root@ezs-mobil:/tmp/ktap# ktap -e 's={} trace syscalls:sys_enter_* { s[argname]+=1 } trace_end { histogram(s) }'
Tracing... Hit Ctrl-C to end.
^C
                          value ------------- Distribution ------------- count
                  sys_enter_read |@@@@@@@@@@                             13677
                 sys_enter_close |@@@@@                                  7034
                  sys_enter_open |@@@@@                                  6922
              sys_enter_recvfrom |@@@                                    4160
               sys_enter_newstat |@@                                     3279
                  sys_enter_poll |@                                      2642
             sys_enter_setitimer |@                                      2499
                sys_enter_writev |@                                      2484
                 sys_enter_ioctl |@                                      2301
                sys_enter_select |                                       1271
                  sys_enter_mmap |                                       1208
          sys_enter_rt_sigaction |                                       874
              sys_enter_newfstat |                                       666
                 sys_enter_alarm |                                       660
              sys_enter_mprotect |                                       559
                 sys_enter_fcntl |                                       510
                sys_enter_access |                                       372
                sys_enter_munmap |                                       287
                 sys_enter_lseek |                                       260
                             [...]