Bug 278844 - kio_kamera leaks memory when copying large files from camera
Summary: kio_kamera leaks memory when copying large files from camera
Status: CONFIRMED
Alias: None
Product: kio
Classification: Unmaintained
Component: kamera (show other bugs)
Version: unspecified
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: Marcus Meissner
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2011-07-30 11:11 UTC by Michał
Modified: 2018-08-05 22:41 UTC (History)
1 user (show)

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Description Michał 2011-07-30 11:11:53 UTC 
Version:           unspecified (using KDE 4.6.5) 
OS:                Linux

Takes too much memory when copying files from camera over PTP. It's impossible to copy 2.5GB movie file with 2GB RAM.

Reproducible: Always

Steps to Reproduce:
1. Connect camera (eg. EOS 7D) via USB.
2. Open file manager.
3. Drag&drop file sized over 2GB to local filesystem.

Actual Results:  
Process kio_kamera takes too much memory, which makes system stop (due to swapping). If kernel kills the process due to OOM, Dolphin shows message about kio_kamera process exiting unexpectedly.

Expected Results:  
Process kio_kamera copies file to local fs without storing it in memory first.
Comment 1 Marcus Meissner 2011-07-30 21:21:24 UTC 
The code reads in the whole file from the camera into memory and then pushes it out.

So you are not seeing a memory leak, but more a lack of pass-through mode for data.
Comment 2 null 2018-08-05 22:41:15 UTC 
> pass-through mode
As far as I can tell from a short test, as of v18.07.90 kio_kamera.so still gobbles up memory when copying a large file, so this probably has not been implemented yet.