Commit | Line | Data |
---|---|---|
d7b40d65 JA |
1 | #include <stdio.h> |
2 | #include <stdlib.h> | |
3 | #include <unistd.h> | |
4 | #include <limits.h> | |
5 | #include <string.h> | |
6 | #include <getopt.h> | |
7 | #include <errno.h> | |
8 | #include <fcntl.h> | |
9 | #include <sys/poll.h> | |
10 | #include <sys/stat.h> | |
11 | #include <sys/types.h> | |
12 | #include <sys/wait.h> | |
13 | #include <sys/time.h> | |
be35036e | 14 | #include <sys/mman.h> |
d7b40d65 JA |
15 | #include <signal.h> |
16 | #include <netinet/in.h> | |
17 | #include <arpa/inet.h> | |
18 | #include <netdb.h> | |
19 | #include <sched.h> | |
20 | ||
21 | #include "splice.h" | |
22 | ||
23 | static int nr_clients = 8; | |
24 | static int net_port = 8888; | |
25 | static int client_loops = 10; | |
26 | static int bind_cpu; | |
27 | static int write_to_null; | |
28 | static int same_file; | |
29 | static int splice_size = SPLICE_SIZE; | |
30 | static char *filename = "splice-file"; | |
000b72a8 | 31 | static unsigned int max_client_run = 15; |
be35036e JA |
32 | static int run_rw = 1; |
33 | static int run_splice = 1; | |
34 | static int run_mmap = 1; | |
d7b40d65 JA |
35 | |
36 | static int nr_cpus; | |
37 | ||
38 | static int usage(char *name) | |
39 | { | |
40 | fprintf(stderr, "Usage %s [options] [filename]:\n", name); | |
41 | fprintf(stderr, "\t[-n] (number of clients]\n"); | |
42 | fprintf(stderr, "\t[-p] (port number)\n"); | |
43 | fprintf(stderr, "\t[-l] (number of loops)\n"); | |
44 | fprintf(stderr, "\t[-z] (write to /dev/null)\n"); | |
45 | fprintf(stderr, "\t[-s] (use 1 file for all)\n"); | |
46 | fprintf(stderr, "\t[-a] (set CPU affinity)\n"); | |
47 | fprintf(stderr, "\t[-b] (splice chunk size)\n"); | |
be35036e JA |
48 | fprintf(stderr, "\t[-t] (max client runtime in seconds)\n"); |
49 | fprintf(stderr, "\t[-c] (clients to run (rw/mmap/splice)\n"); | |
d7b40d65 JA |
50 | return 1; |
51 | } | |
52 | ||
53 | static int parse_options(int argc, char *argv[]) | |
54 | { | |
55 | int c, index = 1; | |
56 | ||
be35036e | 57 | while ((c = getopt(argc, argv, "n:p:l:azsb:t:c:")) != -1) { |
d7b40d65 JA |
58 | switch (c) { |
59 | case 'n': | |
60 | nr_clients = atoi(optarg); | |
61 | index++; | |
62 | break; | |
63 | case 'p': | |
64 | net_port = atoi(optarg); | |
65 | index++; | |
66 | break; | |
67 | case 'l': | |
68 | client_loops = atoi(optarg); | |
69 | index++; | |
70 | break; | |
71 | case 'a': | |
72 | bind_cpu = 1; | |
73 | index++; | |
74 | break; | |
75 | case 'z': | |
76 | write_to_null = 1; | |
77 | index++; | |
78 | break; | |
79 | case 's': | |
80 | same_file = 1; | |
81 | index++; | |
82 | break; | |
83 | case 'b': | |
84 | splice_size = atoi(optarg); | |
85 | index++; | |
86 | break; | |
be35036e JA |
87 | case 't': |
88 | max_client_run = atoi(optarg); | |
89 | index++; | |
90 | break; | |
91 | case 'c': | |
92 | if (!strstr(optarg, "rw")) | |
93 | run_rw = 0; | |
94 | if (!strstr(optarg, "splice")) | |
95 | run_splice = 0; | |
96 | if (!strstr(optarg, "mmap")) | |
97 | run_mmap = 0; | |
98 | index++; | |
