[amarok] [Bug 370544] GUI Freezes after 4 seconds for about 2 seconds with playlists over 20k songs

[Marax Faraii via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=370544

--- Comment #8 from Marax Faraii  ---
>Which Phonon backend?
>Where are those tracks located (local, remote)?
>Since you use Gentoo: did you try the current git master instead? it is about 
>500 commits ahead of >Amarok 2.8.0, and I see no freezes on track change at 
>all, might well be something already solved.

No, I haven't tested the git master. The GUI freeze isn't a deal breaker for me
as I normally do use smaller playlists and it doesn't affect audio when it
freezes. I reported as I thought it might be worth looking into.

The collection is local.

Amarok Diagnostics

General Information:
   Amarok Version: 2.8.90
   KDE Version: 4.14.24
   Qt Version: 4.8.6
   Phonon Version: 4.9.0
   Phonon Backend: GStreamer (4.9.0)
   PulseAudio: Yes

Enabled Scripts:

Enabled Plugins:
   MySQL Collection (1.0)

Enabled Applets:
   Current Track
   Lyrics

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[amarok] [Bug 370544] GUI Freezes after 4 seconds for about 2 seconds with playlists over 20k songs

[Marax Faraii via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=370544

--- Comment #6 from Marax Faraii  ---
I start with an emply playlist due to the fact you just mentioned. The startup
is very slow. Around 20 seconds. 

My report is about the freezing of the GUI 4 seconds after you change tracks
when you have a big list loaded and not about the startup.

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[amarok] [Bug 370544] GUI Freezes after 4 seconds for about 2 seconds with playlists over 20k songs

[Marax Faraii via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=370544

--- Comment #3 from Marax Faraii  ---
Sad to hear that this is the attitude when it's clearly a bug. If it were a
"side effect" as you so put it all players would have it. 

If there's been many reports about it baffles me even more why there's no
desire to fix it.

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[amarok] [Bug 370544] GUI Freezes after 4 seconds for about 2 seconds with playlists over 20k songs

[Marax Faraii via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=370544

--- Comment #1 from Marax Faraii  ---
Created attachment 101544
  --> https://bugs.kde.org/attachment.cgi?id=101544=edit
Debug output

This is the output from starting amarok from the terminal.

amarok --debug

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[amarok] [Bug 370544] New: GUI Freezes after 4 seconds for about 2 seconds with playlists over 20k songs

[Marax Faraii via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=370544

Bug ID: 370544
   Summary: GUI Freezes after 4 seconds for about 2 seconds with
playlists over 20k songs
   Product: amarok
   Version: 2.8.0
  Platform: Gentoo Packages
OS: Linux
Status: UNCONFIRMED
  Severity: normal
  Priority: NOR
 Component: Playback
  Assignee: amarok-bugs-d...@kde.org
  Reporter: maraxfar...@gmail.com
CC: ma...@laitl.cz

When I have my entire music library in the playlist the GUI freezes after 4
seconds when you change tracks. It gets released after about 2-3 seconds. 
It's the first 4 seconds I'm referring to.

Ex. (seconds)
0 , 1 , 2 , 3 , 4 - freeze - 6 , 7 , and so on

You can change songs before 4 seconds has passed but will freeze regardless
once 4 seconds has passed after changing tracks

Reproducible: Always

Steps to Reproduce:
1. Add 20k songs
2. Change song either manually or automatically
3.

Actual Results:  
GUI freezes

Expected Results:  
GUI not freezing

This happens regardless of database backend. Embedded or external.

In my setup I use Mariadb-10.0.27 and I have had the same results with using
Mysql.

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