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79 lines
2.8 KiB
Bash
Executable file
79 lines
2.8 KiB
Bash
Executable file
#!/bin/sh
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#
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# Copyright (c) 2016 EMC Corp.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# Sched fuzz test scenario.
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# "panic: sleeping thread" seen:
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# https://people.freebsd.org/~pho/stress/log/schedfuzz.txt
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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
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sysctl kern.sched_fuzz.prof_on > /dev/null 2>&1 || exit 0
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: ${pct1:=0.01}
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: ${pct2:=0.1}
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export pct1 pct2
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seton() {
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sysctl kern.sched_fuzz.sched_fuzz_scheduler="${pct1}%return(1)"
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sysctl kern.sched_fuzz.sched_fuzz_sx_slock_delay="${pct1}%schedfuzz(82)"
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sysctl kern.sched_fuzz.sched_fuzz_sx_xlock_delay="${pct1}%schedfuzz(82)"
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sysctl kern.sched_fuzz.sched_fuzz_sx_slock_sleep="${pct1}%schedfuzz(82)"
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sysctl kern.sched_fuzz.sched_fuzz_sx_xlock_sleep="${pct1}%schedfuzz(82)"
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sysctl kern.sched_fuzz.sched_fuzz_mtx_spin_lock="${pct1}%schedfuzz(44)"
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sysctl kern.sched_fuzz.sched_fuzz_mtx_spin_unlock="${pct1}%schedfuzz(44)"
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sysctl kern.sched_fuzz.sched_fuzz_malloc="${pct1}%schedfuzz(62)"
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sysctl kern.sched_fuzz.sched_fuzz_cv_wait="${pct2}%schedfuzz(100)"
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sysctl kern.sched_fuzz.sched_fuzz_cv_timed_wait="${pct2}%schedfuzz(100)"
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sysctl kern.sched_fuzz.sched_fuzz_cv_timed_wait_sig="${pct2}%schedfuzz(100)"
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sysctl kern.sched_fuzz.sched_fuzz_mtx_lock="${pct1}%schedfuzz(22)"
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sysctl kern.sched_fuzz.sched_fuzz_mtx_unlock="${pct1}%schedfuzz(22)"
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sysctl kern.sched_fuzz.sched_fuzz_sleepq="${pct1}%schedfuzz(150)"
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sysctl kern.sched_fuzz.prof_on=1
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}
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setoff() {
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sysctl kern.sched_fuzz.prof_on=0
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}
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if [ $# -eq 1 ]; then
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case "$1" in
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on) seton
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;;
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off) setoff
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;;
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*) echo "Usage: $0 [on|off]"
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exit 1
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;;
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esac
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else
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seton
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./procfs.sh
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setoff
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fi
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