99 | break; | |
d7b40d65 JA |
100 | default: |
101 | return -1; | |
102 | } | |
103 | } | |
104 | ||
105 | return index; | |
106 | } | |
107 | ||
a4ecdc0a | 108 | static int bind_to_cpu(int index) |
d7b40d65 JA |
109 | { |
110 | cpu_set_t cpu_mask; | |
111 | pid_t pid; | |
112 | int cpu; | |
113 | ||
114 | if (!bind_cpu || nr_cpus == 1) | |
115 | return 0; | |
116 | ||
117 | cpu = index % nr_cpus; | |
118 | ||
119 | CPU_ZERO(&cpu_mask); | |
120 | CPU_SET((cpu), &cpu_mask); | |
121 | ||
122 | pid = getpid(); | |
123 | if (sched_setaffinity(pid, sizeof(cpu_mask), &cpu_mask) == -1) | |
124 | return error("set affinity"); | |
125 | ||
126 | return 0; | |
127 | } | |
128 | ||
a4ecdc0a | 129 | static int accept_loop(int listen_sk) |
d7b40d65 | 130 | { |
d7b40d65 JA |
131 | struct sockaddr addr; |
132 | unsigned int len = sizeof(addr); | |
133 | int sk; | |
134 | ||
135 | again: | |
136 | sk = accept(listen_sk, &addr, &len); | |
137 | if (sk < 0) | |
138 | return error("accept"); | |
139 | ||
140 | /* read forever */ | |
d7b40d65 JA |
141 | for (;;) { |
142 | int ret = recv(sk, NULL, 128*1024*1024, MSG_TRUNC); | |
a4ecdc0a | 143 | if (ret > 0) |
d7b40d65 | 144 | continue; |
a4ecdc0a | 145 | else if (!ret) |
d7b40d65 JA |
146 | break; |
147 | if (errno == EAGAIN || errno == EINTR) | |
148 | continue; | |
149 | break; | |
150 | } | |
151 | ||
152 | close(sk); | |
153 | goto again; | |
154 | } | |
155 | ||
a4ecdc0a | 156 | static int server(int offset) |
d7b40d65 | 157 | { |
d7b40d65 | 158 | struct sockaddr_in saddr_in; |
a4ecdc0a | 159 | struct sockaddr addr; |
d7b40d65 | 160 | unsigned int len; |
659cd2cc | 161 | int sk, opt; |
d7b40d65 JA |
162 | |
163 | bind_to_cpu(offset); | |
fb02ff37 JA |
164 | if (nice(-20) < 0) |
165 | perror("nice"); | |
d7b40d65 JA |
166 | |
167 | sk = socket(PF_INET, SOCK_STREAM, 0); | |
168 | if (sk < 0) | |
169 | return error("socket"); | |
170 | ||
659cd2cc JA |
171 | opt = 1; |
172 | if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) | |
173 | return error("setsockopt"); | |
174 | ||
d7b40d65 JA |
175 | saddr_in.sin_addr.s_addr = htonl(INADDR_ANY); |
176 | saddr_in.sin_port = htons(net_port + offset); | |
177 | ||
659cd2cc | 178 | if (bind(sk, (struct sockaddr *) &saddr_in, sizeof(saddr_in)) < 0) |
d7b40d65 JA |
179 | return error("bind"); |
180 | ||
181 | if (listen(sk, 1) < 0) | |
182 | return error("listen"); | |
183 | ||
184 | len = sizeof(addr); | |
185 | if (getsockname(sk, &addr, &len) < 0) | |
186 | return error("getsockname"); | |
187 | ||
188 | return accept_loop(sk); | |
189 | } | |
190 | ||
191 | static unsigned long mtime_since(struct timeval *s, struct timeval *e) | |
192 | { | |
193 | double sec, usec; | |
194 | ||
195 | sec = e->tv_sec - s->tv_sec; | |
196 | usec = e->tv_usec - s->tv_usec; | |
197 | if (sec > 0 && usec < 0) { | |
198 | sec--; | |
199 | usec += 1000000; | |
200 | } | |
201 | ||
202 | sec *= (double) 1000; | |
203 | usec /= (double) 1000; | |
204 | ||
205 | return sec + usec; | |
206 | } | |
207 | ||
208 | static unsigned long mtime_since_now(struct timeval *s) | |
