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8f155917 LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2013 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <ctype.h> | |
23 | #include <sys/wait.h> | |
24 | ||
25 | #include "util.h" | |
26 | #include "log.h" | |
061b2c43 | 27 | #include "time-util.h" |
8f155917 LP |
28 | |
29 | #include "sd-bus.h" | |
30 | #include "bus-message.h" | |
31 | #include "bus-error.h" | |
32 | #include "bus-kernel.h" | |
33 | #include "bus-internal.h" | |
40ca29a1 | 34 | #include "bus-util.h" |
8f155917 | 35 | |
83d97ce6 | 36 | #define MAX_SIZE (4*1024*1024) |
8f155917 | 37 | |
59967d30 | 38 | static usec_t arg_loop_usec = 100 * USEC_PER_MSEC; |
061b2c43 | 39 | |
832d16a6 | 40 | static void server(sd_bus *b, size_t *result) { |
8f155917 LP |
41 | int r; |
42 | ||
43 | for (;;) { | |
44 | _cleanup_bus_message_unref_ sd_bus_message *m = NULL; | |
45 | ||
46 | r = sd_bus_process(b, &m); | |
47 | assert_se(r >= 0); | |
48 | ||
49 | if (r == 0) | |
50 | assert_se(sd_bus_wait(b, (usec_t) -1) >= 0); | |
8f155917 LP |
51 | if (!m) |
52 | continue; | |
53 | ||
832d16a6 LP |
54 | if (sd_bus_message_is_method_call(m, "benchmark.server", "Ping")) |
55 | assert_se(sd_bus_reply_method_return(b, m, NULL) >= 0); | |
56 | else if (sd_bus_message_is_method_call(m, "benchmark.server", "Work")) { | |
57 | const void *p; | |
58 | size_t sz; | |
8f155917 | 59 | |
832d16a6 LP |
60 | /* Make sure the mmap is mapped */ |
61 | assert_se(sd_bus_message_read_array(m, 'y', &p, &sz) > 0); | |
8f155917 | 62 | |
832d16a6 | 63 | assert_se(sd_bus_reply_method_return(b, m, NULL) >= 0); |
8f155917 | 64 | } else if (sd_bus_message_is_method_call(m, "benchmark.server", "Exit")) { |
832d16a6 LP |
65 | uint64_t res; |
66 | assert_se(sd_bus_message_read(m, "t", &res) > 0); | |
8f155917 | 67 | |
832d16a6 | 68 | *result = res; |
8f155917 LP |
69 | return; |
70 | ||
8f155917 LP |
71 | } else |
72 | assert_not_reached("Unknown method"); | |
73 | } | |
74 | } | |
75 | ||
832d16a6 | 76 | static void transaction(sd_bus *b, size_t sz) { |
8f155917 | 77 | _cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL; |
832d16a6 | 78 | uint8_t *p; |
8f155917 LP |
79 | |
80 | assert_se(sd_bus_message_new_method_call(b, ":1.1", "/", "benchmark.server", "Work", &m) >= 0); | |
81 | assert_se(sd_bus_message_append_array_space(m, 'y', sz, (void**) &p) >= 0); | |
82 | ||
31175451 | 83 | memset(p, 0x80, sz); |
8f155917 | 84 | |
c49b30a2 | 85 | assert_se(sd_bus_call(b, m, 0, NULL, &reply) >= 0); |
832d16a6 LP |
86 | } |
87 | ||
31175451 | 88 | static void client_bisect(const char *address) { |
832d16a6 LP |
89 | _cleanup_bus_message_unref_ sd_bus_message *x = NULL; |
90 | size_t lsize, rsize, csize; | |
91 | sd_bus *b; | |
92 | int r; | |
93 | ||
94 | r = sd_bus_new(&b); | |
95 | assert_se(r >= 0); | |
96 | ||
97 | r = sd_bus_set_address(b, address); | |
98 | assert_se(r >= 0); | |
99 | ||
100 | r = sd_bus_start(b); | |
101 | assert_se(r >= 0); | |
102 | ||
103 | assert_se(sd_bus_call_method(b, ":1.1", "/", "benchmark.server", "Ping", NULL, NULL, NULL) >= 0); | |
