Loading...
1/*
2 *
3 * sched-messaging.c
4 *
5 * messaging: Benchmark for scheduler and IPC mechanisms
6 *
7 * Based on hackbench by Rusty Russell <rusty@rustcorp.com.au>
8 * Ported to perf by Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
9 *
10 */
11
12#include "../perf.h"
13#include "../util/util.h"
14#include <subcmd/parse-options.h>
15#include "../builtin.h"
16#include "bench.h"
17
18/* Test groups of 20 processes spraying to 20 receivers */
19#include <pthread.h>
20#include <stdio.h>
21#include <stdlib.h>
22#include <string.h>
23#include <errno.h>
24#include <unistd.h>
25#include <sys/types.h>
26#include <sys/socket.h>
27#include <sys/wait.h>
28#include <sys/time.h>
29#include <poll.h>
30#include <limits.h>
31#include <err.h>
32
33#define DATASIZE 100
34
35static bool use_pipes = false;
36static unsigned int nr_loops = 100;
37static bool thread_mode = false;
38static unsigned int num_groups = 10;
39
40struct sender_context {
41 unsigned int num_fds;
42 int ready_out;
43 int wakefd;
44 int out_fds[0];
45};
46
47struct receiver_context {
48 unsigned int num_packets;
49 int in_fds[2];
50 int ready_out;
51 int wakefd;
52};
53
54static void fdpair(int fds[2])
55{
56 if (use_pipes) {
57 if (pipe(fds) == 0)
58 return;
59 } else {
60 if (socketpair(AF_UNIX, SOCK_STREAM, 0, fds) == 0)
61 return;
62 }
63
64 err(EXIT_FAILURE, use_pipes ? "pipe()" : "socketpair()");
65}
66
67/* Block until we're ready to go */
68static void ready(int ready_out, int wakefd)
69{
70 char dummy;
71 struct pollfd pollfd = { .fd = wakefd, .events = POLLIN };
72
73 /* Tell them we're ready. */
74 if (write(ready_out, &dummy, 1) != 1)
75 err(EXIT_FAILURE, "CLIENT: ready write");
76
77 /* Wait for "GO" signal */
78 if (poll(&pollfd, 1, -1) != 1)
79 err(EXIT_FAILURE, "poll");
80}
81
82/* Sender sprays nr_loops messages down each file descriptor */
83static void *sender(struct sender_context *ctx)
84{
85 char data[DATASIZE];
86 unsigned int i, j;
87
88 ready(ctx->ready_out, ctx->wakefd);
89
90 /* Now pump to every receiver. */
91 for (i = 0; i < nr_loops; i++) {
92 for (j = 0; j < ctx->num_fds; j++) {
93 int ret, done = 0;
94
95again:
96 ret = write(ctx->out_fds[j], data + done,
97 sizeof(data)-done);
98 if (ret < 0)
99 err(EXIT_FAILURE, "SENDER: write");
100 done += ret;
101 if (done < DATASIZE)
102 goto again;
103 }
104 }
105
106 return NULL;
107}
108
109
110/* One receiver per fd */
111static void *receiver(struct receiver_context* ctx)
112{
113 unsigned int i;
114
115 if (!thread_mode)
116 close(ctx->in_fds[1]);
117
118 /* Wait for start... */
119 ready(ctx->ready_out, ctx->wakefd);
120
121 /* Receive them all */
122 for (i = 0; i < ctx->num_packets; i++) {
123 char data[DATASIZE];
124 int ret, done = 0;
125
126again:
127 ret = read(ctx->in_fds[0], data + done, DATASIZE - done);
128 if (ret < 0)
129 err(EXIT_FAILURE, "SERVER: read");
130 done += ret;
131 if (done < DATASIZE)
132 goto again;
133 }
134
135 return NULL;
136}
137
138static pthread_t create_worker(void *ctx, void *(*func)(void *))
139{
140 pthread_attr_t attr;
141 pthread_t childid;
142 int ret;
143
144 if (!thread_mode) {
145 /* process mode */