209 | { | |
210 | struct timeval t; | |
211 | ||
212 | gettimeofday(&t, NULL); | |
213 | return mtime_since(s, &t); | |
214 | } | |
215 | ||
a4ecdc0a | 216 | static int client_rw(int out_fd, int file_fd, int offset) |
be35036e JA |
217 | { |
218 | int loops = client_loops; | |
219 | struct timeval start; | |
220 | struct stat sb; | |
221 | char *buf; | |
222 | unsigned long long size; | |
223 | unsigned long msecs; | |
224 | ||
225 | if (fstat(file_fd, &sb) < 0) | |
226 | return error("fstat"); | |
227 | ||
228 | buf = malloc(splice_size); | |
229 | ||
230 | gettimeofday(&start, NULL); | |
231 | again: | |
232 | if (lseek(file_fd, 0, SEEK_SET) < 0) | |
233 | return error("lseek"); | |
234 | ||
235 | size = sb.st_size; | |
236 | while (size) { | |
237 | int this_len = min(size, (unsigned long long) splice_size); | |
238 | int ret = read(file_fd, buf, this_len); | |
239 | ||
240 | if (ret < 0) | |
241 | return error("read"); | |
242 | ||
243 | size -= ret; | |
244 | while (ret) { | |
245 | int written = write(out_fd, buf, ret); | |
246 | ||
247 | if (written < 0) | |
248 | return error("write"); | |
249 | ||
250 | ret -= written; | |
251 | } | |
252 | } | |
253 | ||
254 | loops--; | |
255 | ||
256 | if ((mtime_since_now(&start) < max_client_run * 1000) && loops) | |
257 | goto again; | |
258 | ||
a4ecdc0a | 259 | free(buf); |
be35036e JA |
260 | size = sb.st_size >> 10; |
261 | size *= (client_loops - loops); | |
262 | msecs = mtime_since_now(&start); | |
263 | fprintf(stdout, "Client%d (rw): %Lu MiB/sec (%LuMiB in %lu msecs)\n", offset, size / (unsigned long long) msecs, size >> 10, msecs); | |
264 | return 0; | |
265 | } | |
266 | ||
a4ecdc0a | 267 | static int client_mmap(int out_fd, int file_fd, int offset) |
be35036e JA |
268 | { |
269 | int loops = client_loops; | |
270 | struct timeval start; | |
271 | struct stat sb; | |
272 | void *mmap_area, *buf; | |
273 | unsigned long long size; | |
274 | unsigned long msecs; | |
275 | ||
276 | if (fstat(file_fd, &sb) < 0) | |
277 | return error("fstat"); | |
278 | ||
279 | mmap_area = mmap(NULL, sb.st_size, PROT_READ, MAP_SHARED, file_fd, 0); | |
280 | if (mmap_area == MAP_FAILED) | |
281 | return error("mmap"); | |
282 | ||
283 | if (madvise(mmap_area, sb.st_size, MADV_WILLNEED) < 0) | |
284 | return error("madvise"); | |
285 | ||
286 | gettimeofday(&start, NULL); | |
287 | again: | |
288 | buf = mmap_area; | |
289 | size = sb.st_size; | |
290 | while (size) { | |
291 | int this_len = min(size, (unsigned long long) splice_size); | |
292 | int ret = write(out_fd, buf, this_len); | |
293 | ||
294 | if (ret < 0) | |
295 | return error("write"); | |
296 | ||
297 | buf += ret; | |
298 | size -= ret; | |
299 | } | |
300 | ||
301 | loops--; | |
302 | ||
303 | if ((mtime_since_now(&start) < max_client_run * 1000) && loops) | |
304 | goto again; | |
305 | ||
306 | size = sb.st_size >> 10; | |
307 | size *= (client_loops - loops); | |
308 | msecs = mtime_since_now(&start); | |
