[Bug 258611] Re: Korganizer: Terrible delay in mouse action on calendar

[Rigo Wenning]

I have KDE 4.1.2 on intrepid on one machine and hardy with 4.1.2 on my laptop. If I run kontact locally, one may overlook the performance issues described. But I usually have all my email processing and calendering working on my laptop just by ssh -ing into it and thus export the X to the big desktop display. 
While kontact 1.2.9 in KDE 3.5.9 show immediate reaction even in the remote scenario, kontact 1.3 is even unable to show the letters while I type them and has a lag of about 7-10 letters towards the end of a phrase, let alone if one uses backspace. On the (100Mb/s) switch I can see very heavy network traffic while typing.
To isolate more, I used kontact:
1.2.9 in a KDE 4.1.2 session on the Desktop: works fine
1.3 in a KDE 3.5.9 session on the Desktop is just as slow
I tried to start kontact on the Desktop via an ssh from laptop into Desktop and I have the same issue as above. 

And NO, 4.1.2 does not fix anything as this has IMHO nothing to do with
KDE, it is a problem of KDEPim and some changed information exchange
behavior or a different use of buses or something like this. I only know
that 1.2.9 was highly efficient while 1.3 is more or less unusable in
the remote scenario and still somewhat slow in the local scenario. I
tried any type of mixture of KDE 3.5/4.1.2 with kontact 1.2.9/1.3.

It is very interesting to see actually, that while typing in the subject
line, there are no delays, but typing in the message body creates those
terrible delays of letters showing up. I think this is a regression from
some older code that has been used. It may come from some wxWidget stuff
because I faced the same issue with Amaya at some point in time. The GTK
version work while the wx-Version was not usable in a remote scenario.

It is also interesting to see that the scrolling with the mouse wheel
from one week to another in korganizer works faster in the month view
than in the week view.

Ok, now one can tell me that one can't expect such applications to work
over a 100Mb/s network. But it worked before, not having it working now
is a regression either of KDEPim or the generic way KDE transports image
information from the application to the screen.

Note also that I use nvidia cards on both machines... I have no other
application having that issue of slowness. Konqui and dolphin and other
stuff just works fine over ssh.

-- 
Korganizer: Terrible delay in mouse action on calendar
https://bugs.launchpad.net/bugs/258611
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