Date: Tue, 18 Feb 2020 10:28:09 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r358063 - user/pho/stress2/misc Message-ID: <202002181028.01IAS97n080432@repo.freebsd.org>
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Author: pho Date: Tue Feb 18 10:28:09 2020 New Revision: 358063 URL: https://svnweb.freebsd.org/changeset/base/358063 Log: Added a regression test. Added: user/pho/stress2/misc/swapoff3.sh (contents, props changed) Added: user/pho/stress2/misc/swapoff3.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/swapoff3.sh Tue Feb 18 10:28:09 2020 (r358063) @@ -0,0 +1,146 @@ +#!/bin/sh + +# +# SPDX-License-Identifier: BSD-2-Clause-FreeBSD +# +# Copyright (c) 2020 Mark Johnston +# +# 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. +# +# $FreeBSD$ +# + +# "panic: Swapdev not found" seen: +# https://people.freebsd.org/~pho/stress/log/swapoff3.txt +# Fixed by r358024-6 + +. ../default.cfg +[ `id -u` -ne 0 ] && echo "Must be root!" && exit 1 +dir=`dirname $diskimage` +[ `df -k $dir | tail -1 | awk '{print $4}'` -lt \ + $((20 * 1024 * 1024)) ] && + { echo "Need 20GB on $dir"; exit 0; } + +cat > /tmp/swapoff3.c <<EOF +#include <sys/param.h> +#include <sys/mman.h> +#include <sys/sysctl.h> + +#include <assert.h> +#include <err.h> +#include <stdlib.h> +#include <unistd.h> + +int +main(void) +{ + char *addr, *naddr, *res; + size_t i, len, swap, vsz; + u_int free; + + vsz = sizeof(free); + if (sysctlbyname("vm.stats.vm.v_free_count", &free, &vsz, NULL, 0) != 0) + err(1, "sysctl(vm.stats.vm.v_free_count)"); + vsz = sizeof(swap); + if (sysctlbyname("vm.swap_total", &swap, &vsz, NULL, 0) != 0) + err(1, "sysctl(vm.swap_total)"); + + len = (size_t)free * PAGE_SIZE + swap / 4; + addr = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, + -1, 0); + if (addr == MAP_FAILED) + err(1, "mmap"); + + res = malloc(howmany(len, PAGE_SIZE)); + if (res == NULL) + err(1, "malloc"); + + for (i = 0; i < len; i += PAGE_SIZE) + addr[i] = 1; + + for (;;) { + if (mincore(addr, len, res) != 0) + err(1, "mincore"); + for (i = 0; i < howmany(len, PAGE_SIZE); i++) + if ((res[i] & MINCORE_INCORE) == 0) { + naddr = addr + i * PAGE_SIZE; + if (munmap(naddr, PAGE_SIZE) != 0) + err(1, "munmap"); + if (mmap(naddr, PAGE_SIZE, + PROT_READ | PROT_WRITE, + MAP_ANON | MAP_PRIVATE | MAP_FIXED, + -1, 0) == MAP_FAILED) + err(1, "mmap"); + assert(*naddr == 0); + *naddr = 1; + } + } + + return (0); +} +EOF +mycc -o /tmp/swapoff3 -Wall -Wextra -O2 -g /tmp/swapoff3.c || exit + +set -e +md1=$mdstart +md2=$((md1 + 1)) +[ `sysctl -n vm.swap_total` -gt 0 ] && { swapoff -a > /dev/null; off=1; } +truncate -s 10G $dir/swap1 +mdconfig -a -t vnode -f $dir/swap1 -u $md1 +swapon /dev/md$md1 +truncate -s 10G $dir/swap2 +mdconfig -a -t vnode -f $dir/swap2 -u $md2 +swapon /dev/md$md2 +set +e + +timeout 4m /tmp/swapoff3 & +for i in `jot 60`; do + n=`swapinfo | tail -1 | awk '{print $3}'` + [ $n -gt 0 ] && break + sleep 1 +done +echo "Total in use: $n" + +n=0 +start=`date +%s` +while [ $((`date +%s` - start)) -lt 120 ]; do + for dev in /dev/md$md1 /dev/md$md2; do + for i in `jot 3`; do + swapoff $dev && break + done + swapon $dev + n=$((n + 1)) + done + sleep .1 +done +kill $! +echo "$n swapoffs" +[ $n -lt 1000 ] && { echo "Only performed $n swapoffs"; s=1; } || s=0 +wait +for dev in /dev/md$md1 /dev/md$md2; do + swapoff $dev +done +mdconfig -d -u $md1 +mdconfig -d -u $md2 +rm -f $dir/swap1 $dir/swap2 /tmp/swapoff3 /tmp/swapoff3.c +[ $off ] && swapon -a > /dev/null +exit $shelp
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