[vtkusers] how to quantify executing time

[WangQ]

Hi David,
A strange thing is that I did not receive your response directly, but from Cory's reply...
Anyway, thanks for the tips, and i will try it soon.
Cheers,
Chiang

> Date: Thu, 4 Feb 2016 11:03:48 -0500
> Subject: Re: [vtkusers] how to quantify executing time
> From: cory.quammen at kitware.com
> To: dave.demarle at kitware.com
> CC: wangq1979 at outlook.com; vtkusers at vtk.org
> 
> Oops... I learn something new every day.
> 
> On Thu, Feb 4, 2016 at 10:51 AM, David E DeMarle
> <dave.demarle at kitware.com> wrote:
> > Hi Chiang,
> >
> > Take a look at vtkTimerLog.h. Basically call StartLog, do something with
> > VTK, and DumpLog. That will record the times taken within vtk to do various
> > things like rendering and data processing.
> >
> > One key point to be aware of is containment, which is represented in the log
> > by indentations. If you have some function A which calls B, A's time will
> > include the time taken by B. The logs will look something like this:
> > A 5 seconds
> >   B 4 seconds
> > which means that A spent only 1 second beyond what B did.
> >
> > A call to render will include calls to update filters whenever they are out
> > of date, so Render will contain Filter.
> >
> > cheers
> >
> > David E DeMarle
> > Kitware, Inc.
> > R&D Engineer
> > 21 Corporate Drive
> > Clifton Park, NY 12065-8662
> > Phone: 518-881-4909
> >
> > On Thu, Feb 4, 2016 at 6:40 AM, WangQ <wangq1979 at outlook.com> wrote:
> >>
> >> Hello vtkusers,
> >>
> >> I wonder if there is any way to measure the executing time from very
> >> beginning till rendering finish in VTK? Seems conventional tic toc
> >> inapplicable to VTK.
> >>
> >> It would be great if can separate computation time, e.g. time for
> >> processing data, and rendering time.
> >>
> >> Cheers,
> >>
> >> Chiang
> >>
> >> _______________________________________________
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> >
> >
> > _______________________________________________
> > Powered by www.kitware.com
> >
> > Visit other Kitware open-source projects at
> > http://www.kitware.com/opensource/opensource.html
> >
> > Please keep messages on-topic and check the VTK FAQ at:
> > http://www.vtk.org/Wiki/VTK_FAQ
> >
> > Search the list archives at: http://markmail.org/search/?q=vtkusers
> >
> > Follow this link to subscribe/unsubscribe:
> > http://public.kitware.com/mailman/listinfo/vtkusers
> >
> 
> 
> 
> -- 
> Cory Quammen
> R&D Engineer
> Kitware, Inc.
 		 	   		  
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