[udig-devel] Re: _slow_ ui performance in Linux with cairo

[Sven Tessmann]

Jesse Eichar <jeichar at ...> writes:
> 
> 
> I'm wondering what work you were doing.  I found some issues with WMS  
> and geoserver that were really slow.  I don't think this has to do  
> with Gabriel's problem but it certainly could be related to Sven's  
> problem since he is on XP.  The XP performance has been acceptable in  
> all of my tests and on much slower machines.  I'm sure I can make it  
> much faster since there has been minimal performance tuning.  Oh I  
> should mention that I have also reduced the number of paints so that  
> makes a huge difference as well.  Now that I think about it Sven  
> probably has a large screen and the number of paints where killing  
> the CPU.  The next release and especially after I finish the  
> Rendering changes.
> 
> However Gabriel's problem is completely different.  Since the  
> performance compared to windows or Macintosh is MUCH worse on linux  
> even though the same code is running.  I'm still trying to learn why  
> that should be.
> 
> Jesse
> 
> On 10-Oct-06, at 3:40 AM, Sven Tessmann wrote:
> 

For my tests I used data from the spearfish dataset (e.g. cities20.shp that 
contains ~35k points) and WMS data sources (MODIS etc.). However you are right 
regarding the screen resolution (mine currently is 1600x1200 at 32bit): when I 
resize the window the performance increases, but to be acceptable the size has
to be really small.

I'm looking forward to the rendering changes.

Sven