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Memory leak #155

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GunnarFarneback opened this issue Sep 26, 2014 · 2 comments
Closed

Memory leak #155

GunnarFarneback opened this issue Sep 26, 2014 · 2 comments

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@GunnarFarneback
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I'm seeing substantial memory leakage when using matread to read a 16 MB file saved from Matlab in v7.3 format. The sequence of matread() and gc() increases process size (as measured by top) by 10-50 MB per iteration.

I guess #136 is a possible suspect although I don't know whether it can explain the amount of lost memory. It could of course also be an issue with MAT.jl but it seems more likely to originate in the hdf5 library interaction, so I file it here.

The mat file in question has too sensitive content to share it but I have constructed a smaller file (232 kB) with randomized data that I can make available on request. For that file the leakage is on the order of 0.5-1 MB per iteration, so still quite noticeable.
@simonster
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If you can send the file to simon@simonster.com I'll take a look.

simonster added a commit that referenced this issue Oct 1, 2014
@simonster
Fix memory leaks
70cfcc1 
- Free or manage memory for strings
- Ensure that datatypes are closed when necessary

Fixes #136, #155
@simonster
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Fixed by 70cfcc1

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@simonster @GunnarFarneback