Re: gprof reporting zero times for one program

[Nick Clifton]

Hi David,

> I'm having issues with gprof reporting empty times on the development
> version of my network program nettee.

> binutils-2.17.50.0.9-1mdv2007.1

For the record there is a 2.18 release out now, although I doubt if this will 
have any effect on the problem you are seeing.

> Whereas for the development nettee:

> Each sample counts as 0.01 seconds.
>  no time accumulated

Hmm, well it appears that there is no profiling information in the gmon.out 
file.  Have you checked that a gmon.out file is actually being produced ?  And 
that it is not empty ?

My first guess as to the cause would be that you are now linking with startup 
files which do not enable profiling.  Try adding "-v" to the gcc command line 
of the old and new nettee builds and see if different startup files are being used.

You might also try using the gcov program as an alternative to gprof (and 
--coverage instead of -pg).

Cheers
  Nick