104 | ||
105 | lsize = 1; | |
106 | rsize = MAX_SIZE; | |
107 | ||
31175451 KS |
108 | printf("SIZE\tCOPY\tMEMFD\n"); |
109 | ||
832d16a6 | 110 | for (;;) { |
061b2c43 LP |
111 | usec_t t; |
112 | unsigned n_copying, n_memfd; | |
832d16a6 LP |
113 | |
114 | csize = (lsize + rsize) / 2; | |
115 | ||
832d16a6 LP |
116 | if (csize <= lsize) |
117 | break; | |
118 | ||
119 | if (csize <= 0) | |
120 | break; | |
8f155917 | 121 | |
83d97ce6 | 122 | printf("%zu\t", csize); |
31175451 | 123 | |
832d16a6 | 124 | b->use_memfd = 0; |
061b2c43 | 125 | |
832d16a6 | 126 | t = now(CLOCK_MONOTONIC); |
061b2c43 | 127 | for (n_copying = 0;; n_copying++) { |
832d16a6 | 128 | transaction(b, csize); |
061b2c43 LP |
129 | if (now(CLOCK_MONOTONIC) >= t + arg_loop_usec) |
130 | break; | |
131 | } | |
31175451 | 132 | printf("%u\t", (unsigned) ((n_copying * USEC_PER_SEC) / arg_loop_usec)); |
061b2c43 | 133 | |
832d16a6 | 134 | b->use_memfd = -1; |
061b2c43 | 135 | |
832d16a6 | 136 | t = now(CLOCK_MONOTONIC); |
061b2c43 | 137 | for (n_memfd = 0;; n_memfd++) { |
832d16a6 | 138 | transaction(b, csize); |
061b2c43 LP |
139 | if (now(CLOCK_MONOTONIC) >= t + arg_loop_usec) |
140 | break; | |
141 | } | |
6cbf6931 | 142 | printf("%u\n", (unsigned) ((n_memfd * USEC_PER_SEC) / arg_loop_usec)); |
061b2c43 LP |
143 | |
144 | if (n_copying == n_memfd) | |
832d16a6 LP |
145 | break; |
146 | ||
061b2c43 | 147 | if (n_copying > n_memfd) |
832d16a6 LP |
148 | lsize = csize; |
149 | else | |
150 | rsize = csize; | |
8f155917 LP |
151 | } |
152 | ||
31175451 KS |
153 | b->use_memfd = 1; |
154 | assert_se(sd_bus_message_new_method_call(b, ":1.1", "/", "benchmark.server", "Exit", &x) >= 0); | |
155 | assert_se(sd_bus_message_append(x, "t", csize) >= 0); | |
156 | assert_se(sd_bus_send(b, x, NULL) >= 0); | |
157 | ||
158 | sd_bus_unref(b); | |
159 | } | |
160 | ||
161 | static void client_chart(const char *address) { | |
162 | _cleanup_bus_message_unref_ sd_bus_message *x = NULL; | |
163 | size_t csize; | |
164 | sd_bus *b; | |
165 | int r; | |
166 | ||
167 | r = sd_bus_new(&b); | |
168 | assert_se(r >= 0); | |
169 | ||
170 | r = sd_bus_set_address(b, address); | |
171 | assert_se(r >= 0); | |
172 | ||
173 | r = sd_bus_start(b); | |
174 | assert_se(r >= 0); | |
175 | ||
176 | assert_se(sd_bus_call_method(b, ":1.1", "/", "benchmark.server", "Ping", NULL, NULL, NULL) >= 0); | |
177 | ||
178 | printf("SIZE\tCOPY\tMEMFD\n"); | |
179 | ||
83d97ce6 | 180 | for (csize = 1; csize <= MAX_SIZE; csize *= 2) { |
31175451 KS |
181 | usec_t t; |
182 | unsigned n_copying, n_memfd; | |
183 | ||
83d97ce6 | 184 | printf("%zu\t", csize); |
31175451 KS |
185 | |
186 | b->use_memfd = 0; | |
187 | ||
188 | t = now(CLOCK_MONOTONIC); | |
189 | for (n_copying = 0;; n_copying++) { | |
190 | transaction(b, csize); | |
191 | if (now(CLOCK_MONOTONIC) >= t + arg_loop_usec) | |
192 | break; | |
193 | } | |
194 | ||
195 | printf("%u\t", (unsigned) ((n_copying * USEC_PER_SEC) / arg_loop_usec)); | |
196 | ||
197 | b->use_memfd = -1; | |
198 | ||
199 | t = now(CLOCK_MONOTONIC); | |
200 | for (n_memfd = 0;; n_memfd++) { | |
