[Kde-pim] KOrganizer4 Is Sooo Slow

[Allen Winter]

On Sunday 04 November 2007 20:51:16 Cornelius Schumacher wrote:
> On Monday 05 November 2007 02:38:33 Allen Winter wrote:
> >
> > Finally we know why KOrganizer is so slow.
> >
> > In CalendarLocal::rawEventsForDate:
> >       if ( event->dtStart() <= kdt ) {
> >         KDateTime end( event->dtEnd().toTimeSpec( event->dtStart() ) );
> 
> The toTimeSpec call looks like it could spend a lot of time. Is this actually 
> the case?
> 
> Why don't we convert the datetimes to UTC when saving the event?
> 
> >         if ( event->allDay() ) {
> >           end.setDateOnly( true );
> >         } else {
> >           end = end.addSecs(-1);
> >         }
> >         if ( end >= kdt ) {
> >           eventList.append( event );
> >         }
> 

      //old code: much, much faster
      if ( event->dtStart().date() <= qd && event->dateEnd() >= qd ) {
        eventList.append( event );
      }

      //new code: much, much slower
      if ( event->dtStart() <= kdt && event->dtEnd() >= kdt ) {
        eventList.append( event );
      }
      where, kdt = KDateTime(qt,timespec);

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