146 /* Fork the receiver. */
147 switch (fork()) {
148 case -1:
149 err(EXIT_FAILURE, "fork()");
150 break;
151 case 0:
152 (*func) (ctx);
153 exit(0);
154 break;
155 default:
156 break;
157 }
158
159 return (pthread_t)0;
160 }
161
162 if (pthread_attr_init(&attr) != 0)
163 err(EXIT_FAILURE, "pthread_attr_init:");
164
165#ifndef __ia64__
166 if (pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN) != 0)
167 err(EXIT_FAILURE, "pthread_attr_setstacksize");
168#endif
169
170 ret = pthread_create(&childid, &attr, func, ctx);
171 if (ret != 0)
172 err(EXIT_FAILURE, "pthread_create failed");
173
174 return childid;
175}
176
177static void reap_worker(pthread_t id)
178{
179 int proc_status;
180 void *thread_status;
181
182 if (!thread_mode) {
183 /* process mode */
184 wait(&proc_status);
185 if (!WIFEXITED(proc_status))
186 exit(1);
187 } else {
188 pthread_join(id, &thread_status);
189 }
190}
191
192/* One group of senders and receivers */
193static unsigned int group(pthread_t *pth,
194 unsigned int num_fds,
195 int ready_out,
196 int wakefd)
197{
198 unsigned int i;
199 struct sender_context *snd_ctx = malloc(sizeof(struct sender_context)
200 + num_fds * sizeof(int));
201
202 if (!snd_ctx)
203 err(EXIT_FAILURE, "malloc()");
204
205 for (i = 0; i < num_fds; i++) {
206 int fds[2];
207 struct receiver_context *ctx = malloc(sizeof(*ctx));
208
209 if (!ctx)
210 err(EXIT_FAILURE, "malloc()");
211
212
213 /* Create the pipe between client and server */
214 fdpair(fds);
215
216 ctx->num_packets = num_fds * nr_loops;
217 ctx->in_fds[0] = fds[0];
218 ctx->in_fds[1] = fds[1];
219 ctx->ready_out = ready_out;
220 ctx->wakefd = wakefd;
221
222 pth[i] = create_worker(ctx, (void *)receiver);
223
224 snd_ctx->out_fds[i] = fds[1];
225 if (!thread_mode)
226 close(fds[0]);
227 }
228
229 /* Now we have all the fds, fork the senders */
230 for (i = 0; i < num_fds; i++) {
231 snd_ctx->ready_out = ready_out;
232 snd_ctx->wakefd = wakefd;
233 snd_ctx->num_fds = num_fds;
234
235 pth[num_fds+i] = create_worker(snd_ctx, (void *)sender);
236 }
237
238 /* Close the fds we have left */
239 if (!thread_mode)
240 for (i = 0; i < num_fds; i++)
241 close(snd_ctx->out_fds[i]);
242
243 /* Return number of children to reap */
244 return num_fds * 2;
245}
246
247static const struct option options[] = {
248 OPT_BOOLEAN('p', "pipe", &use_pipes,
249 "Use pipe() instead of socketpair()"),
250 OPT_BOOLEAN('t', "thread", &thread_mode,
251 "Be multi thread instead of multi process"),
252 OPT_UINTEGER('g', "group", &num_groups, "Specify number of groups"),
253 OPT_UINTEGER('l', "nr_loops", &nr_loops, "Specify the number of loops to run (default: 100)"),
254 OPT_END()
255};
256
257static const char * const bench_sched_message_usage[] = {
258 "perf bench sched messaging <options>",
259 NULL
260};
261
262int bench_sched_messaging(int argc, const char **argv,
263 const char *prefix __maybe_unused)
264{
265 unsigned int i, total_children;
266 struct timeval start, stop, diff;
267 unsigned int num_fds = 20;
268 int readyfds[2], wakefds[2];
269 char dummy;
270 pthread_t *pth_tab;
271
272 argc = parse_options(argc, argv, options,
