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      1 The following is a demonstration of the syscallbypid.d script,
      2 
      3 
      4 Here we run syscallbypid.d for a few seconds then hit Ctrl-C,
      5 
      6    # syscallbypid.d
      7    Tracing... Hit Ctrl-C to end.
      8    ^C
      9       PID CMD                      SYSCALL                     COUNT
     10     11039 dtrace                   setcontext                      1
     11     11039 dtrace                   lwp_sigmask                     1
     12         7 svc.startd               portfs                          1
     13       357 poold                    lwp_cond_wait                   1
     14     27328 java_vm                  lwp_cond_wait                   1
     15      1532 Xorg                     writev                          1
     16     11039 dtrace                   lwp_park                        1
     17     11039 dtrace                   schedctl                        1
     18     11039 dtrace                   mmap                            1
     19       361 sendmail                 pollsys                         1
     20     11039 dtrace                   fstat64                         1
     21     11039 dtrace                   sigaction                       2
     22     11039 dtrace                   write                           2
     23       361 sendmail                 lwp_sigmask                     2
     24      1659 mozilla-bin              yield                           2
     25     11039 dtrace                   sysconfig                       3
     26       361 sendmail                 pset                            3
     27     20317 sshd                     read                            4
     28       361 sendmail                 gtime                           4
     29     20317 sshd                     write                           4
     30     27328 java_vm                  ioctl                           6
     31     11039 dtrace                   brk                             8
     32      1532 Xorg                     setcontext                      8
     33      1532 Xorg                     lwp_sigmask                     8
     34     20317 sshd                     pollsys                         8
     35       357 poold                    pollsys                        13
     36      1659 mozilla-bin              read                           16
     37     20317 sshd                     lwp_sigmask                    16
     38      1532 Xorg                     setitimer                      17
     39     27328 java_vm                  pollsys                        18
     40      1532 Xorg                     pollsys                        19
     41     11039 dtrace                   p_online                       21
     42      1532 Xorg                     read                           22
     43      1659 mozilla-bin              write                          25
     44      1659 mozilla-bin              lwp_park                       26
     45     11039 dtrace                   ioctl                          36
     46      1659 mozilla-bin              pollsys                       155
     47      1659 mozilla-bin              ioctl                         306
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     49 In the above output, we can see that "mozilla-bin" with PID 1659 made the
     50 most system calls - 306 ioctl()s.
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