309 | fprintf(stdout, "Client%d (mmap): %Lu MiB/sec (%LuMiB in %lu msecs)\n", offset, size / (unsigned long long) msecs, size >> 10, msecs); | |
310 | munmap(mmap_area, sb.st_size); | |
311 | return 0; | |
312 | ||
313 | } | |
314 | ||
a4ecdc0a | 315 | static int client_splice_loop(int out_fd, int fd, int *pfd, int offset) |
d7b40d65 JA |
316 | { |
317 | struct timeval start; | |
318 | unsigned long long size; | |
319 | unsigned long msecs; | |
320 | struct stat sb; | |
321 | int loops = client_loops; | |
322 | loff_t off; | |
323 | ||
324 | if (fstat(fd, &sb) < 0) | |
325 | return error("fstat"); | |
326 | ||
327 | gettimeofday(&start, NULL); | |
d7b40d65 JA |
328 | again: |
329 | size = sb.st_size; | |
330 | off = 0; | |
331 | ||
332 | do { | |
13b72067 | 333 | int ret = ssplice(fd, &off, pfd[1], NULL, min(size, (unsigned long long) splice_size), 0); |
d7b40d65 JA |
334 | |
335 | if (ret <= 0) | |
336 | return error("splice-in"); | |
337 | ||
338 | size -= ret; | |
339 | while (ret > 0) { | |
340 | int flags = size ? SPLICE_F_MORE : 0; | |
13b72067 | 341 | int written = ssplice(pfd[0], NULL, out_fd, NULL, ret, flags); |
d7b40d65 JA |
342 | |
343 | if (written <= 0) | |
344 | return error("splice-out"); | |
345 | ||
346 | ret -= written; | |
347 | } | |
348 | } while (size); | |
349 | ||
be35036e JA |
350 | loops--; |
351 | ||
352 | if ((mtime_since_now(&start) < max_client_run * 1000) && loops) | |
d7b40d65 JA |
353 | goto again; |
354 | ||
355 | size = sb.st_size >> 10; | |
be35036e | 356 | size *= (client_loops - loops); |
d7b40d65 | 357 | msecs = mtime_since_now(&start); |
be35036e JA |
358 | fprintf(stdout, "Client%d (splice): %Lu MiB/sec (%LuMiB in %lu msecs)\n", offset, size / (unsigned long long) msecs, size >> 10, msecs); |
359 | return 0; | |
360 | } | |
361 | ||
a4ecdc0a | 362 | static int client_splice(int out_fd, int file_fd, int offset) |
be35036e JA |
363 | { |
364 | int pfd[2], ret; | |
365 | ||
366 | if (pipe(pfd) < 0) | |
367 | return error("pipe"); | |
368 | ||
369 | ret = client_splice_loop(out_fd, file_fd, pfd, offset); | |
370 | close(pfd[0]); | |
371 | close(pfd[1]); | |
372 | return ret; | |
373 | } | |
374 | ||
a4ecdc0a | 375 | static int do_client(int out_fd, int file_fd, int offset) |
be35036e | 376 | { |
4f4118c9 JA |
377 | int ret; |
378 | ||
379 | if (run_splice) { | |
380 | ret = client_splice(out_fd, file_fd, offset); | |
381 | if (ret) | |
382 | return ret; | |
383 | } | |
384 | if (run_mmap) { | |
385 | ret = client_mmap(out_fd, file_fd, offset); | |
386 | if (ret) | |
387 | return ret; | |
388 | } | |
389 | if (run_rw) { | |
390 | ret = client_rw(out_fd, file_fd, offset); | |
391 | if (ret) | |
392 | return ret; | |
393 | } | |
d7b40d65 JA |
394 | return 0; |
395 | } | |
396 | ||
397 | static int client_open_net(int offset) | |
398 | { | |
399 | int sk = socket(PF_INET, SOCK_STREAM, 0); | |
400 | struct sockaddr_in s_to; | |
401 | struct hostent *hp; | |
402 | ||
403 | hp = gethostbyname("localhost"); | |
404 | if (!hp) | |
405 | return error("gethostbyname"); | |
406 | ||
407 | bzero((char *) &s_to, sizeof (s_to)); | |
