Hi Friedheim, I agree with Domenico. SCADA using SVG synopthics is my main job, since over 2 years. I have several examples of SVG's taking almost no CPU.
The worstest problem (I'd say "fault") of SVG is that you cannot control how much the SMIL animation can eat CPU. So most of the time you have to manage the code (losing even lot of time) to adjust animations so that the CPU is within acceptable margins. Don't refuse the Javascript+DOM animation: in many situations it would be convenient. Cheers Mario On Monday 21 February 2005 11:56, friedhelmeichin wrote: > I am trying to build a scada mmi prototype with svg. For this I used > a background image (1024x768 *.png or *.jpg file) and in foreground > some simple dynamic controls like "led, bargraph, text, symbol,...). > To get the dynamic behaviour, I used JavaScript and the DOM to change > some attributes (text, color, visibility,...) of the controls once > per second. > > I work with IE+ASV to show this graphic. There I get a really bad > performance (97% CPU usage, 3s interval instead of 1s), if I don't > use the attribute image-rendering="optimizeSpeed" at the background > image element. > When I use "optimizeSpeed" performance is ok, but I am not sure, if > the quality of the graphic is sufficient for a comercial product. > > Is this a typical behaviour? > > Are there other ways to increase performance? > > I am looking forward to get response from anybody, who has some > experience in this case. > > Regards > Friedhelm > > > > > > ----- > To unsubscribe send a message to: > [EMAIL PROTECTED] -or- > visit http://groups.yahoo.com/group/svg-developers and click "edit my > membership" ---- > > > > Yahoo! Groups Links > > To visit your group on the web, go to: > http://groups.yahoo.com/group/svg-developers/ > > To unsubscribe from this group, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. ----- To unsubscribe send a message to: [EMAIL PROTECTED] -or- visit http://groups.yahoo.com/group/svg-developers and click "edit my membership" ---- Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/svg-developers/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
