Heatmap has memory leak

[qgib]

Author Name: Aren Cambre (Aren Cambre)
Original Redmine Issue: 6691
Affected QGIS version: 1.8.0
Redmine category:c++_plugins

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I have been running a heatmap for 12 hours now on a layer with just over 700,000 points. Except for specifying input layer and output, I accepted defaults when I kicked it off.

qgis.exe's memory usage gradually rose throughout the running of this heat map, starting at around 150MB and gradually ballooning to almost 1.7 GB, which is dangerously close to the Windows 2 GB 32-bit process limit.

The gradual increase in memory usage was a lot faster at start. Now (12 hours later) it may increase by 1K every few minutes.

I am guessing there is a memory leak because running a GRASS v.kernel heatmap on the same dataset never consumes more than 200MB of RAM.

Also, not sure if this matters, but my output TIFF file is currently 933 KB and hasn't been touched since 1 hour after I kicked off this job. If that's not expected behavior, that suggests that something has gone over the cliff on processing and is taking too long to continue progress.

Currently, the heatmap feature is hammering one of my cores (this really needs multithread!).

[qgib]

Author Name: Aren Cambre (Aren Cambre)

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qgis finally conked out and crashed at about 12.5 hours.

[qgib]

Author Name: Aren Cambre (Aren Cambre)

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• crashes_corrupts_data was changed from 0 to 1

[qgib]

Author Name: Aren Cambre (Aren Cambre)

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• category_id was configured as C++ Plugins

[qgib]

Author Name: Giovanni Manghi (@gioman)

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• priority_id was changed from Normal to High

[qgib]

Author Name: Nathan Woodrow (@NathanW2)

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Fixed in changeset "9a81fa760993ef8cc5c5f0829f635cbaf2c4e63b".

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• status_id was changed from Open to Closed