cddl/contrib/dtracetoolkit/Examples/rb_syscalls_example.txt

   1 The following are examples of sh_syscalls.d.
   2
   3 This is a simple script to count Ruby methods and system calls.  Here we trace
   4 an example program - Code/Ruby/func_abc.rb
   5
   6 # rb_syscalls.d -c ./func_abc.rb
   7 Tracing... Hit Ctrl-C to end.
   8 Function A
   9 Function B
  10 Function C
  11
  12 Calls for PID 146493,
  13
  14  FILE                             TYPE       NAME                      COUNT
  15  func_abc.rb                      method     Object::func_a                1
  16  func_abc.rb                      method     Object::func_b                1
  17  func_abc.rb                      method     Object::func_c                1
  18  func_abc.rb                      syscall    getpid                        1
  19  func_abc.rb                      syscall    getrlimit                     1
  20  func_abc.rb                      syscall    getrlimit64                   1
  21  func_abc.rb                      syscall    mmap                          1
  22  func_abc.rb                      syscall    munmap                        1
  23  func_abc.rb                      syscall    rexit                         1
  24  func_abc.rb                      syscall    schedctl                      1
  25  func_abc.rb                      syscall    sigpending                    1
  26  func_abc.rb                      syscall    sysconfig                     1
  27  func_abc.rb                      syscall    sysi86                        1
  28  func_abc.rb                      syscall    write                         1
  29  func_abc.rb                      syscall    llseek                        2
  30  func_abc.rb                      syscall    read                          2
  31  func_abc.rb                      syscall    setcontext                    2
  32  func_abc.rb                      method     IO::write                     3
  33  func_abc.rb                      method     Module::method_added          3
  34  func_abc.rb                      method     Object::print                 3
  35  func_abc.rb                      method     Object::sleep                 3
  36  func_abc.rb                      syscall    fstat64                       3
  37  func_abc.rb                      syscall    getgid                        3
  38  func_abc.rb                      syscall    getuid                        3
  39  func_abc.rb                      syscall    ioctl                         3
  40  func_abc.rb                      syscall    pollsys                       3
  41  func_abc.rb                      syscall    close                         4
  42  func_abc.rb                      syscall    lwp_sigmask                   4
  43  func_abc.rb                      syscall    open64                        4
  44  func_abc.rb                      syscall    gtime                         6
  45  func_abc.rb                      syscall    sigaction                    12
  46  func_abc.rb                      syscall    brk                          56
  47
  48 While tracing, three user-defined functions were called - func_a, func_b and
  49 func_c.  There were 3 instances of the IO::write method being called. There
  50 were also many system calls made, including 56 brk()'s, and 12 sigaction()'s.
  51
  52 This script can provide an insight to how a Ruby program is interacting
  53 with the system, by providing methods and system calls in the same output.
  54