1 /* saturate - link saturation demo of AMOK features */
3 /* Copyright (c) 2005, 2006, 2007, 2008, 2009, 2010. The SimGrid Team.
4 * All rights reserved. */
6 /* This program is free software; you can redistribute it and/or modify it
7 * under the terms of the license (GNU LGPL) which comes with this package. */
16 #include "amok/bandwidth.h"
17 #include "amok/peermanagement.h"
19 XBT_LOG_NEW_DEFAULT_CATEGORY(saturate, "Messages specific to this example");
21 /* **********************************************************************
23 * **********************************************************************/
25 /* Function prototypes */
26 int sensor(int argc, char *argv[]);
28 int sensor(int argc, char *argv[])
33 gras_init(&argc, argv);
37 mysock = gras_socket_server_range(3000, 9999, 0, 0);
38 INFO1("Sensor starting (on port %d)", gras_os_myport());
39 gras_os_sleep(2); /* let the master get ready */
40 master = gras_socket_client_from_string(argv[1]);
42 amok_pm_group_join(master, "saturate");
43 amok_pm_mainloop(600);
45 gras_socket_close(mysock);
46 gras_socket_close(master);
51 /* **********************************************************************
53 * **********************************************************************/
55 /* Function prototypes */
56 int maestro(int argc, char *argv[]);
59 const int buf_size = 0;
60 const int msg_size = 50 * 1024;
61 const int msg_amount = 2;
62 const int sat_size = 1024 * 1024 * 10;
63 const double min_duration = 1;
65 static double XP(const char *bw1, const char *bw2,
66 const char *sat1, const char *sat2)
69 double sec, bw, sec_sat, bw_sat;
71 gras_os_sleep(5.0); /* wait for the sensors to show up */
72 /* Test BW without saturation */
73 amok_bw_request(bw1, 4000, bw2, 4000,
74 buf_size, msg_size, msg_amount, min_duration, &sec, &bw);
75 INFO4("BW(%s,%s) => %f sec, achieving %f Mb/s",
76 bw1, bw2, sec, (bw / 1024.0 / 1024.0));
79 /* Test BW with saturation */
80 amok_bw_saturate_start(sat1, 4000, sat2, 4000, sat_size, 60);
81 gras_os_sleep(1.0); /* let it start */
83 amok_bw_request(bw1, 4000, bw2, 4000,
84 buf_size, msg_size, msg_amount, min_duration, &sec_sat,
86 INFO6("BW(%s,%s//%s,%s) => %f sec, achieving %f Mb/s", bw1, bw2, sat1, sat2,
87 sec, bw / 1024.0 / 1024.0);
89 amok_bw_saturate_stop(sat1, 4000, NULL, NULL);
91 if (bw_sat / bw < 0.7) {
92 INFO0("THERE IS SOME INTERFERENCE !!!");
94 if (bw / bw_sat < 0.7) {
95 INFO0("THERE IS SOME INTERFERENCE (and I'm an idiot) !!!");
100 static void kill_buddy(char *name, int port)
102 gras_socket_t sock = gras_socket_client(name, port);
103 gras_msg_send(sock, "kill", NULL);
104 gras_socket_close(sock);
107 static void kill_buddy_dynar(void *b)
109 xbt_peer_t buddy = *(xbt_peer_t *) b;
110 kill_buddy(buddy->name, buddy->port);
113 static void free_peer(void *d)
115 xbt_peer_t h = *(xbt_peer_t *) d;
120 static void simple_saturation(int argc, char *argv[])
124 /* where are the sensors */
131 peers = amok_pm_group_new("saturate");
133 gras_msg_handleall(5);
135 /* Stop all sensors but two of them */
136 while (xbt_dynar_length(peers) > 2) {
137 xbt_dynar_pop(peers, &h1);
138 amok_pm_kill_hp(h1->name, h1->port);
143 xbt_dynar_get_cpy(peers, 0, &h1);
144 xbt_dynar_get_cpy(peers, 1, &h2);
146 /* Start saturation */
147 INFO4("Start saturation between %s:%d and %s:%d",
148 h1->name, h1->port, h2->name, h2->port);
150 amok_bw_saturate_start(h1->name, h1->port, h2->name, h2->port, 0, /* Be a nice boy, compute msg_size yourself */
151 30 /* 5 sec timeout */ );
153 /* Stop it after a while */
154 INFO0("Have a rest");
157 INFO0("Stop the saturation");
158 amok_bw_saturate_stop(h1->name, h1->port, &duration, &bw);
161 INFO0("Ooops, stoping the saturation raised an exception");
164 INFO2("Saturation took %.2fsec, achieving %fb/s", duration, bw);
166 /* Game is over, friends */
167 amok_pm_group_shutdown("saturate");
170 /********************************************************************************************/
171 static void full_fledged_saturation(int argc, char *argv[])
174 double time1 = 5.0, bw1 = 5.0; // 0.5 for test
176 double begin_simulated;
179 /* where are the sensors */
188 unsigned int i, j, k, l;
189 xbt_peer_t h1, h2, h3, h4;
192 peers = amok_pm_group_new("saturate");
198 nb_peers = xbt_dynar_length(peers);
200 INFO0("Let's go for the bw_matrix");
202 /* Do the test without saturation */
204 begin_simulated = gras_os_time();
206 bw = amok_bw_matrix(peers, buf_size, msg_size, msg_amount, min_duration);
208 INFO2("Did all BW tests in %ld sec (%.2f simulated(?) sec)",
209 (long int) (time(NULL) - begin), gras_os_time() - begin_simulated);
211 /* Do the test with saturation */
212 bw_sat = xbt_new(double, nb_peers * nb_peers);
213 xbt_dynar_foreach(peers, i, h1) {
214 xbt_dynar_foreach(peers, j, h2) {
219 amok_bw_saturate_start(h1->name, h1->port, h2->name, h2->port, 0, /* Be nice, compute msg_size yourself */
220 0 /* no timeout */ );
223 RETHROW0("Cannot ask peers to saturate the link: %s");
228 begin_simulated = gras_os_time();
229 xbt_dynar_foreach(peers, k, h3) {
230 if (i == k || j == k)
233 xbt_dynar_foreach(peers, l, h4) {
235 if (i == l || j == l || k == l)
238 VERB4("TEST %s %s // %s %s",
239 h1->name, h2->name, h3->name, h4->name);
240 amok_bw_request(h3->name, h3->port, h4->name, h4->port,
241 buf_size, msg_size, msg_amount, min_duration,
242 NULL, &(bw_sat[k * nb_peers + l]));
244 ratio = bw_sat[k * nb_peers + l] / bw[k * nb_peers + l];
245 INFO8("SATURATED BW XP(%s %s // %s %s) => %f (%f vs %f)%s",
246 h1->name, h2->name, h3->name, h4->name,
248 bw[k * nb_peers + l], bw_sat[k * nb_peers + l],
249 ratio < 0.7 ? " THERE IS SOME INTERFERENCE !!!" : "");
252 amok_bw_saturate_stop(h1->name, h1->port, &time1, &bw1);
255 ("Did an iteration on saturation pair in %ld sec (%.2f simulated sec)",
256 (long int) (time(NULL) - begin), gras_os_time() - begin_simulated);
257 INFO2("the duration of the experiment >>>>> %.3f sec (%.3f bandwidth)",
263 /* Game is over, friends */
264 amok_pm_group_shutdown("saturate");
268 int maestro(int argc, char *argv[])
271 gras_init(&argc, argv);
275 gras_socket_server(atoi(argv[1]));
277 simple_saturation(argc, argv);
278 //full_fledged_saturation(argc, argv);