Re: [pygccxml-development] Performance regression?

[Allen B. <al...@vr...>]

Thanks to Roman's most recent changes, the performance problem I was 
running into has been removed.

My new timings are:

Code generation complete.  took: 219.872961044
   ...
   module builder init: 115.682010889
   ...
   build creators: 11.5951149464
   write module: 67.6457870007

The summary is that Roman has succeeded in making Py++ ~25x faster 
overall for my test case and he has made the building of creators run 
~170x faster.  I for one am very happy with that increase. :)

Thanks a million Roman.  This single set of changes will save me hours 
and hours of waiting.

-Allen


Allen Bierbaum wrote:
> One of the big projects I use Py++ with seems to be suffering from
> performance issues.  I used to be able to generate the bindings in
> approximately 10 minutes, now it is taking a little over 80 minutes.
> 
> I have been so happy with Py++ as of late that I haven't even been
> paying attention to the changes going into Py++ so I don't know what may
> be causing the slow down.  :)
> 
> I did collect some timing information though in the hopes that someone
> smarter then me may be able to spot some corners of Py++ that could be
> optimized.
> 
> During my run I output basic timings of:
> 
> Code generation complete.  took: 5099.32698894
>      ...
>      module builder init: 253.73842907
>      ...
>      build creators: 1991.69337511
>      write module: 2821.93180895
> 
> I ran the whole thing through the cProfile module to see where python
> was spending it's time. The raw data is available at:
> https://realityforge.vrsource.org/twiki/pub/PyOpenSG/TempArea/gen_bindings.prof.bz2
> 
> A report summarizing the results (sorted by time spent exclusively 
> within the method) is available here: 
> https://realityforge.vrsource.org/twiki/pub/PyOpenSG/TempArea/stats.txt
> 
> Hopefully this will provide enough information to give some insight into 
> what is going on.  Please let me know if there is any more information I 
> can provide.
> 
> Thanks,
> Allen
> 
> 
> 
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