273 bench_sched_message_usage, 0);
274
275 pth_tab = malloc(num_fds * 2 * num_groups * sizeof(pthread_t));
276 if (!pth_tab)
277 err(EXIT_FAILURE, "main:malloc()");
278
279 fdpair(readyfds);
280 fdpair(wakefds);
281
282 total_children = 0;
283 for (i = 0; i < num_groups; i++)
284 total_children += group(pth_tab+total_children, num_fds,
285 readyfds[1], wakefds[0]);
286
287 /* Wait for everyone to be ready */
288 for (i = 0; i < total_children; i++)
289 if (read(readyfds[0], &dummy, 1) != 1)
290 err(EXIT_FAILURE, "Reading for readyfds");
291
292 gettimeofday(&start, NULL);
293
294 /* Kick them off */
295 if (write(wakefds[1], &dummy, 1) != 1)
296 err(EXIT_FAILURE, "Writing to start them");
297
298 /* Reap them all */
299 for (i = 0; i < total_children; i++)
300 reap_worker(pth_tab[i]);
301
302 gettimeofday(&stop, NULL);
303
304 timersub(&stop, &start, &diff);
305
306 switch (bench_format) {
307 case BENCH_FORMAT_DEFAULT:
308 printf("# %d sender and receiver %s per group\n",
309 num_fds, thread_mode ? "threads" : "processes");
310 printf("# %d groups == %d %s run\n\n",
311 num_groups, num_groups * 2 * num_fds,
312 thread_mode ? "threads" : "processes");
313 printf(" %14s: %lu.%03lu [sec]\n", "Total time",
314 diff.tv_sec,
315 (unsigned long) (diff.tv_usec/1000));
316 break;
317 case BENCH_FORMAT_SIMPLE:
318 printf("%lu.%03lu\n", diff.tv_sec,
319 (unsigned long) (diff.tv_usec/1000));
320 break;
321 default:
322 /* reaching here is something disaster */
323 fprintf(stderr, "Unknown format:%d\n", bench_format);
324 exit(1);
325 break;
326 }
327
328 free(pth_tab);
329
330 return 0;
331}
1// SPDX-License-Identifier: GPL-2.0
2/*
3 *
4 * sched-messaging.c
5 *
6 * messaging: Benchmark for scheduler and IPC mechanisms
7 *
8 * Based on hackbench by Rusty Russell <rusty@rustcorp.com.au>
9 * Ported to perf by Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
10 *
11 */
12
13#include <subcmd/parse-options.h>
14#include "bench.h"
15
16/* Test groups of 20 processes spraying to 20 receivers */
17#include <pthread.h>
18#include <stdio.h>
19#include <stdlib.h>
20#include <string.h>
21#include <errno.h>
22#include <unistd.h>
23#include <sys/types.h>
24#include <sys/socket.h>
25#include <sys/wait.h>
26#include <sys/time.h>
27#include <poll.h>
28#include <limits.h>
29#include <err.h>
30#include <linux/time64.h>
31
32#define DATASIZE 100
33
34static bool use_pipes = false;
35static unsigned int nr_loops = 100;
36static bool thread_mode = false;
37static unsigned int num_groups = 10;
38
39struct sender_context {
40 unsigned int num_fds;
41 int ready_out;
42 int wakefd;
43 int out_fds[0];
44};
45
46struct receiver_context {
47 unsigned int num_packets;
48 int in_fds[2];
49 int ready_out;
50 int wakefd;
51};
52
53static void fdpair(int fds[2])
54{
55 if (use_pipes) {
56 if (pipe(fds) == 0)
57 return;
58 } else {
59 if (socketpair(AF_UNIX, SOCK_STREAM, 0, fds) == 0)
60 return;
61 }
62
63 err(EXIT_FAILURE, use_pipes ? "pipe()" : "socketpair()");
64}
65
66/* Block until we're ready to go */
67static void ready(int ready_out, int wakefd)
68{
69 char dummy;
70 struct pollfd pollfd = { .fd = wakefd, .events = POLLIN };
71
