1 /*- 2 * Copyright (c) 2008 Peter Holm <pho@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 */ 27 28 #include <sys/types.h> 29 #include <sys/sysctl.h> 30 #include <unistd.h> 31 #include <stdio.h> 32 #include <stdlib.h> 33 #include <sys/time.h> 34 #include <sys/resource.h> 35 #include <err.h> 36 37 38 #include "stress.h" 39 40 static unsigned long size; 41 42 int 43 setup(int nb) 44 { 45 int pct; 46 unsigned long mem; 47 int64_t swapinfo = 0; 48 struct rlimit rlp; 49 50 if (nb == 0) { 51 mem = usermem(); 52 swapinfo = swap(); 53 if (swapinfo > mem) 54 swapinfo = mem; 55 56 if (op->hog == 0) 57 pct = random_int(1, 10); 58 59 if (op->hog == 1) 60 pct = random_int(10, 20); 61 62 if (op->hog == 2) 63 pct = random_int(80, 90); 64 65 if (op->hog >= 3) 66 pct = random_int(100, 110); 67 68 if (swapinfo == 0) 69 size = mem / 100 * pct; 70 else 71 size = swapinfo / 100 * pct + mem; 72 73 size = size / op->incarnations; 74 75 if (getrlimit(RLIMIT_DATA, &rlp) < 0) 76 err(1,"getrlimit"); 77 rlp.rlim_cur -= 1024 * 1024; 78 79 if (size > rlp.rlim_cur) 80 size = rlp.rlim_cur; 81 putval(size); 82 83 84 if (op->verbose > 1 && nb == 0) 85 printf("setup: pid %d, %d%%. Total %luMb\n", 86 getpid(), pct, size / 1024 / 1024 * op->incarnations); 87 } else 88 size = getval(); 89 return (0); 90 } 91 92 void 93 cleanup(void) 94 { 95 } 96 97 int 98 test(void) 99 { 100 char *c; 101 int i, page; 102 unsigned long oldsize = size; 103 time_t start; 104 105 c = malloc(size); 106 while (c == NULL && done_testing == 0) { 107 size -= 1024 * 1024; 108 c = malloc(size); 109 } 110 if (op->verbose > 1 && size != oldsize) 111 printf("Malloc size changed from %ld Mb to %ld Mb\n", 112 oldsize / 1024 / 1024, size / 1024 / 1024); 113 page = getpagesize(); 114 start = time(NULL); /* Livelock workaround */ 115 while (done_testing == 0 && 116 (time(NULL) - start) < op->run_time) { 117 i = 0; 118 while (i < size && done_testing == 0) { 119 c[i] = 0; 120 i += page; 121 } 122 #if 0 123 if (op->hog != 1) 124 usleep(1000); 125 #endif 126 } 127 free(c); 128 129 return (0); 130 } 131