This is actually an old post from the KDE forum, to which the poster never received a response.
It’s relevant to me as I have a couple of issues to investigate. However journalctl is filled with multiple messages ( around 22 per minute) of the form:
akonadiserver[2429]: org.kde.pim.akonadiserver: ItemRetrievalJob for request 5954 finished
Is there a method to control these notifications?