Re: [Boost-users] Profiling Boost with gprof

From: Jeff Garland (jeff_at_[hidden])
Date: 2005-11-04 23:42:51

On Fri, 4 Nov 2005 13:09:20 -0800 (PST), Dave wrote
> Hello All,
> 
> I'm trying to profile Boost Graph examples using
> gprof, but can't get any reasonable results. My system
> is Mac OS X 10.3.9 and gcc version 3.3. I compile
> programs with -pg option, but the profile does not
> seem to contain any useful information. It only shows
> "no time accumulated", or 100% for main. What am I
> doing wrong?

Does the program run for 1 second then quit?  There's really not enough
information here to help you. I suggest you use a simple program with a loop
to see if you have the compilation settings right.  Something like:

int
main()
{
  for (int i; i < 1000000; i++;) {
    std::cout << i;
  }

}

You might need to adjust the count so that it runs for awhile.  Then you can
move up to boost stuff...

HTH,

Jeff