72 /* Tell them we're ready. */
73 if (write(ready_out, &dummy, 1) != 1)
74 err(EXIT_FAILURE, "CLIENT: ready write");
75
76 /* Wait for "GO" signal */
77 if (poll(&pollfd, 1, -1) != 1)
78 err(EXIT_FAILURE, "poll");
79}
80
81/* Sender sprays nr_loops messages down each file descriptor */
82static void *sender(struct sender_context *ctx)
83{
84 char data[DATASIZE];
85 unsigned int i, j;
86
87 ready(ctx->ready_out, ctx->wakefd);
88
89 /* Now pump to every receiver. */
90 for (i = 0; i < nr_loops; i++) {
91 for (j = 0; j < ctx->num_fds; j++) {
92 int ret, done = 0;
93
94again:
95 ret = write(ctx->out_fds[j], data + done,
96 sizeof(data)-done);
97 if (ret < 0)
98 err(EXIT_FAILURE, "SENDER: write");
99 done += ret;
100 if (done < DATASIZE)
101 goto again;
102 }
103 }
104
105 return NULL;
106}
107
108
109/* One receiver per fd */
110static void *receiver(struct receiver_context* ctx)
111{
112 unsigned int i;
113
114 if (!thread_mode)
115 close(ctx->in_fds[1]);
116
117 /* Wait for start... */
118 ready(ctx->ready_out, ctx->wakefd);
119
120 /* Receive them all */
121 for (i = 0; i < ctx->num_packets; i++) {
122 char data[DATASIZE];
123 int ret, done = 0;
124
125again:
126 ret = read(ctx->in_fds[0], data + done, DATASIZE - done);
127 if (ret < 0)
128 err(EXIT_FAILURE, "SERVER: read");
129 done += ret;
130 if (done < DATASIZE)
131 goto again;
132 }
133
134 return NULL;
135}
136
137static pthread_t create_worker(void *ctx, void *(*func)(void *))
138{
139 pthread_attr_t attr;
140 pthread_t childid;
141 int ret;
142
143 if (!thread_mode) {
144 /* process mode */
145 /* Fork the receiver. */
146 switch (fork()) {
147 case -1:
148 err(EXIT_FAILURE, "fork()");
149 break;
150 case 0:
151 (*func) (ctx);
152 exit(0);
153 break;
154 default:
155 break;
156 }
157
158 return (pthread_t)0;
159 }
160
161 if (pthread_attr_init(&attr) != 0)
162 err(EXIT_FAILURE, "pthread_attr_init:");
163
164#ifndef __ia64__
165 if (pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN) != 0)
166 err(EXIT_FAILURE, "pthread_attr_setstacksize");
167#endif
168
169 ret = pthread_create(&childid, &attr, func, ctx);
170 if (ret != 0)
171 err(EXIT_FAILURE, "pthread_create failed");
172
173 return childid;
174}
175
176static void reap_worker(pthread_t id)
177{
178 int proc_status;
179 void *thread_status;
180
181 if (!thread_mode) {
182 /* process mode */
183 wait(&proc_status);
184 if (!WIFEXITED(proc_status))
185 exit(1);
186 } else {
187 pthread_join(id, &thread_status);
188 }
189}
190
191/* One group of senders and receivers */
192static unsigned int group(pthread_t *pth,
193 unsigned int num_fds,
194 int ready_out,
195 int wakefd)
196{
197 unsigned int i;
198 struct sender_context *snd_ctx = malloc(sizeof(struct sender_context)
199 + num_fds * sizeof(int));
200
201 if (!snd_ctx)
202 err(EXIT_FAILURE, "malloc()");
203
204 for (i = 0; i < num_fds; i++) {
205 int fds[2];
206 struct receiver_context *ctx = malloc(sizeof(*ctx));
207
208 if (!ctx)
209 err(EXIT_FAILURE, "malloc()");
210
211
212 /* Create the pipe between client and server */
213 fdpair(fds);
214
215 ctx->num_packets = num_fds * nr_loops;
216 ctx->in_fds[0] = fds[0];
217 ctx->in_fds[1] = fds[1];
