Imagemagick not using enough memory
Posted: 2012-05-21T15:48:37-07:00
I've found lots of posts about limiting Imagemagick's memory consumption. My problem is the opposite - our server is processing a large batch of images, and it appears as though "convert" is using no memory, and the excess of disk usage is causing the server to grind to a halt.
Relevant information
My command:
ImageMagick info:
top output:
This is running on CentOS Linux, being run by PHP through the command line.
There are no active policies in policy.xml.
To be clear, I have looked at the documentation I could find about -limit, and I think the setting we have is good. I would like convert to use up to 512mb of memory, but for some reason it seems to be behaving as though the memory limit is 0.
Relevant information
My command:
Code: Select all
nice convert -limit map 512mb -limit memory 512mb -size 1000x1000 -quality 85 -flatten -scale 1000x1000 '/opt/lightbox/appfiles/thumbs/thm9c0qIj/fullkhzbBJ.jpg[1000x1000]' '/opt/lightbox/appfiles/thumbs/thm9c0qIj/usrqGlJJI.jpg'Code: Select all
convert -version
Version: ImageMagick 6.7.6-9 2012-05-06 Q16 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2012 ImageMagick Studio LLC
Features:
Code: Select all
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2223 apache 39 15 36208 2988 2180 R 97.0 0.0 0:03.11 convert
There are no active policies in policy.xml.
To be clear, I have looked at the documentation I could find about -limit, and I think the setting we have is good. I would like convert to use up to 512mb of memory, but for some reason it seems to be behaving as though the memory limit is 0.