Date: Thu, 30 Jan 2014 11:35:19 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r261289 - user/pho/stress2/misc Message-ID: <201401301135.s0UBZJM9011935@svn.freebsd.org>
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Author: pho Date: Thu Jan 30 11:35:19 2014 New Revision: 261289 URL: http://svnweb.freebsd.org/changeset/base/261289 Log: Added a test scenario for swapoff(8). Sponsored by: EMC / Isilon storage division Added: user/pho/stress2/misc/stealer.sh (contents, props changed) Added: user/pho/stress2/misc/stealer.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/stealer.sh Thu Jan 30 11:35:19 2014 (r261289) @@ -0,0 +1,130 @@ +#!/bin/sh + +# +# Copyright (c) 2014 EMC Corp. +# All rights reserved. +# +# 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. +# +# $FreeBSD$ +# + +# Process stuck in objtrm wait state +# http://people.freebsd.org/~pho/stress/log/stealer.txt + +[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 + +. ../default.cfg + +here=`pwd` +cd /tmp +sed '1,/^EOF/d' < $here/$0 > stealer.c +cc -o stealer -Wall -Wextra stealer.c || exit 1 +rm -f stealer.c +cd $here +swapoff -a > /dev/null + +dd if=/dev/zero of=$diskimage bs=1m count=1k 2>&1 | + egrep -v 'records|transferred' +mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart +mdconfig -a -t vnode -f $diskimage -u $mdstart +swapon /dev/md$mdstart + +hw=`sysctl hw.pagesize | sed 's/.*: //'` +pages=`sysctl hw.usermem | sed 's/.*: //'` +pages=$((pages / hw)) +echo "`date '+%T'` Test with $pages pages." +su $testuser -c "sh -c \"/tmp/stealer $pages\"" & +sleep 30 +while ! swapoff /dev/md$mdstart 2>&1 | + grep -v "Cannot allocate memory"; do + sleep 2 +done +wait + +swapon -a > /dev/null + +mdconfig -d -u $mdstart +rm -rf /tmp/stealer $diskimage +exit 0 +EOF +#include <err.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <sys/wait.h> + +#define N 200 + +void +handler(int i __unused) +{ + _exit(0); +} + +void +stealer(int pages) +{ + char *c; + int i, page, size; + + page = getpagesize(); + size = pages * page; + if ((c = malloc(size)) == 0) + err(1, "malloc(%d pages)", pages); + + signal(SIGALRM, handler); + alarm(3 * 60); + for (;;) { + i = 0; + while (i < size) { + c[i] = 0; + i += page; + } + } +} + +int +main(int argc __unused, char **argv) +{ + int i, j, n, pages, status; + + pages = atoi(argv[1]); + n = pages / N; + + j = 0; + for ( i = 0; i < N; i++, j++) { + if (fork() == 0) + stealer(n); + pages = pages - n; + } + if (pages > 0) { + j++; + if (fork() == 0) + stealer(pages); + } + while (j-- > 0) + if (wait(&status) == -1) + err(1, "wait()"); + return (0); +}
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