218 ctx->ready_out = ready_out;
219 ctx->wakefd = wakefd;
220
221 pth[i] = create_worker(ctx, (void *)receiver);
222
223 snd_ctx->out_fds[i] = fds[1];
224 if (!thread_mode)
225 close(fds[0]);
226 }
227
228 /* Now we have all the fds, fork the senders */
229 for (i = 0; i < num_fds; i++) {
230 snd_ctx->ready_out = ready_out;
231 snd_ctx->wakefd = wakefd;
232 snd_ctx->num_fds = num_fds;
233
234 pth[num_fds+i] = create_worker(snd_ctx, (void *)sender);
235 }
236
237 /* Close the fds we have left */
238 if (!thread_mode)
239 for (i = 0; i < num_fds; i++)
240 close(snd_ctx->out_fds[i]);
241
242 /* Return number of children to reap */
243 return num_fds * 2;
244}
245
246static const struct option options[] = {
247 OPT_BOOLEAN('p', "pipe", &use_pipes,
248 "Use pipe() instead of socketpair()"),
249 OPT_BOOLEAN('t', "thread", &thread_mode,
250 "Be multi thread instead of multi process"),
251 OPT_UINTEGER('g', "group", &num_groups, "Specify number of groups"),
252 OPT_UINTEGER('l', "nr_loops", &nr_loops, "Specify the number of loops to run (default: 100)"),
253 OPT_END()
254};
255
256static const char * const bench_sched_message_usage[] = {
257 "perf bench sched messaging <options>",
258 NULL
259};
260
261int bench_sched_messaging(int argc, const char **argv)
262{
263 unsigned int i, total_children;
264 struct timeval start, stop, diff;
265 unsigned int num_fds = 20;
266 int readyfds[2], wakefds[2];
267 char dummy;
268 pthread_t *pth_tab;
269
270 argc = parse_options(argc, argv, options,
271 bench_sched_message_usage, 0);
272
273 pth_tab = malloc(num_fds * 2 * num_groups * sizeof(pthread_t));
274 if (!pth_tab)
275 err(EXIT_FAILURE, "main:malloc()");
276
277 fdpair(readyfds);
278 fdpair(wakefds);
279
280 total_children = 0;
281 for (i = 0; i < num_groups; i++)
282 total_children += group(pth_tab+total_children, num_fds,
283 readyfds[1], wakefds[0]);
284
285 /* Wait for everyone to be ready */
286 for (i = 0; i < total_children; i++)
287 if (read(readyfds[0], &dummy, 1) != 1)
288 err(EXIT_FAILURE, "Reading for readyfds");
289
290 gettimeofday(&start, NULL);
291
292 /* Kick them off */
293 if (write(wakefds[1], &dummy, 1) != 1)
294 err(EXIT_FAILURE, "Writing to start them");
295
296 /* Reap them all */
297 for (i = 0; i < total_children; i++)
298 reap_worker(pth_tab[i]);
299
300 gettimeofday(&stop, NULL);
301
302 timersub(&stop, &start, &diff);
303
304 switch (bench_format) {
305 case BENCH_FORMAT_DEFAULT:
306 printf("# %d sender and receiver %s per group\n",
307 num_fds, thread_mode ? "threads" : "processes");
308 printf("# %d groups == %d %s run\n\n",
309 num_groups, num_groups * 2 * num_fds,
310 thread_mode ? "threads" : "processes");
311 printf(" %14s: %lu.%03lu [sec]\n", "Total time",
312 diff.tv_sec,
313 (unsigned long) (diff.tv_usec / USEC_PER_MSEC));
314 break;
315 case BENCH_FORMAT_SIMPLE:
316 printf("%lu.%03lu\n", diff.tv_sec,
317 (unsigned long) (diff.tv_usec / USEC_PER_MSEC));
318 break;
319 default:
320 /* reaching here is something disaster */
321 fprintf(stderr, "Unknown format:%d\n", bench_format);
322 exit(1);
323 break;
324 }
325
326 free(pth_tab);
327
328 return 0;
329}