408 | bcopy((char *) hp->h_addr, (char *) &(s_to.sin_addr), hp->h_length); | |
409 | s_to.sin_family = hp->h_addrtype; | |
410 | s_to.sin_port = htons(net_port + offset); | |
411 | ||
412 | if (connect(sk, (struct sockaddr *)&s_to, sizeof(s_to)) < 0) | |
413 | return error("connect"); | |
414 | ||
415 | return sk; | |
416 | } | |
417 | ||
a4ecdc0a | 418 | static int client(int offset) |
d7b40d65 JA |
419 | { |
420 | int file_fd, out_fd; | |
421 | char fname[64]; | |
d7b40d65 JA |
422 | |
423 | bind_to_cpu(offset); | |
fb02ff37 JA |
424 | if (nice(-20) < 0) |
425 | perror("nice"); | |
d7b40d65 JA |
426 | |
427 | if (!write_to_null) | |
428 | out_fd = client_open_net(offset); | |
429 | else | |
430 | out_fd = open("/dev/null", O_WRONLY); | |
431 | ||
432 | if (out_fd < 0) | |
433 | return error("socket"); | |
434 | ||
435 | sprintf(fname, "%s%d", filename, same_file ? 0 : offset); | |
be35036e | 436 | file_fd = open(fname, O_RDONLY); |
d7b40d65 JA |
437 | if (file_fd < 0) |
438 | return error("open"); | |
439 | ||
be35036e | 440 | return do_client(out_fd, file_fd, offset); |
d7b40d65 JA |
441 | } |
442 | ||
443 | int main(int argc, char *argv[]) | |
444 | { | |
445 | pid_t *spids, *cpids; | |
446 | int i, index; | |
447 | ||
448 | index = parse_options(argc, argv); | |
449 | if (index < 0) | |
450 | return usage(argv[0]); | |
451 | ||
452 | if (index < argc) | |
453 | filename = argv[index]; | |
454 | ||
455 | spids = malloc(nr_clients * sizeof(pid_t)); | |
456 | cpids = malloc(nr_clients * sizeof(pid_t)); | |
457 | memset(spids, 0, nr_clients * sizeof(pid_t)); | |
458 | memset(cpids, 0, nr_clients * sizeof(pid_t)); | |
459 | ||
460 | nr_cpus = sysconf(_SC_NPROCESSORS_ONLN); | |
461 | if (nr_cpus < 0) | |
462 | return error("_SC_NPROCESSORS_ONLN"); | |
463 | ||
d7b40d65 JA |
464 | /* |
465 | * fork servers | |
466 | */ | |
467 | if (!write_to_null) { | |
468 | for (i = 0; i < nr_clients; i++) { | |
469 | pid_t pid = fork(); | |
470 | ||
471 | if (pid) | |
472 | spids[i] = pid; | |
473 | else { | |
474 | server(i); | |
475 | spids[i] = 0; | |
476 | exit(0); | |
477 | } | |
478 | } | |
479 | sleep(1); /* should have servers started now */ | |
480 | } | |
481 | ||
482 | /* | |
483 | * fork clients | |
484 | */ | |
485 | for (i = 0; i < nr_clients; i++) { | |
486 | pid_t pid = fork(); | |
487 | ||
488 | if (pid) | |
489 | cpids[i] = pid; | |
490 | else { | |
491 | client(i); | |
492 | cpids[i] = 0; | |
493 | exit(0); | |
494 | } | |
495 | } | |
496 | ||
497 | /* | |
498 | * wait for clients to exit | |
499 | */ | |
500 | fprintf(stdout, "Waiting for clients\n"); | |
501 | for (i = 0; i < nr_clients; i++) { | |
502 | if (cpids[i]) { | |
503 | waitpid(cpids[i], NULL, 0); | |
504 | cpids[i] = 0; | |
505 | } | |
506 | } | |
507 | ||
508 | /* | |
509 | * then kill servers | |
510 | */ | |
511 | for (i = 0; i < nr_clients; i++) { | |
512 | if (spids[i]) { | |
513 | kill(spids[i], SIGKILL); | |
514 | waitpid(spids[i], NULL, 0); | |
515 | spids[i] = 0; | |
516 | } | |
517 | } | |
518 | ||
519 | return 0; | |
520 | } |