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Slow performance -annotate in ImageMagick 6.5.4-6

Posted: 2009-08-08T14:02:22-07:00
by vadus
ImageMagick 6.5.4-6

Annotating an image is progressively slow by defining a longer text string. Is this a bug? I previously used version 6.3.5, however on a different server and did not encounter any performance problems with this function. With -drow text there are same performance problems. In the test link: http://www.jacobi-partner.de/test/index.php the command line is printed below the output image and convsion time...

Re: Slow performance -annotate in ImageMagick 6.5.4-6

Posted: 2009-08-08T15:37:16-07:00
by magick
Rebuild / reinstall ImageMagick and disable OpenMP:
  • cd ImageMagick-6.5.4-9
    ./configure --disable-openmp
    make
    make install
Does that make a difference? We have found that certain versions of libgomp have a bug that slows ImageMagick down considerably.

Re: Slow performance -annotate in ImageMagick 6.5.4-6

Posted: 2009-08-10T09:06:09-07:00
by vadus
This made a huge difference, thank you a lot. Also other funktions work now much faster...