Re: [LIP] gprof problem

[<arv...@ya...>]

hi nabendu,
	i am not sure why, but, it worked for me. Attached:
prog.c and profile info.

Compile this with:

cc -p prog.c -o prog

execute this as : ./prog

Profile it with : gprof prog > profinfo.

( you can use gprof -b prog > profinfo to get brief
info)

you'll get the profile info (attached at the end)


My test program:

prog.c

#include <stdio.h>

int main(void)
{
	int i;
	void func1();
	void func2();

	for (i=0; i<3; i++)
		func1();
	func2();
	return 0;
}

void func1()
{
	int i;

	printf("func1()\n");
	/* Spend some time */
	for (i=0; i<10000; i++);
	return;
}

void func2()
{
	int i;

	printf("func2()\n");
	/* Spend some time */
	for (i=0; i<50000; i++);
	return;
}

Profiled result:

Flat profile:

Each sample counts as 0.01 seconds.
 no time accumulated

  %   cumulative   self              self     total   
       
 time   seconds   seconds    calls  Ts/call  Ts/call 
name    
  0.00      0.00     0.00        3     0.00     0.00 
func1
  0.00      0.00     0.00        1     0.00     0.00 
func2

			Call graph


granularity: each sample hit covers 4 byte(s) no time
propagated

index % time    self  children    called     name
                0.00    0.00       3/3           main
[10]
[1]      0.0    0.00    0.00       3         func1 [1]
-----------------------------------------------
                0.00    0.00       1/1           main
[10]
[2]      0.0    0.00    0.00       1         func2 [2]
-----------------------------------------------

Index by function name

   [1] func1                   [2] func2


regards,
arvind.


 --- nabendu das <das...@ya...> wrote: > i
have tried as u have suggested
> but it is now giving message as 
> 
> gprof : gmon.out file is missing call-graph data
> 
> suggest
> 
> --- Arvind D Sankruthi <arv...@ya...> wrote:
> > hi nabendu,
> > 	i guess i got your problem. you should not use
> > gmon.out for profiling directly. here's an example
> > of
> > how you can use it:
> > 
> > * You want the profiling info for a program "prog"
> > * You compile prog.c with -pg option, get
> executable
> > "prog"
> > * Execute "prog" and you get gmon.out.
> > * Use gprof as:
> >     
> >    gprof prog > profinfo   (NOT gprof gmon.out ! )
> > 
> > * you'll get profiling info in profinfo
> > 
> > By the way, just typing "gprof > profinfo" will
> get
> > profiling info from a.out (after you run a.out).
> > 
> > hope this helps.
> > 
> > regards,
> > arvind.
> > 
> >  --- nabendu das <das...@ya...> wrote: >
> > after
> > compiling a program with -gp i m getting the
> > > file 
> > > gmon.out. but when i m trying to see the profile
> > > info
> > > using  gprof a.out gmon.out> out it is giving
> > > message
> > > as
> > > 
> > > gmon.out : not in a.out format.
> > > then how to view the profile info 
> > > plz suggest me .
> > > 
> > > reagards
> > > nab
> > > 
> > >
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> > =====
> > << Arvind D Sankruthi >>
> > << Bangalore, India   >>
> > << ICQ - 119614569    >>
> > 
> >
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=====
<< Arvind D Sankruthi >>
<< Bangalore, India   >>
<< ICQ - 119614569    >>

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