https://bugs.kde.org/show_bug.cgi?id=338571
--- Comment #28 from Martin Steigerwald <mar...@lichtvoll.de> --- There seem to be three issues in what you observe: 1) There is folder synchronisation when you enter a folder and click mails in there to read them. I don´t have that and for me this operation is, except for few second initial delay to open the folder (any eventual threading work of KMail not counted), instant or almost instant. That may be something for a different bug report to keep that one to the performance on folder synchronisation itself. For Maildir I did a bug report about IMHO superfluous synchronisation (bug #334209). For any excessive folder synchronisation reading mails, if you really see this, this would be worth a different bug. But maybe what you see is the initial folder synchronisation on after you switched to the folder that you see there. Does it really synchronize the folder again and again when reading mails in it? Then I would report this as a different bug (if not already done by someone). 2) As per the title you choose folder synchronisation itself taking a lot of time. And well I can see this here as well. Its easily taking up half a minute or more. And generating a lot of queries. Its not creating much load on my MySQL, but that may be due to creating a lot of load to my IMAP server. I see both mysqld at about 20% of one core and akonadi_imap_resource at about 30% of one core. Now your IMAP is local, and thus will be faster to access and that I think easily explains the higher MySQL load you see. Actually synchroniszing that 24500 mail inbox folder took as much time as typing all of this second point. Easily more than a minute. 3) During folder synchronisation Akonadi blocks out other operations like deleting or viewing mails. I reported this as: [Akonadi] [Bug 334206] New: While maildir resources synchronrizes a folder KMail blocks on switching to a different folder and will change the title of the bug IMAP resources as well now. I bet it may affect *any* resources. I suggest to keep this report about the actual folder synchronisation speed from now on for clarity. -- You are receiving this mail because: You are watching all bug changes.
