GProf's sampling inaccuracies

[Segher Boessenkool]

[Why did you reply to the list only, not to me?  I could
have very likely missed this mail.  Next time, when replying
to a mailing list, use "reply to all".]

>> Use -pg only in the final link, so you don't get mcount()
>> implanted into every function.  You won't have a call count
>> or a call graph, but you do get a much more accurate time
>> profile in return.
>
> 	Unfortunately, everytime I tired running gprof on the debug version 
> of the
> program which only does profiling at link-time, I got "gprof: gmon.out 
> file
> is missing call-graph data".

info gprof
(short story:  gprof -p  or  gprof -Q )

> 	For some strange reason the optimized version (that is, built from the
> "optimized" profile in KDevelop) didn't give me this trouble. However, 
> the
> execution time for CompareReferences() went up 70%. God help me if 
> that's
> more accurate!

No idea.  Could be KDevelop's fault, could be anything
else.


Segher