[Bug 170402] Sluggishness in Kmail under KDE4

[Mark Martinec]

http://bugs.kde.org/show_bug.cgi?id=170402





--- Comment #2 from Mark Martinec <Mark Martinec ijs si>  2008-11-24 18:45:26 ---
> My additional findings with kmail 1.10.1 (using IMAP) is that
> the more messages there are in a currently selected folder,
> the slower the scrolling in the messages list gets, down to
> perhaps 5 lines per second. A response of kmail 1.9.9 under kde3
> is snappy as hell on these same folders and same IMAP server,
> using the same computer. This is with "Thread Messages" turned on.

My frustration level with slooow browsing through threaded messages
eventualy reached the point where I (re)installed the kmail 1.9.10
on this box, so now I'm happy again, it all works very fast again.

Note that unlike in my previous comment, this time the box is still
running KDE 4.1.1 - everything except kmail is KDE 4, just the kmail
application is from KDE 3 (actually, I installed kdepim-3.5.10
from FreeBSD ports, it does not overwrite KDE 4 environment).
This should rule out a possibility that the slowness might be due
to differences in Xorg or KDE 4 environment or in host or network.

My naive guess is that perhaps some good algorithm was replaced
by a less efficient one, which can't cope with IMAP mailboxes
of 10.000 messages, while for kmail 1.9.10 it's a piece of cake.


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