Memory use saving a gif

[rafaqz]

I'm saving a gif of a boolean array:

using FileIO
cells = rand(Bool(0):Bool(1), 300, 300, 1000)
save("/tmp/test.gif", cells, fps=30)

The file is about 13Mb, but the ram used is 2-3Gb! And it doesn't go back down after save finishes. Eventually it crashes julia when it runs out of memory after a few saves. gc() only frees a small part of the used memory.

A smaller array does not have this effect, there is some kind of tipping point where memory use increases.

imagemagick version : 7.0.7.28-1

ImageMagick 0.5.1
FileIO 0.7.0

Julia Version 0.6.2
Commit d386e40 (2017-12-13 18:08 UTC)
Platform Info:
OS: Linux (x86_64-pc-linux-gnu)
CPU: Intel(R) Core(TM) i7-2640M CPU @ 2.80GHz
WORD_SIZE: 64
BLAS: libopenblas (DYNAMIC_ARCH NO_AFFINITY Sandybridge)
LAPACK: libopenblas
LIBM: libm
LLVM: libLLVM-3.9.1 (ORCJIT, sandybridge)

[timholy]

I can't replicate this anymore (Julia 1.3).