4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
31 * This file is part of Lustre, http://www.lustre.org/
32 * Lustre is a trademark of Sun Microsystems, Inc.
35 #include <sys/types.h>
40 #define CHUNK (128 * 1024)
42 void usage(const char *prog, FILE *out)
44 fprintf(out, "usage: %s allocsize\n", prog);
45 fprintf(out, " allocsize is kbytes, or number[KMGP] (P = pages)\n");
49 int main(int argc, char *argv[])
51 long long kbtotal = 0, kballoc;
52 int i, j, k, numchunk, alloc, sum, rc = 0;
57 kbtotal = strtoull(argv[1], &end, 0);
75 usage(argv[0], stderr);
80 if (argc != 2 || kbtotal == 0)
81 usage(argv[0], stderr);
83 numchunk = (kbtotal + CHUNK - 1) / CHUNK;
84 mem = calloc(numchunk, sizeof(*mem));
86 fprintf(stderr, "error allocating initial chunk array\n");
91 printf("[%d] allocating %lld kbytes in %u kbyte chunks\n",
92 getpid(), kbtotal, alloc);
93 for (i = kballoc = 0; i < numchunk && alloc > 0; i++, kballoc += alloc){
94 if (kbtotal - kballoc < alloc)
95 alloc = kbtotal - kballoc;
97 while (alloc > 0 && (mem[i] = malloc(alloc * 1024)) == NULL) {
98 fprintf(stderr, "malloc(%u) failed (%lld/%lld)\n",
99 alloc * 1024, kballoc, kbtotal);
105 printf("touching %p ([%lld-%lld]/%lld)\n", mem[i], kballoc,
106 kballoc + alloc - 1, kbtotal);
107 for (j = 0, tmp = mem[i]; j < alloc; j += 4) {
108 for (k = 0, sum = 0; k < 4095; k++, tmp++)
117 printf("touched %lld kbytes\n", kballoc);
120 printf("verifying %lld kbytes in %u kbyte chunks\n", kbtotal, alloc);
121 for (i = kballoc = 0; i < numchunk; i++, kballoc += alloc) {
122 if (kbtotal - kballoc < alloc)
123 alloc = kbtotal - kballoc;
127 printf("verifying %p (%lld/%lld)\n",
128 tmp, kballoc, kbtotal);
129 for (j = 0; j < alloc; j += 4) {
130 for (k = 0, sum = 0; k < 4095; k++, tmp++)
133 fprintf(stderr, "sum %x != %x at %p\n",
134 *tmp, sum, tmp - 4092);
140 printf("verified %lld kbytes\n", kballoc);