[vtk-developers] Performance tuning

[Clinton Stimpson]

I just had a try... it is much better, but I'd like to see more improvement.
For my test case, vtk 4.2 can do about 32 frames a second, and vtk cvs 
will now do about 3 frames a second.
Do you want another profile of this?

Clint

Ken Martin wrote:

>I have checked in my first batch of pipeline optimizations. Brad and I are
>still looking into remaining bottlenecks so there may be more optimizations
>still to come but I wanted to get this first batch committed. So.... on my
>test case which has a lot of little actors that do not change, each with a
>~6 filter pipeline I am seeing about an 8X speedup in rendering times and
>about a 10X speedup in total execution times. The current performance is
>still slower than VTK 4.4 but we may still have some improvement left in
>there. So far all of the performance improvements were pretty clean. The
>composite data pipeline (aka multiblock and AMR) has not been looked at
>carefully yet so it may still have some significant overhead in it. We will
>look into that soon as well. If you do have a slow test case I would be
>curious to hear how these changes impact your results.
>
>Thanks
>Ken
>
>
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