Comment # 6 on bug 1182982 from Fabian Vogt

(In reply to Fabian Vogt from comment #5)
> (In reply to Richard Weinberger from comment #4)
> > But the process consumes 100% CPU all the time. Also when noting is logged
> > (which is most the time the case).
> > 
> > Additionally I run "perf top" on the imap resource process at the point
> > where it consumed 100% CPU:
> >   96.95%  libQt5Core.so.5.12.7            [.]
> > QMetaObjectPrivate::disconnectHelper
> 
> Now that's actually interesting. It shows that the process isn't busy
> processing mail data, but with handling disconnections. This reminds me very
> much of https://bugreports.qt.io/browse/QTBUG-72649.
> 
> Looking at the akonadi code, it's prone to run into the pretty much worst
> case of this:
> https://github.com/KDE/akonadi/blob/3bbbdfb368e36b3866a9b58e282120a65e1074a9/
> src/core/connection.cpp#L247
> 
> If this is the case, it also explains why so far we weren't able to
> reproduce this issue: It becomes worse the longer the process is running and
> the more requests it receives.
> 
> >    1.39%  libQt5Core.so.5.12.7            [.] QMetaObject::activate

Please try libKF5AkonadiCore5 from
https://build.opensuse.org/package/show/home:Vogtinator:boo1182982/akonadi-server.openSUSE_Leap_15.2_Update
once it's built. It contains a workaround for this specific case.