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/
33 #include <sys/types.h>
47 void usage(char *name)
49 fprintf(stderr, "usage: %s [opts] <dirname> <seconds> <threads>\n",
51 fprintf(stderr, " -q quiet\n");
52 fprintf(stderr, " -a abort other children on first err\n");
58 struct kid_list_t *next;
61 struct kid_list_t *head;
63 int push_kid(pid_t kid)
65 struct kid_list_t *new;
67 new = (struct kid_list_t *)malloc(sizeof(struct kid_list_t));
80 kill(head->kid, SIGTERM);
85 static int usr1_received;
86 void usr1_handler(int unused)
92 int wait_for_threads(int live_threads)
96 while (live_threads > 0) {
100 ret = waitpid(0, &status, 0);
105 fprintf(stderr, "%s: error: wait - %s\n",
106 cmdname, strerror(errno));
111 * This is a hack. We _should_ be able to use
112 * WIFEXITED(status) to see if there was an
113 * error, but it appears to be broken and it
114 * always returns 1 (OK). See wait(2).
116 int err = WEXITSTATUS(status);
120 "%s: error: PID %d had rc=%d\n",
122 /* Record first error */
126 /* Give up on first error */
136 printf("%s done, rc = %d\n", cmdname, rc);
140 void print_err(char *op, char *filename, struct timeval *time, int err)
142 fprintf(stderr, "%s: %d.%.06d error: %s(%s): %s\n",
143 cmdname, (int)(time->tv_sec), (int)(time->tv_usec), op,
144 filename, strerror(errno));
147 int run_one_child(char *file, int thread, int seconds)
149 struct timeval start, cur;
153 int fd, rc = 0, rand, maxrand, len;
154 long nfiles = 0, nbytes = 0;
157 printf("%s: running thread #%d\n", cmdname, thread);
161 * Higher thread numbers will produce bigger random files.
162 * Thread 1 will produce only 0-len files.
164 maxrand = 1; rand = thread;
168 gettimeofday(&start, NULL);
175 gettimeofday(&cur, NULL);
177 if (cur.tv_sec > (start.tv_sec + seconds))
181 snprintf(filename, sizeof(filename), "%s-%d-%ld",
182 file, thread, nfiles);
184 fd = open(filename, O_RDWR | O_CREAT, 0666);
186 print_err("open", filename, &cur, errno);
191 sprintf(buf, "%s %010ld %.19s.%012d\n", cmdname,
192 nfiles++, ctime(&cur.tv_sec), (int)cur.tv_usec);
195 rand = random() % maxrand;
197 if (write(fd, buf, len) != len) {
198 print_err("write", filename, &cur, errno);
206 print_err("close", filename, &cur, errno);
210 if (unlink(filename) < 0) {
211 print_err("unlink", filename, &cur, errno);
212 if (errno == ENOENT) {
213 printf("Ignoring known bug 6082\n");
221 diff = difftime(cur.tv_sec, start.tv_sec);
223 printf("%s: %7ld files, %4ld MB in %.2fs (%7.2f files/s, %5.2f MB/s): rc = %d\n",
224 cmdname, nfiles, nbytes >> 20, diff,
225 diff == 0 ? (double)0 : (double)nfiles / diff,
226 diff == 0 ? (double)0 : (double)nbytes / 1024 / 1024 /
232 int main(int argc, char *argv[])
234 unsigned long duration;
240 snprintf(cmdname, sizeof(cmdname), "%s", argv[0]);
242 while ((i < argc) && (argv[i][0] == '-')) {
243 switch (argv[i][1]) {
258 duration = strtoul(argv[++i], &end, 0);
260 fprintf(stderr, "%s: error: bad number of seconds '%s'\n",
265 threads = strtoul(argv[++i], &end, 0);
267 fprintf(stderr, "%s: error: bad thread count '%s'\n",
272 signal(SIGUSR1, usr1_handler);
274 for (i = 1; i <= threads; i++) {
278 fprintf(stderr, "%s: error: #%d - %s\n",
279 cmdname, i, strerror(rc = errno));
284 snprintf(cmdname, sizeof(cmdname), "%s-%d", argv[0], i);
285 return run_one_child(directory, i, duration);
296 printf("%s will run for %ld minutes\n", cmdname, duration / 60);
297 return wait_for_threads(threads);