dll.exe. I noticed that It is identical to ImageMagick-6.5.9-5-Q16-windows-dll.exe. Installation wizard shows me 6.5.9-5 (2010-02-15) version instead of 6.5.9-6 (2010-02-16). I compared two files with use of fc command. Files do not have differences.

I have downloaded ImageMagick-6.5.9-6-Q16-windows-static.exe too. Installation wizard show me 6.5.9-5 again. The speed is the same as in dll-version.

IM creates big file (967 МB) in temporary folder when I convert Sample_PSD_CMYK.psd. And time is extremely long.

My sample is http://www.rylkov.com/IMG_4370_big_psd.zip. My time is 40 seconds. Fortunately this time is not extremely long. Unfortunately other soft and libraries show much better results. And IM shows much better results with other image formats.

[magick]

Its likely ImageMagick is caching the image pixels to disk. To verify, add -debug cache to your command line. See http://www.imagemagick.org/script/archi ... .php#cache for the details. We have a system with 6gb of memory so ImageMagick processed your image entirely in memory in less than 10 seconds.