svn commit: r261289 - user/pho/stress2/misc
Peter Holm
pho at FreeBSD.org
Thu Jan 30 11:35:20 UTC 2014
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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