svn commit: r253599 - user/pho/stress2/misc

[Peter Holm]

Author: pho
Date: Wed Jul 24 08:39:09 2013
New Revision: 253599
URL: http://svnweb.freebsd.org/changeset/base/253599

Log:
  Added a test for VM testing.
  
  Sponsored by:	EMC / Isilon storage division

Added:
  user/pho/stress2/misc/swap2.sh   (contents, props changed)

Added: user/pho/stress2/misc/swap2.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ user/pho/stress2/misc/swap2.sh	Wed Jul 24 08:39:09 2013	(r253599)
@@ -0,0 +1,179 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2013 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.
+#
+# $FreeBSD$
+#
+
+# Swap test. Variation of swap.sh
+# panic: vm_radix_remove: impossible to locate the key
+# panic: vm_page_alloc: cache page 0xff... is missing from the free queue
+# panic: vm_radix_node_put: rnode 0xfffffe00099035a0 has a child
+# panic: vm_radix_remove: impossible to locate the key
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+. ../default.cfg
+
+mount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint
+mdconfig -l | grep -q md$mdstart &&  mdconfig -d -u $mdstart
+mdconfig -a -t swap -s 2g -u $mdstart
+bsdlabel -w md$mdstart auto
+newfs -U md${mdstart}$part > /dev/null
+mount /dev/md${mdstart}$part $mntpoint
+chmod 777 $mntpoint
+
+export runRUNTIME=30m
+export RUNDIR=$mntpoint/stressX
+rm -rf /tmp/stressX.control
+dir=/tmp
+odir=`pwd`
+cd $dir
+sed '1,/^EOF/d' < $odir/$0 > $dir/swap2.c
+cc -o swap2 -Wall -Wextra -O2 swap2.c || exit 1
+rm -f swap2.c
+cd $odir
+
+usermem=`sysctl hw.usermem | sed 's/.* //'`
+swap=`sysctl vm.swap_total | sed 's/.* //'`
+
+if [ $swap -gt 0 ]; then
+	size=$((usermem/10*11))
+else
+	size=$((usermem/10*9))
+fi
+
+/tmp/swap2 $((size / 4096)) &
+sleep 30
+su $testuser -c "(cd ../testcases/rw;   ./rw   -t 3m -i 40 -l 100 -v -h -h)" &
+wait; wait
+
+while mount | grep $mntpoint | grep -q /dev/md; do
+	umount $mntpoint || sleep 1
+done
+mdconfig -d -u $mdstart
+rm -f /tmp/swap2
+exit
+EOF
+#include <sys/types.h>
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/resource.h>
+#include <sys/sysctl.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#define RUNTIME (5 * 60)
+#define INCARNATIONS 32
+
+static unsigned long size, original;
+
+void
+setup(void)
+{
+	struct rlimit rlp;
+
+	size = size / INCARNATIONS;
+	original = size;
+	if (size == 0)
+		errx(1, "Argument too small");
+
+	if (getrlimit(RLIMIT_DATA, &rlp) < 0)
+		err(1,"getrlimit");
+	rlp.rlim_cur -= 1024 * 1024;
+
+	if (size > (unsigned long)rlp.rlim_cur)
+		size = rlp.rlim_cur;
+
+#if 0
+	printf("setup: pid %d. Total %luMb\n",
+		getpid(), size / 1024 / 1024 * INCARNATIONS);
+#endif
+	
+	if (size == 0)
+		errx(1, "Argument too small");
+
+	return;
+}
+
+int
+test(void)
+{
+	char *c;
+	int page;
+	unsigned long i, j;
+	time_t start;
+
+	c = malloc(size);
+	while (c == NULL) {
+		size -=  1024 * 1024;
+		c = malloc(size);
+	}
+	if (size != original)
+		printf("Malloc size changed from %ld Mb to %ld Mb\n",
+		    original / 1024 / 1024, size / 1024 / 1024);
+	page = getpagesize();
+	start = time(NULL);
+	while ((time(NULL) - start) < RUNTIME) {
+		i = j = 0;
+		while (i < size) {
+			c[i] = 0;
+			i += page;
+			if (++j % 1024 == 0) {
+				if ((time(NULL) - start) >= RUNTIME)
+					break;
+				if (arc4random() % 100 < 5)
+					usleep(1000);
+			}
+		}
+	}
+	free(c);
+
+	_exit(0);
+}
+
+int
+main(int argc, char **argv)
+{
+	int i;
+
+	if (argc != 2)
+		errx(1, "Usage: %s bytes", argv[0]);
+
+	size = atol(argv[1]) * 4096;
+	setup();
+
+	for (i = 0; i < INCARNATIONS; i++)
+		if (fork() == 0)
+			test();
+
+	for (i = 0; i < INCARNATIONS; i++)
+		wait(NULL);
+
+	return (0);
+}