Qt 4.4.0 Performance boost

Dear list,

some very good news.

Yesterday I started playing around with my new application wich has to 
draw 40.000 points 5 times per second. I implement all neccersary 
classes and get started. My computer is a high-end Quad-Core (Win XP, Qt 
4.3.4, qwt 5.1 SVN) and my application brings it to 50% usage and the 
program was unusable due to high reaction times in the GUI. I run VTune 
and saw that most CPU power were lost directly in the QT-libs, not in my 
classes or even in some QWT related stuff.

Yesterday evening I was a bit frustrating at thought about implementing 
increment drawing or level of detail and so on for tuning.

Tomorrow I saw that Qt 4.4.0 is out and thought: give it a try. I 
install it and run my test again. I can't believe my eyes. CPU useage is 
around only 5% and that is caused ONLY (my plots live in a TabWidget, so 
I can hide them that they dont't get updated) by my data acquisition.

My hint for all 'performance-junks' try out QT 4.4.0.

Best Regards,

Ingo

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