And now I have trouble to get it work in a multicore enviroment.
the strangest thing that after a day of putting MAGICK_THREAD_LIMIT to everywhere it worked until the next restart
Webserver with Centos 6.5 final, and plesk 11, convert started from bash script (it's full of MAGICK enviroment variables
env command is showing MAGICK_THREAD_LIMIT=8 (imported from etc/enviroment)
"uid=$5
export MAGICK_THREAD_LIMIT=8
for img in ${path}*.png
convert ..."
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Version: ImageMagick 6.8.9-1 Q16 x86_64 2014-05-20 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2014 ImageMagick Studio LLC
Features: DPC Modules OpenMP
Delegates: bzlib cairo djvu fftw fontconfig freetype gslib jng jpeg lcms ltdl openexr pangocairo png ps rsvg tiff wmf x xml zlib
8 cores and magick only uses 4 of them
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system ("convert -list Resource")
File Area Memory Map Disk Thread Throttle Time
--------------------------------------------------------------------------------
768 1GB 2GiB 4GiB unlimited 8 0 unlimited
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Cpu0 : 1.0%us, 1.3%sy, 0.0%ni, 97.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu1 : 59.8%us, 10.3%sy, 0.0%ni, 29.9%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu2 : 1.0%us, 0.7%sy, 0.0%ni, 98.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu3 : 50.0%us, 2.6%sy, 0.0%ni, 47.4%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu4 : 1.0%us, 0.3%sy, 0.0%ni, 98.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu5 : 23.3%us, 1.0%sy, 0.0%ni, 75.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu6 : 0.7%us, 0.3%sy, 0.0%ni, 99.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu7 : 32.7%us, 9.7%sy, 0.0%ni, 57.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 8183616k total, 1503160k used, 6680456k free, 214636k buffers
Swap: 4194288k total, 0k used, 4194288k free, 515948k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
30847 vva 20 0 364m 225m 2780 R 50.1 2.8 0:01.51 convert