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Filename : syscalls_by_pid.stp

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#!/usr/bin/stap

# Copyright (C) 2006 IBM Corp.
#
# This file is part of systemtap, and is free software.  You can
# redistribute it and/or modify it under the terms of the GNU General
# Public License (GPL); either version 2, or (at your option) any
# later version.

#
# Print the system call count by process ID in descending order.
#

global syscalls

probe begin {
  print ("Collecting data... Type Ctrl-C to exit and display results\n")
}

probe syscall_any {
  syscalls[pid()]++
}

probe end {
  printf ("%-10s %-s\n", "#SysCalls", "PID")
  foreach (pid in syscalls-)
    printf("%-10d %-d\n", syscalls[pid], pid)
}