[arch-general] imagemagick 18.104.22.168-1 is slower than 22.214.171.124-1
admin at progandy.de
Sat Oct 18 06:41:37 UTC 2014
Am 18.10.2014 um 08:22 schrieb Lukas Fleischer:
> After a more thorough analysis by Jan, we found out that the issue is
> caused by a bug in the new OpenCL benchmark code. On modern CPUs, the
> benchmark is executed on every start of ImageMagick which leads to huge
> number of __memcpy_avx_unaligned() calls with a small block size. Jan
> prepared a patch and he will submit it upstream.
If you wish to use the current imagemagick version without a recompile
you can set the opencl cache to a missing directory. Then imagemagick
cannot write the cachefile and skips the benchmark.
env MAGICK_OPENCL_CACHE_DIR=/tmp/CACHE_DOESNT_EXIST convert ...
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