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Help per gprof



Non  riesco a  capire perché  gprof  non mi  dice il  tempo delle  varie
funzioni di un programma che ho scritto:

bash-2.05a$ gprof -b primo
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        1     0.00     0.00  global constructors keyed to generateTableGCOV
  0.00      0.00     0.00        1     0.00     0.00  generateTable
  0.00      0.00     0.00        1     0.00     0.00  recursive_DIF_FFT


                        Call graph


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

index % time    self  children    called     name
                0.00    0.00       1/1           main [16]
[1]      0.0    0.00    0.00       1         generateTable [1]
-----------------------------------------------
                                1022             recursive_DIF_FFT [2]
                0.00    0.00       1/1           main [16]
[2]      0.0    0.00    0.00       1+1022    recursive_DIF_FFT [2]
                                1022             recursive_DIF_FFT [2]
-----------------------------------------------
                0.00    0.00       1/1           __do_global_ctors_aux [28]
[18]     0.0    0.00    0.00       1         global constructors keyed to generateTableGCOV [18]
-----------------------------------------------


Index by function name

  [18] global constructors keyed to generateTableGCOV [1] generateTable [2] recursive_DIF_FFT
bash-2.05a$

Ho provato ad aumentare  i dati su cui lavora il mio  algoritmo e non ho
ottenuto nulla...

Il Makefile è:

bash-2.05a$ cat Makefile 
all:
        cc primo.c -c -o primo.o -Wall -g -pg -fprofile-arcs
        cc primo.o -o primo -pg -Wall -g -lm -fprofile-arcs

clean:
        rm primo primo.o
bash-2.05a$

ho messo anche l'opzione -fprofile-arcs consigliata dalla manpage...

Come mai non va?

-- 
Non c'è più forza nella normalità, c'è solo monotonia.


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