49 lines
2.0 KiB
Bash
Executable File
49 lines
2.0 KiB
Bash
Executable File
#!/bin/sh
|
|
|
|
#
|
|
# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
#
|
|
# Copyright (c) 2020 Peter Holm
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions
|
|
# are met:
|
|
# 1. Redistributions of source code must retain the above copyright
|
|
# notice, this list of conditions and the following disclaimer.
|
|
# 2. Redistributions in binary form must reproduce the above copyright
|
|
# notice, this list of conditions and the following disclaimer in the
|
|
# documentation and/or other materials provided with the distribution.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
# SUCH DAMAGE.
|
|
#
|
|
|
|
# A variation of systrace.sh
|
|
# "Fatal trap 12: page fault while in kernel mode" seen:
|
|
# https://people.freebsd.org/~pho/stress/log/mark142.txt
|
|
|
|
[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
|
|
. ../default.cfg
|
|
dtrace -n 'dtrace:::BEGIN { exit(0); }' > /dev/null 2>&1 || exit 0
|
|
|
|
echo "gvim or top should be running at this point"
|
|
for i in `jot 2`; do
|
|
sleep 4 & pid=$!
|
|
dtrace -w -n 'fbt::kern_ioctl:entry {\
|
|
@io[execname,probefunc] = count(); }' -p $pid > /dev/null 2>&1
|
|
wait $pid
|
|
kldstat | grep -q dtraceall.ko && kldunload dtraceall.ko
|
|
mount -t tmpfs dummy $mntpoint && umount $mntpoint
|
|
done
|
|
kldstat | grep -q tmpfs && kldunload tmpfs.ko
|
|
exit 0
|