text: title: Track Time Processes Spend in Various States Using Tracepoints
  name: schedtimes.stp
  version: 1.0
  author: Jason Baron
  keywords: process scheduler time tracepoint
  subsystem: scheduler
  status: production
  exit: user-controlled
  output: sorted-list
  scope: system-wide
  description: The schedtimes.stp script instruments the scheduler to track the amount of time that each process spends in running, sleeping, queuing, and waiting for io. On exit the script prints out the accumulated time for each state of processes observed.  Optionally, this script can be used with the '-c' or '-x' options to focus on a specific PID and its children.
  test_support: stap -l 'kernel.trace("sched_switch")' && stap -l 'kernel.trace("sched_wakeup")'
  test_check: stap -p4 schedtimes.stp
  test_installcheck: stap schedtimes.stp -c "sleep 1"
  