1#!/bin/sh 2 3# 4# Copyright (c) 2013 EMC Corp. 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# Swap test. Variation of testcases/swap. 30# OOM seen: https://people.freebsd.org/~pho/stress/log/swap.txt 31 32. ../default.cfg 33 34dir=/tmp 35odir=`pwd` 36cd $dir 37sed '1,/^EOF/d' < $odir/$0 > $dir/swap.c 38mycc -o swap -Wall -Wextra -O2 swap.c || exit 1 39rm -f swap.c 40 41usermem=`sysctl hw.usermem | sed 's/.* //'` 42 43if [ `sysctl -n vm.swap_total` -gt 0 ]; then 44 size=$((usermem/10*11)) 45else 46 size=$((usermem/10*8)) 47fi 48 49log=/tmp/swap.log 50tail -F -n 0 /var/log/messages > $log & lpid=$! 51/tmp/swap $((size / 4096)) 52kill $lpid 53grep -m 1 "swp_pager_getswapspace" $log && s=1 || s=0 54rm $log 55 56rm -f /tmp/swap 57exit $s 58EOF 59#include <sys/types.h> 60#include <err.h> 61#include <stdio.h> 62#include <stdlib.h> 63#include <sys/resource.h> 64#include <sys/sysctl.h> 65#include <sys/time.h> 66#include <sys/wait.h> 67#include <unistd.h> 68 69#define RUNTIME (5 * 60) 70#define INCARNATIONS 32 71 72static unsigned long size, original; 73 74void 75setup(void) 76{ 77 struct rlimit rlp; 78 79 size = size / INCARNATIONS; 80 original = size; 81 if (size == 0) 82 errx(1, "Argument too small"); 83 84 if (getrlimit(RLIMIT_DATA, &rlp) < 0) 85 err(1,"getrlimit"); 86 rlp.rlim_cur -= 1024 * 1024; 87 88 if (size > (unsigned long)rlp.rlim_cur) 89 size = rlp.rlim_cur; 90 91#if 0 92 printf("setup: pid %d. Total %luMb\n", 93 getpid(), size / 1024 / 1024 * INCARNATIONS); 94#endif 95 96 if (size == 0) 97 errx(1, "Argument too small"); 98 99 return; 100} 101 102int 103test(void) 104{ 105 volatile char *c; 106 int page; 107 unsigned long i, j; 108 time_t start; 109 110 c = malloc(size); 111 while (c == NULL) { 112 size -= 1024 * 1024; 113 c = malloc(size); 114 } 115 if (size != original) 116 printf("Malloc size changed from %ld Mb to %ld Mb\n", 117 original / 1024 / 1024, size / 1024 / 1024); 118 page = getpagesize(); 119 start = time(NULL); 120 while ((time(NULL) - start) < RUNTIME) { 121 i = j = 0; 122 while (i < size) { 123 c[i] = 0; 124 i += page; 125 if (++j % 1024 == 0) { 126 if ((time(NULL) - start) >= RUNTIME) 127 break; 128 if (arc4random() % 100 < 5) 129 usleep(1000); 130 } 131 } 132 } 133 free((void *)c); 134 135 _exit(0); 136} 137 138int 139main(int argc, char **argv) 140{ 141 int i; 142 143 if (argc != 2) 144 errx(1, "Usage: %s bytes", argv[0]); 145 146 size = atol(argv[1]) * 4096; 147 setup(); 148 149 for (i = 0; i < INCARNATIONS; i++) 150 if (fork() == 0) 151 test(); 152 153 for (i = 0; i < INCARNATIONS; i++) 154 wait(NULL); 155 156 return (0); 157} 158