Public bug reported:
Binary package hint: dolphin
lsb_release -rd
Description: Ubuntu 8.04.1
Release: 8.04
32-bit
apt-cache policy dolphin
dolphin:
Installed: 0.9.2-0ubuntu6.1
Candidate: 0.9.2-0ubuntu6.1
Simple explanation:
When managing large image files in dolphin using the "previews" mode many
thumbnail-generating sub-processes are spawned causing excessive memory usage
and swap usage (over 2 GB). The computer system essentially "hangs" from the
memory usage.
To duplicate the problem:
Place a handful of large image files (I used 10 tiff files of 45.8 megapixels
each) in a folder.
Open Dolphin and navigate to the folder containing the image files.
Ensure the "Previews" view mode is selected.
Ensure the "Right Sidebar" is enabled.
Simply hold the cursor over the icon of an image file until it tries to load a
preview in the "Right Sidebar"
--A sub-process of kio_thumbnail will be spawned every time the previous step
is repeated with a new file to the tune of 202MB each in my case. (2.02GB
memory usage in this example from kio_thumbnail processes).
The system will begin to slow as the physical memory is exhausted and
all system resources are required to facilitate the swapping.
** Affects: dolphin (Ubuntu)
Importance: Undecided
Status: New
--
Extreme memory usage by kio_thumbnail
https://bugs.launchpad.net/bugs/289338
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