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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
27 * This file is part of Lustre, http://www.lustre.org/
28 * Lustre is a trademark of Sun Microsystems, Inc.
34 #include <sys/types.h>
45 #define difftime(a, b) \
46 ((double)(a)->tv_sec - (b)->tv_sec + \
47 ((double)((a)->tv_usec - (b)->tv_usec) / 1000000))
55 void usage(char *name)
57 fprintf(stderr, "usage: %s [opts] <dirname> <seconds> <threads>\n",
59 fprintf(stderr, " -q quiet\n");
60 fprintf(stderr, " -a abort other children on first err\n");
67 struct kid_list_t *next;
70 struct kid_list_t *head = NULL;
72 int push_kid(pid_t kid)
74 struct kid_list_t *new;
75 new = (struct kid_list_t *)malloc(sizeof(struct kid_list_t));
88 kill(head->kid, SIGTERM);
93 static int usr1_received;
94 void usr1_handler(int unused)
100 int wait_for_threads(int live_threads)
104 while (live_threads > 0) {
108 ret = waitpid(0, &status, 0);
114 fprintf(stderr, "%s: error: wait - %s\n",
115 cmdname, strerror(errno));
120 * This is a hack. We _should_ be able to use
121 * WIFEXITED(status) to see if there was an
122 * error, but it appears to be broken and it
123 * always returns 1 (OK). See wait(2).
125 int err = WEXITSTATUS(status);
128 "%s: error: PID %d had rc=%d\n",
130 /* Record first error */
134 /* Give up on first error */
144 printf("%s done, rc = %d\n", cmdname, rc);
148 void print_err(char *op, char *filename, struct timeval *time, int err)
150 fprintf(stderr, "%s: %d.%.06d error: %s(%s): %s\n",
151 cmdname, (int)(time->tv_sec), (int)(time->tv_usec), op,
152 filename, strerror(errno));
155 int run_one_child(char *file, int thread, int seconds)
157 struct timeval start, cur;
161 int fd, rc = 0, rand, maxrand, len;
162 long nfiles = 0, nbytes = 0;
165 printf("%s: running thread #%d\n", cmdname, thread);
168 /* Higher thread numbers will produce bigger random files.
169 Thread 1 will produce only 0-len files. */
170 maxrand = 1; rand = thread;
174 gettimeofday(&start, NULL);
181 gettimeofday(&cur, NULL);
183 if (cur.tv_sec > (start.tv_sec + seconds))
187 snprintf(filename, sizeof(filename), "%s-%d-%ld",
188 file, thread, nfiles);
190 fd = open(filename, O_RDWR | O_CREAT, 0666);
192 print_err("open", filename, &cur, errno);
197 sprintf(buf, "%s %010ld %.19s.%012d\n", cmdname,
198 nfiles++, ctime(&cur.tv_sec), (int)cur.tv_usec);
201 rand = random() % maxrand;
203 if (write(fd, buf, len) != len) {
204 print_err("write", filename, &cur, errno);
212 print_err("close", filename, &cur, errno);
216 if (unlink(filename) < 0) {
217 print_err("unlink", filename, &cur, errno);
218 if (errno == ENOENT) {
219 printf("Ignoring known bug 6082\n");
227 diff = difftime(&cur, &start);
229 printf("%s: %7ld files, %4ld MB in %.2fs (%7.2f files/s, "
230 "%5.2f MB/s): rc = %d\n",
231 cmdname, nfiles, nbytes >> 20, diff,
232 diff == 0 ? (double)0 : (double)nfiles / diff,
233 diff == 0 ? (double)0 : (double)nbytes/1024/1024 / diff,
239 int main(int argc, char *argv[])
241 unsigned long duration;
247 snprintf(cmdname, sizeof(cmdname), "%s", argv[0]);
249 while((i < argc) && (argv[i][0] == '-')) {
250 switch (argv[i][1]) {
265 duration = strtoul(argv[++i], &end, 0);
267 fprintf(stderr, "%s: error: bad number of seconds '%s'\n",
272 threads = strtoul(argv[++i], &end, 0);
274 fprintf(stderr, "%s: error: bad thread count '%s'\n",
279 signal(SIGUSR1, usr1_handler);
281 for (i = 1; i <= threads; i++) {
285 fprintf(stderr, "%s: error: #%d - %s\n",
286 cmdname, i, strerror(rc = errno));
291 snprintf(cmdname, sizeof(cmdname), "%s-%d", argv[0], i);
292 return (run_one_child(directory, i, duration));
304 printf("%s will run for %ld minutes\n", cmdname, duration/60);
305 return (wait_for_threads(threads));