Amarok 1.4.8, mysql, and 8 to 10 s hangs every track change or rating

[Simon ESNEAULT]

Hello,

First of all, i want to say a big thanks to everyone doing here a great job,
amarok is for sure the best player i've ever used, making me rediscover
music !

Here is my configuration:
Amarok 1.4.8 on ubuntu 7.10 (not kubuntu, but all kdelibs are installed)
Mysql, 35 000 songs
Computer is : Athlon XP 2000+, 1.5Go RAM

Everytime the song change, amarok hangs and use 100 % of the CPU for quite a
long time. I wanted to check if anything wasn't going the right way, so I've
build amarok from the source, with full debug options.
Below is the output on a song change. The bold lines are problematic, i
think it's the refresh of the context viewer. When the player is on
wikipedia tab, changing a song is very smooth and doesn't slow the whole
system for some seconds. (but no need to refresh the context view, probably
the key). The same problem show up when I rate a song, causing the context
view to refresh
Strange thing is that showArtistsAlbums() method seems to be called 2 times.
But when the player is on wikipedia tab and switch to the "normal" tab, it's
only called once, making the "hang" time twice shorter

For the context viewer, The size of the cover is changed to 300 pix, use
score and rating, and of course LastFm, but only render similar artist box.
Have i done something unusual ? Is my computer definitely out of date ? Will
it change anything if I run a complete kde session instead of a gnome
session ? Why ? Is khtmlrender thing the main problem ? If it is, I hope
plasma context view won't be so heavy !

amarok: BEGIN: void EngineController::play(const MetaBundle&, uint)
amarok:   [controller] Loading URL:
file:///home/simon/Musique/-%3DAlbums%3D-/-%3D%20D%20%3D-/Deerhoof/2004%20-%20Covers%20and%20Live%20EP/06%20-%20Lose%20My%20Breath%20(My%20Bloody%20Valentine%20Cover).mp3
amarok: BEGIN: virtual bool XineEngine::load(const KURL&, bool)
amarok:     [xine-engine] Before xine_open() *****
amarok:     [xine-engine] After xine_open() *****
amarok:     [xine-engine] XINE_PARAM_EARLY_FINISHED_EVENT enabled
amarok: END__: virtual bool XineEngine::load(const KURL&, bool) - Took 0.2s
amarok: BEGIN: virtual bool XineEngine::play(uint)
amarok: BEGIN: void EngineSubject::stateChangedNotify(Engine::State)
amarok:       [virtual void
Amarok::StatusBar::engineStateChanged(Engine::State, Engine::State)] Line:
153
amarok: BEGIN: virtual void
ContextBrowser::engineStateChanged(Engine::State, Engine::State)
amarok: END__: virtual void
ContextBrowser::engineStateChanged(Engine::State, Engine::State) - Took
0.00021s
amarok: END__: void EngineSubject::stateChangedNotify(Engine::State) - Took
0.0076s
amarok: END__: virtual bool XineEngine::play(uint) - Took 0.008s
amarok: BEGIN: void EngineSubject::newMetaDataNotify(const MetaBundle&,
bool)
amarok:     [Moodbar] Resetting moodbar: /home/simon/Musique/-=Albums=-/-= D
=-/Deerhoof/2004 - Covers and Live EP/06 - Lose My Breath (My Bloody
Valentine Cover).mp3
amarok:     [ContextBrowser] [CUEFILE]: /home/simon/Musique/-=Albums=-/-= D
=-/Deerhoof/2004 - Covers and Live EP/06 - Lose My Breath (My Bloody
Valentine Cover).cue - Shoot blindly and missed, searching for other cue
files.
amarok:     [ContextBrowser] [CUEFILE]: - Didn't find any matching cue file.
amarok: BEGIN: virtual void ThreadManager::Thread::run()
amarok:       [Moodbar] Resetting moodbar:
amarok: END__: void EngineSubject::newMetaDataNotify(const MetaBundle&,
bool) - Took 0.39s
amarok: END__: void EngineController::play(const MetaBundle&, uint) - Took
0.6s
amarok:   [ScriptManager] [ERROR!] Copy Cover:
amarok: [AmaroK CopyCover Script] Received notification: engineStateChange:
playing
amarok:   [xine-engine] XINE_PARAM_EARLY_FINISHED_EVENT enabled
amarok:   [xine-engine] Metadata received.
amarok:   [ScriptManager] [ERROR!] Copy Cover:
amarok: [AmaroK CopyCover Script] Received notification: trackChange
amarok: BEGIN: void CurrentTrackJob::*showArtistsAlbums*(const QString&,
uint, uint)
amarok: END__: void CurrentTrackJob::showArtistsAlbums(const QString&, uint,
uint) - Took 1.3s*
amarok: END__: virtual void ThreadManager::Thread::run() - Took 3s
*amarok: [ThreadManager] Job completed: CurrentTrackJob. Jobs pending: 1
amarok: BEGIN: virtual void ThreadManager::Thread::run()
amarok: BEGIN: void CurrentTrackJob::*showArtistsAlbums*(const QString&,
uint, uint)
amarok: END__: void CurrentTrackJob::showArtistsAlbums(const QString&, uint,
uint) - Took 1.2s*
amarok: END__: virtual void ThreadManager::Thread::run() - Took 5.6s*
amarok:   [ThreadManager] Job completed: CurrentTrackJob. Jobs pending: 0


I'll appreciate any comment on this :o)

Thanks and sorry for my frenglish !
Bye


------------------------------------------------------------------
Simon Esneault
Laboratoire Traitement du Signal et de l'Image, (LTSI, UMR-INSERM 642)
Université de Rennes I, Campus de Beaulieu,
35042 Rennes Cedex, France.
Tel : +33 (0)6 64 61 30 94
Mail : simon.esneault at univ-rennes1.fr
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