How to get profile data?

Hi ,
 
    I am a student coming from China and I am interesting in GC Algorithm. Now I write a new algorithm based sablevm1.0.9(include three parts: class-library-1.0.9, native-library-1.0.9, sablevm-1.0.9) in RedHat 7.3, with gcc 2.96. but I can't get profile data.
    First, I installed class-library, native-library, when configuring sablevm-1.0.9, I added option CFLAGS=-pg. After make and make intall, I used specjvm98 _201_compress to test, got gmon.out.
    Then, I used gprof to analyse gmon.out, I got the following result, no subfunctions's profile data.
 
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       14     0.00     0.00  data_start
  0.00      0.00     0.00        2     0.00     0.00  getProperties
  0.00      0.00     0.00        1     0.00     0.00  parseConfig
  0.00      0.00     0.00        1     0.00     0.00  printVersionAndCopyright
^L
                        Call graph

granularity: each sample hit covers 4 byte(s) no time propagated
index % time    self  children    called     name
                0.00    0.00      14/14          main [18]
[1]      0.0    0.00    0.00      14         data_start [1]
-----------------------------------------------
                0.00    0.00       2/2           parseConfig [3]
[2]      0.0    0.00    0.00       2         getProperties [2]
-----------------------------------------------
                0.00    0.00       1/1           main [18]
[3]      0.0    0.00    0.00       1         parseConfig [3]
                0.00    0.00       2/2           getProperties [2]
-----------------------------------------------
                0.00    0.00       1/1           main [18]
[4]      0.0    0.00    0.00       1         printVersionAndCopyright [4]
-----------------------------------------------
^L
Index by function name
   [1] data_start              [3] parseConfig (gmon-start.c)
   [2] getProperties (gmon-start.c) [4] printVersionAndCopyright (gmon-start.c)
~
 
     I know the result is wrong, but I can't find where I had made the mistake. Can you help me ? Thanks!
 
    
 
                                                                     Yang Fei
 









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