1#!/bin/sh 2 3# 4# Copyright (c) 2012 Peter Holm <pho@FreeBSD.org> 5# All rights reserved. 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions 9# are met: 10# 1. Redistributions of source code must retain the above copyright 11# notice, this list of conditions and the following disclaimer. 12# 2. Redistributions in binary form must reproduce the above copyright 13# notice, this list of conditions and the following disclaimer in the 14# documentation and/or other materials provided with the distribution. 15# 16# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26# SUCH DAMAGE. 27# 28 29[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 30 31# Unmapped I/O test scenario: 32# http://people.freebsd.org/~pho/stress/log/kostik515.txt 33 34. ../default.cfg 35 36here=`pwd` 37cd /tmp 38sed '1,/^EOF/d' < $here/$0 > rot.c 39mycc -o rot -Wall -Wextra -O2 -g rot.c || exit 1 40rm -f rot.c 41cd $here 42 43mount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint 44mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart 45 46mdconfig -a -t swap -s 2g -u $mdstart || exit 1 47 48newfs $newfs_flags md$mdstart > /dev/null 49 50mount /dev/md$mdstart $mntpoint 51chmod 777 $mntpoint 52 53(cd $mntpoint; /tmp/rot) 54(cd `dirname $diskimage`; /tmp/rot) 55 56while mount | grep $mntpoint | grep -q /dev/md; do 57 umount $mntpoint || sleep 1 58done 59mdconfig -d -u $mdstart 60rm -f /tmp/rot 61exit 0 62EOF 63#include <err.h> 64#include <fcntl.h> 65#include <stdio.h> 66#include <stdlib.h> 67#include <sys/mman.h> 68#include <sys/wait.h> 69#include <time.h> 70#include <unistd.h> 71 72#define N 10240 /* 40 Mb */ 73#define PARALLEL 20 74#define RUNTIME (60 * 15) 75 76int 77test(void) 78{ 79 int fd, i, j, s; 80 unsigned char *buf; 81 char path[128]; 82 83 s = getpagesize(); 84 85 sprintf(path,"%s.%05d", getprogname(), getpid()); 86 if ((fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0600)) < 0) 87 err(1, "open(%s)", path); 88 if (lseek(fd, s * N - 1, SEEK_SET) == -1) 89 err(1, "lseek error"); 90 91 /* write a dummy byte at the last location */ 92 if (write(fd, "", 1) != 1) 93 err(1, "write error"); 94 95 for (i = 0; i < N; i++) { 96 if ((buf = mmap(0, s, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 97 i * s)) == MAP_FAILED) 98 err(1, "write map"); 99 for (j = 0; j < s; j++) 100 buf[j] = i % 256; 101 } 102 if (munmap(buf, s) == -1) 103 err(1, "unmap (write)"); 104 close(fd); 105 106 if ((fd = open(path, O_RDONLY)) < 0) 107 err(1, "open(%s)", path); 108 for (i = 0; i < N; i++) { 109 if ((buf = mmap(0, s, PROT_READ, MAP_SHARED, fd, i * s)) == 110 MAP_FAILED) 111 err(1, "write map"); 112 for (j = 0; j < s; j++) 113 if (buf[j] != i % 256) 114 fprintf(stderr, "read %d, expected %d at %d\n", 115 buf[j], i % 256, i); 116 } 117 if (munmap(buf, s) == -1) 118 err(1, "unmap (read)"); 119 close(fd); 120 unlink(path); 121 122 _exit(0); 123} 124 125int 126main(void) 127{ 128 time_t start; 129 int i; 130 131 start = time(NULL); 132 while (time(NULL) - start < RUNTIME) { 133 for (i = 0; i < PARALLEL; i++) 134 if (fork() == 0) 135 test(); 136 for (i = 0; i < PARALLEL; i++) 137 wait(NULL); 138 } 139 140 return(0); 141} 142