cddl/contrib/dtracetoolkit/Examples/topsyscall_example.txt

   1 The following is a demonstration of the topsyscall command,
   2
   3
   4 Here topsyscall is run with no arguments,
   5
   6    # topsyscall
   7    2005 Jun 13 22:13:21, load average: 1.24, 1.24, 1.22   syscalls: 1287
   8
   9       SYSCALL                          COUNT
  10       getgid                               4
  11       getuid                               5
  12       waitsys                              5
  13       xstat                                7
  14       munmap                               7
  15       sysconfig                            8
  16       brk                                  8
  17       setcontext                           8
  18       open                                 8
  19       getpid                               9
  20       close                                9
  21       resolvepath                         10
  22       lwp_sigmask                         22
  23       mmap                                26
  24       lwp_park                            43
  25       read                                59
  26       write                               72
  27       sigaction                          113
  28       pollsys                            294
  29       ioctl                              520
  30
  31 The screen updates every second, and continues until Ctrl-C is hit to
  32 end the program.
  33
  34 In the above output we can see that the ioctl() system call occured 520 times,
  35 pollsys() 294 times and sigaction() 113 times.
  36
  37
  38
  39 Here the command is run with a 10 second interval,
  40
  41    # topsyscall 10
  42    2005 Jun 13 22:15:35, load average: 1.21, 1.22, 1.22   syscalls: 10189
  43
  44       SYSCALL                          COUNT
  45       writev                               6
  46       close                                7
  47       lseek                                7
  48       open                                 7
  49       brk                                  8
  50       nanosleep                            9
  51       portfs                              10
  52       llseek                              14
  53       lwp_cond_wait                       21
  54       p_online                            21
  55       gtime                               27
  56       rusagesys                           71
  57       setcontext                          92
  58       lwp_sigmask                         98
  59       setitimer                          183
  60       lwp_park                           375
  61       write                              438
  62       read                               551
  63       pollsys                           3071
  64       ioctl                             5144
  65