1#!/bin/sh 2 3# 4# Copyright (c) 2018 Dell EMC Isilon 5# All rights reserved. 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions 9# are met: 10# 1. Redistributions of source code must retain the above copyright 11# notice, this list of conditions and the following disclaimer. 12# 2. Redistributions in binary form must reproduce the above copyright 13# notice, this list of conditions and the following disclaimer in the 14# documentation and/or other materials provided with the distribution. 15# 16# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26# SUCH DAMAGE. 27# 28 29# Test OOM killing. 30 31# sort stuck in "pfault" seen. 32# https://people.freebsd.org/~pho/stress/log/oom2.txt 33 34[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 35[ `sysctl -n vm.swap_total` -gt 0 ] && { swapoff -a; off=1; } 36 37[ `sysctl -n hw.physmem` -gt $((32 * 1024 * 1024 * 1024)) ] && 38 echo "RAM should be capped to no more than 32GB" 39n=`sysctl -n hw.ncpu` 40n=`jot $n` 41start=`date +%s` 42while [ $((`date +%s` - $start)) -lt 300 ]; do 43 for i in $n; do 44 sort < /dev/zero > /dev/null 2>&1 & 45 done 46 wait 47done 48[ $off ] && swapon -a 49exit 0 50