[Kroupware] Slow startup with many calendar entries

[Andreas Gungl]

Hi,

as merging of calendars works from Kroupware client RC1 on, I started to merge 
my calendar from my regular installation's KOrganizer file.

I merged about 370 calendar entries plus about 45 todo entries using RC2. 
Afterwards I synced with the Kolab server to make my entries permanent on the 
server. Uploading took some time, however I didn't care so much about it.

I finished KMail and wanted to open it again some minutes later. Here begins 
the nightmare. KMail is ugly slow reading the single calendar entries, every 
time an entry is read a growing number of lines gets written to stdout 
(libkcal: Write event ...). Same problem occurs when refreshing the local 
IMAP cache. In the calender folder, the refresh of the cache starts fast 
enough but slows down significantly the more entries have been read. While 
KMail is usable during the refresh, the startup is really a problem. I have 
to wait more than 5 min until KMail appears on the screen. In this time I can 
do nothing (except using another program in the meantime). BTW, I'm using a 
Toshiba Tecra 8100 with PIII 800 and 256 MB.

Well, one can argue that I should archive some of the events, however IMO 
those 370 entries actually don't seem very much to me. At least, having only 
about 120 entries in the calendar folder, the startup takes only 90 sec on my 
system, which leads to the assumption, that the time is growing potentially 
to the number of entries.

I hope you find a way to correct the current behaviour, i.e. make the startup 
time at least linear to the number of entries. This would help a lot. When I 
then reach a certain limit, then I would start to use archiving.

Regards,
Andreas

BTW, I had two crashes of the kroupware client on my system, but I didn't 
bother with backtraces. As I have compiled with enable-debug (the two 
kroupware packages only), I just want to ask whether you are interested in 
backtraces or not. If yes, then I would provide it next time a crash occurs.