Server : Apache System : Linux server2.corals.io 4.18.0-348.2.1.el8_5.x86_64 #1 SMP Mon Nov 15 09:17:08 EST 2021 x86_64 User : corals ( 1002) PHP Version : 7.4.33 Disable Function : exec,passthru,shell_exec,system Directory :  /opt/rh/gcc-toolset-11/root/usr/share/systemtap/examples/general/

Upload File : current_dir [ Writeable ] document_root [ Writeable ]

#!/opt/rh/gcc-toolset-11/root/usr/bin/stap
# Copyright (C) 2012-2018 Red Hat, Inc.
# by William Cohen <[email protected]>
#
# exercise the stopwatch tapset

probe begin
{
  start_stopwatch("wall");
  /* The next two lines assumes that target is running and in user-space. */
  start_stopwatch("user");
  stop_stopwatch("system")
}

probe syscall_any
{
  if (pid() != target()) next
  stop_stopwatch("user")
  start_stopwatch("system")
}

probe syscall_any.return
{
  if (pid() != target()) next
  start_stopwatch("user")
  stop_stopwatch("system")
}

probe end
{
  stop_stopwatch("wall")
  stop_stopwatch("user")
  stop_stopwatch("system")

  w = read_stopwatch_us("wall")
  u = read_stopwatch_us("user")
  s = read_stopwatch_us("system")
  printf ("wall clock                 %12dus\n", w);
  printf ("wall clock in user-space   %12dus\n", u);
  printf ("wall clock in kernel-space %12dus\n", s);

  delete_stopwatch("wall")
  delete_stopwatch("user")
  delete_stopwatch("system")
}