[Akonadi] [Bug 354937] New: constantly high cpu consumption by akonadiserver

[Arthur Schiwon via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=354937

            Bug ID: 354937
           Summary: constantly high cpu consumption by akonadiserver
           Product: Akonadi
           Version: unspecified
          Platform: Kubuntu Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: server
          Assignee: kdepim-bugs at kde.org
          Reporter: blizzz at arthur-schiwon.de

After upgrading to Kubuntu 15.10, thus Akonadi 5.0.51 (btw, not possible to
pick this in the version selector here), the akonadiserver has a constantly
high CPU consumption. Currently, several akonadiserver processes are running,
one consuming between 32 and 35% CPU, others so more around 10% (+-2). The
first corresponding mysqld is eating around 20%, the other two around 10%
(+-2). This is especially annoying when having my laptop unplugged, as it
drains the battery quickly. CPU: i5-2520M CPU @ 2.50GHz (2 cores, respectively
4 threads).

Stopping the server (akonadictl stop), waiting and starting it again produces
same effects as described.

Reproducible: Always

Steps to Reproduce:
1. Boot up and log in…


Actual Results:  
Constantly high CPU usage
Battery Drain

Expected Results:  
Minimal CPU usage (when doing actual work)

Qt 5.5.1, but have seen this with 5.4, too.

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