201 | transaction(b, csize); | |
202 | if (now(CLOCK_MONOTONIC) >= t + arg_loop_usec) | |
203 | break; | |
204 | } | |
205 | ||
206 | printf("%u\n", (unsigned) ((n_memfd * USEC_PER_SEC) / arg_loop_usec)); | |
207 | } | |
208 | ||
209 | b->use_memfd = 1; | |
832d16a6 LP |
210 | assert_se(sd_bus_message_new_method_call(b, ":1.1", "/", "benchmark.server", "Exit", &x) >= 0); |
211 | assert_se(sd_bus_message_append(x, "t", csize) >= 0); | |
212 | assert_se(sd_bus_send(b, x, NULL) >= 0); | |
8f155917 | 213 | |
832d16a6 | 214 | sd_bus_unref(b); |
8f155917 LP |
215 | } |
216 | ||
832d16a6 | 217 | int main(int argc, char *argv[]) { |
31175451 KS |
218 | enum { |
219 | MODE_BISECT, | |
220 | MODE_CHART, | |
221 | } mode = MODE_BISECT; | |
222 | int i; | |
8f155917 | 223 | _cleanup_free_ char *bus_name = NULL, *address = NULL; |
832d16a6 LP |
224 | _cleanup_close_ int bus_ref = -1; |
225 | cpu_set_t cpuset; | |
226 | size_t result; | |
8f155917 | 227 | sd_bus *b; |
8f155917 | 228 | pid_t pid; |
832d16a6 LP |
229 | int r; |
230 | ||
31175451 KS |
231 | for (i = 1; i < argc; i++) { |
232 | if (streq(argv[i], "chart")) { | |
233 | mode = MODE_CHART; | |
234 | continue; | |
235 | } | |
236 | ||
237 | assert_se(parse_sec(argv[i], &arg_loop_usec) >= 0); | |
238 | } | |
061b2c43 LP |
239 | |
240 | assert_se(arg_loop_usec > 0); | |
241 | ||
8f155917 LP |
242 | bus_ref = bus_kernel_create("deine-mutter", &bus_name); |
243 | if (bus_ref == -ENOENT) | |
244 | exit(EXIT_TEST_SKIP); | |
245 | ||
246 | assert_se(bus_ref >= 0); | |
247 | ||
248 | address = strappend("kernel:path=", bus_name); | |
249 | assert_se(address); | |
250 | ||
251 | r = sd_bus_new(&b); | |
252 | assert_se(r >= 0); | |
253 | ||
8f155917 LP |
254 | r = sd_bus_set_address(b, address); |
255 | assert_se(r >= 0); | |
256 | ||
257 | r = sd_bus_start(b); | |
258 | assert_se(r >= 0); | |
259 | ||
832d16a6 LP |
260 | sync(); |
261 | setpriority(PRIO_PROCESS, 0, -19); | |
262 | ||
8f155917 LP |
263 | pid = fork(); |
264 | assert_se(pid >= 0); | |
265 | ||
266 | if (pid == 0) { | |
832d16a6 LP |
267 | CPU_ZERO(&cpuset); |
268 | CPU_SET(0, &cpuset); | |
269 | pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t), &cpuset); | |
270 | ||
8f155917 LP |
271 | close_nointr_nofail(bus_ref); |
272 | sd_bus_unref(b); | |
273 | ||
31175451 KS |
274 | switch (mode) { |
275 | case MODE_BISECT: | |
276 | client_bisect(address); | |
277 | break; | |
278 | ||
279 | case MODE_CHART: | |
280 | client_chart(address); | |
281 | break; | |
282 | } | |
283 | ||
8f155917 LP |
284 | _exit(0); |
285 | } | |
286 | ||
832d16a6 LP |
287 | CPU_ZERO(&cpuset); |
288 | CPU_SET(1, &cpuset); | |
289 | pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t), &cpuset); | |
8f155917 | 290 | |
832d16a6 | 291 | server(b, &result); |
8f155917 | 292 | |
31175451 KS |
293 | if (mode == MODE_BISECT) |
294 | printf("Copying/memfd are equally fast at %zu bytes\n", result); | |
8f155917 | 295 | |
832d16a6 | 296 | assert_se(waitpid(pid, NULL, 0) == pid); |
8f155917 | 297 | |
832d16a6 | 298 | sd_bus_unref(b); |
8f155917 LP |
299 | |
300 | return 0; | |
301 | } |