Legacy ImageMagick Discussions Archive

Performance are better but still, i would have tought that on the Xeon i would get much much better performance than on my laptop. I tested on a dev server which is pretty similar to my production environement. This dev environment got an AMD Opteron 2376 and I still get slightly better performance ...

It's build with OpenMP but i only have 1 core assigned to my VM. But when i run the command
on my laptop to compare i user -limit thread 1.

Hmm think i found a big part of the problem : the thumbnail option time convert 'TestByDaniel.jpg' -quality 80 -thumbnail 'x232' -gravity north -crop '232x232+0+0' -colorspace RGB jpg:TestSmall_thumbnail.jpg 2>&1 Average 377ms time convert 'TestByDaniel.jpg' -quality 80 -resize 'x232' -gravity north ...

I switched my jpeg library for the turbo one, recompiled/installed imagemagick but i still have the same result, here's a debug cache for both environment Server XEON (production) 2013-10-11T12:03:30-04:00 0:00.010 0.000u 6.8.6 Cache convert[16072]: cache.c/DestroyPixelCache/956/Cache destroy 2013 ...

Another thing i just noticed, my cpu on the server is spiking a nearly 100% on the convert command, while on my laptop
I hit between 10-15% usage.

I'm loosing a bit of speed on my laptop with the debug all option but it's still faster then on my the server without debug [TestByDaniel.jpg] JPEG Trace: " 4 8 4 5 2 3 2 15" 2013-10-11T10:45:21-04:00 0:00.000 0.000u 6.8.6 Coder convert[6010]: jpeg.c/JPEGWarningHandler/359/Coder [TestByDaniel.jpg ...

Adding more info, i runned the command with some debug here's the output : 2013-10-11T10:23:59-04:00 0:00.000 0.000u 6.8.6 Coder convert[13936]: jpeg.c/JPEGWarningHandler/359/Coder [TestByDaniel.jpg] JPEG Trace: "Start Of Scan: 3 components" 2013-10-11T10:23:59-04:00 0:00.000 0.000u 6.8.6 Coder ...

I i've been testing Imagemagick 6.8.6 q8 with open mp on my laptop with 800ko jpg image time convert 'TestByDaniel.jpg' -quiet -quality 80 -thumbnail 'x232' -gravity north -crop '232x232+0+0' -colorspace RGB jpg:TestSmall.jpg 2>&1 real 0m0.144s user 0m0.308s sys 0m0.040s It gives me a 144ms convert ...