[Akonadi] [Bug 338571] Performance Regression: Folder synchronisation in Akonadi 16.08 (actually in any release, starting with KDE 4.14) very slow, compared to kMail from KDE 4.13.x

Philip Allen bugzilla_noreply at kde.org
Sat Jun 6 19:01:27 BST 2020


https://bugs.kde.org/show_bug.cgi?id=338571

--- Comment #50 from Philip Allen <plega-kde at armitstead.com> ---
(In reply to Tore Anderson from comment #49)
> (In reply to Martin Steigerwald from comment #47)
> > Tore, Gunther or someone else who commented here: Could you please check
> > whether you still have those performance issues you reported there with
> > KDEPIM/Akonadi 20.04?
> 
> I can try. I obviously haven't been using KMail in the last few years, but
> now I installed a Fedora 32 KDE VM to perform, upgraded it to Rawhide to get
> KDEPIM/Akonadi 20.04, rebooted it and deleted all files (including hidden)
> in my home directory from a console login (just to make sure what I am about
> to report was not a holdover from the previous Akonadi version in Fedora 32)
> and logged back in.
> 
> The result - just from logging in - is that ~/.local/share/akonadi/db_data
> contains 158 MiB of stuff.
> 
> To be clear: I have *not* started KMail, *not* edited any Akonadi settings,
> or anything like that. The *only* thing I have done is to log in from a
> completely empty user account, start Konsole, run 'du' to check disk usage.
> 
> Yet Akonadi has managed to store 158 MiB of what has to be completely
> pointless stuff. That is beyond comprehension, and certainly does not give
> me any hope that this bug is anywhere close to being fixed, quite the
> opposite. Akonadi's disk and resource usage seems to still be beyond insane.
> 
> That said, I will test towards an IMAP account later and update this bug
> with my findings.
> 
> > If so, it might be good to report it in a new bug since – with my
> > contribution unfortunately, this bug report has so many comments that it may
> > be difficult to make sense out of it for a developer.
> 
> What's the point? The reason why this bug has many comments is that it has
> languished here or almost six years with no developer taking any interest in
> actually fixing it. Why assume a new bug report will be treated any
> differently
> 
> KMail is unusable with IMAP accounts with more than a few thousand messages,
> and it's been like this for years. I can only surmise that this is a use
> case the developers care about (which is fair enough, don't get me wrong, I
> get what I pay for here).
> 
> Tore

I shouldn't laugh.  I've been using mutt for at least five years now, and I
can't imagine ever going back to a GUI for my mail client.

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