Bug 196314

Summary: akonadiserver takes 100% cpu for hours
Product: [Frameworks and Libraries] Akonadi Reporter: Wolfgang Rohdewald <wolfgang>
Component: serverAssignee: Volker Krause <vkrause>
Status: RESOLVED UPSTREAM    
Severity: normal CC: bughunt
Priority: NOR    
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: unspecified   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Wolfgang Rohdewald 2009-06-13 11:37:15 UTC 
Version:           Unbekannt (using 4.2.90 (KDE 4.2.90 (KDE 4.3 Beta2)), Kubuntu packages)
Compiler:          cc
OS:                Linux (i686) release 2.6.28-11-generic

I started kde 4.3 beta2 this morning, about 5 hours ago. Now after leaving the systm alone for some hours, akonadiserver runs at 100% CPU and a usage of over 4 hours CPU. Sorry, I did not copy that line of htop.

Now, after doing akonadictl start CPU usage is normal. But I get 83652 lines of mostly error messages (enabled all *akonadi* in kdebugdialog). This looks like the resolved bug 193249, but I have 4.3 beta2 which should have the fix I believe.

Most lines look like

[/usr/bin/akonadi_nepomuk_contact_feeder] "/usr/bin/akonadi_nepomuk_contact_feeder(18445)" Error in thread 3046606592 : "org.freedesktop.DBus.Error.ServiceUnknown - The name org.kde.nepomuk.services.nepomukstorage was not provided by any .service files"
[/usr/bin/akonadi_nepomuk_contact_feeder] "/usr/bin/akonadi_nepomuk_contact_feeder(18445)" Error in thread 3046606592 : "Unsupported operation (2)": "Invalid model"
[/usr/bin/akonadi_nepomuk_contact_feeder] "/usr/bin/akonadi_nepomuk_contact_feeder(18445)" Error in thread 3046606592 : "Unsupported operation (2)": "Invalid model"
[/usr/bin/akonadi_nepomuk_contact_feeder] "/usr/bin/akonadi_nepomuk_contact_feeder(18445)" Error in thread 3046606592 : "Invalid iterator."
Comment 1 Volker Krause 2009-11-13 09:14:00 UTC 
D-Bus event loop bug in Qt 4.5.1, fixed in newer Qt versions.
Comment 2 David Tonhofer 2016-01-26 22:27:24 UTC 
Well, 100% CPU for 15 hours straight is still a thing 6 years later, with akonadi-1.13.0-16 and qt 4.8.6. 

Must be another bug. Probably.