Comment 0 for bug 478236
Revision history for this message
| MartinP (bircoe) wrote libffmpegthumbnailer3 causes excessive cpu usage with large libraries | #0 |
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73416ba
(Get the code!)
Binary package hint: mediatomb
1) The release of Ubuntu you are using:
$ lsb_release -rd
Description: Ubuntu 9.10 (it's actually mythbuntu)
Release: 9.10
2) The version of the package you are using:
$ apt-cache policy mediatomb
mediatomb:
Installed: 0.12.0~
Candidate: 0.12.0~
Version table:
*** 0.12.0~
500 http://
100 /var/lib/
3) What you expected to happen:
With ffmpegthumbnailer turned on I expect it to generate thumbnails without causing any odd behaviour.
4) What happened instead:
Browsing large libraries via Playstation 3 seems to cause mediatomb's Memory and CPU usage to be excessive (CPU=197%, Mem=33.6%), I don't know where the problem lies but after a while of generating thumbnails in a folder with 400+ videos (mostly mp4's converted from DVD) the mem usage continually rises and cpu is at 190+% (Core 2 Duo E7300 @ 2.66GHz).
33.6% Memory usage to generate a bunch of 128px thumbnails seems way over the top to me, 33.6% of 4gb is about 1300mb, with thumbnail's turned off it's using around 11mb, 35mb when streaming a 8gb M2TS.
See attached log for more detailed memory usage.
I've checked the mediatomb log's and there doesn't seem to be anything interesting in there, apart from a few warnings about thumbs.db files being corrupt, I'll delete those and see if the same problems occur, I suspect they will, because the problem's happen in folder's with lot's of video's.
One question I have to ask is why is mediatomb 0.12 svn in the repositories of a LTS release of Ubuntu, shouldn't the 0.11 official release have been kept?