title: Tally Reschedule Reason During AIO io_submit Call
name: io_submit.stp
version: 1.0
author: Oracle
keywords: io backtrace
subsystem: io
status: production
exit: user-controlled
output: sorted on-exit
scope: system-wide
description: When a reschedule occurs during an AIO io_submit call, accumulate the traceback in a histogram. When the script exits prints out a sorted list from most common to least common backtrace.
test_check: stap -p4 io_submit.stp
test_installcheck: stap io_submit.stp -c "sleep 0.2"