[vtkusers] How to visualize thousands of actors with good performance

[Sean McBride]

On Fri, 1 Oct 2010 19:26:31 -0400, Jim Peterson said:

>FWIW, this is beginning to sound like an available memory or paging 
>effect on the timings rather than a simple CPU time issue. perhaps the 
>newer versions require a larger virtual storage load and hit the thrash 
>boundary for paging earlier than older releases. This might be a reason 
>for a knee in the graph of frame rate performance at some number of 
>objects. The knee will likely be at a different point per version 
>depending on the relative storage usage. 

FYI, in our case, there was no paging, since we have gobs of physical
RAM.  However, your comment did inspire us to look at the memory usage,
and indeed it was quite high.  Using a single mapper reduces memory
usage greatly.  Perhaps on Bill's older computer paging is a significant
factor.

-- 
____________________________________________________________
Sean McBride, B. Eng                 sean at rogue-research.com
Rogue Research                        www.rogue-research.com 
Mac Software Developer              Montréal, Québec, Canada