xref: /freebsd/tools/test/stress2/misc/schedfuzz.sh (revision 8ddb146abcdf061be9f2c0db7e391697dafad85c)
1#!/bin/sh
2
3#
4# Copyright (c) 2016 EMC Corp.
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# Sched fuzz test scenario.
30
31# "panic: sleeping thread" seen:
32# https://people.freebsd.org/~pho/stress/log/schedfuzz.txt
33
34[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
35
36sysctl kern.sched_fuzz.prof_on > /dev/null 2>&1 || exit 0
37
38: ${pct1:=0.01}
39: ${pct2:=0.1}
40export pct1 pct2
41
42seton() {
43	sysctl kern.sched_fuzz.sched_fuzz_scheduler="${pct1}%return(1)"
44	sysctl kern.sched_fuzz.sched_fuzz_sx_slock_delay="${pct1}%schedfuzz(82)"
45	sysctl kern.sched_fuzz.sched_fuzz_sx_xlock_delay="${pct1}%schedfuzz(82)"
46	sysctl kern.sched_fuzz.sched_fuzz_sx_slock_sleep="${pct1}%schedfuzz(82)"
47	sysctl kern.sched_fuzz.sched_fuzz_sx_xlock_sleep="${pct1}%schedfuzz(82)"
48	sysctl kern.sched_fuzz.sched_fuzz_mtx_spin_lock="${pct1}%schedfuzz(44)"
49	sysctl kern.sched_fuzz.sched_fuzz_mtx_spin_unlock="${pct1}%schedfuzz(44)"
50	sysctl kern.sched_fuzz.sched_fuzz_malloc="${pct1}%schedfuzz(62)"
51	sysctl kern.sched_fuzz.sched_fuzz_cv_wait="${pct2}%schedfuzz(100)"
52	sysctl kern.sched_fuzz.sched_fuzz_cv_timed_wait="${pct2}%schedfuzz(100)"
53	sysctl kern.sched_fuzz.sched_fuzz_cv_timed_wait_sig="${pct2}%schedfuzz(100)"
54	sysctl kern.sched_fuzz.sched_fuzz_mtx_lock="${pct1}%schedfuzz(22)"
55	sysctl kern.sched_fuzz.sched_fuzz_mtx_unlock="${pct1}%schedfuzz(22)"
56	sysctl kern.sched_fuzz.sched_fuzz_sleepq="${pct1}%schedfuzz(150)"
57
58	sysctl kern.sched_fuzz.prof_on=1
59}
60
61setoff() {
62	sysctl kern.sched_fuzz.prof_on=0
63}
64
65if [ $# -eq 1 ]; then
66	case "$1" in
67	on)	seton
68		;;
69	off)	setoff
70		;;
71	*)	echo "Usage: $0 [on|off]"
72		exit 1
73		;;
74	esac
75else
76	seton
77	./procfs.sh
78	setoff
79fi
80