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 :  /proc/self/root/opt/rh/gcc-toolset-11/root/usr/share/systemtap/examples/profiling/

Upload File : current_dir [ Writeable ] document_root [ Writeable ]

#!/opt/rh/gcc-toolset-11/root/usr/bin/stap

probe perf.sw.cpu_clock!, timer.profile {
  // NB: To avoid contention on SMP machines, no global scalars/arrays used,
  // only contention-free statistics aggregates.
  tid=tid(); e=execname()
  if (!user_mode())
    kticks[e,tid] <<< 1
  else
    uticks[e,tid] <<< 1
  ticks <<< 1
  tids[e,tid] <<< 1
}

global uticks%, kticks%, ticks

global tids%

probe timer.s(5), end {
  allticks = @count(ticks)
  printf ("%16s %5s %7s %7s (of %d ticks)\n",
          "comm", "tid", "%user", "%kernel", allticks)
  foreach ([e,tid] in tids- limit 20) {
    // SystemTap only performs integer arithmetic.
    // To avoid losing precision the decimal point is shifted
    // to the right four places (*100000). Think of this as
    // the original result value x.xxyy becoming xxxyy.0.
    // The integer percentage xxx is obtained
    // by dividing by 100 and the fractional percentage
    // is obtained with a modulo 100 operation.
    uscaled = @count(uticks[e,tid])*10000/allticks
    kscaled = @count(kticks[e,tid])*10000/allticks
    printf ("%16s %5d %3d.%02d%% %3d.%02d%%\n",
      e, tid, uscaled/100, uscaled%100, kscaled/100, kscaled%100)
  }
  printf("\n")

  delete uticks
  delete kticks
  delete ticks
  delete tids
}