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,
20 "Messages specific to this example");
22 /* **********************************************************************
24 * **********************************************************************/
26 /* Function prototypes */
27 int sensor(int argc, char *argv[]);
29 int sensor(int argc, char *argv[])
34 gras_init(&argc, argv);
38 mysock = gras_socket_server_range(3000, 9999, 0, 0);
39 INFO1("Sensor starting (on port %d)", gras_os_myport());
40 gras_os_sleep(2); /* let the master get ready */
41 master = gras_socket_client_from_string(argv[1]);
43 amok_pm_group_join(master, "saturate");
44 amok_pm_mainloop(600);
46 gras_socket_close(mysock);
47 gras_socket_close(master);
52 /* **********************************************************************
54 * **********************************************************************/
56 /* Function prototypes */
57 int maestro(int argc, char *argv[]);
60 const int buf_size = 0;
61 const int msg_size = 50 * 1024;
62 const int msg_amount = 2;
63 const int sat_size = 1024 * 1024 * 10;
64 const double min_duration = 1;
66 static double XP(const char *bw1, const char *bw2,
67 const char *sat1, const char *sat2)
70 double sec, bw, sec_sat, bw_sat;
72 gras_os_sleep(5.0); /* wait for the sensors to show up */
73 /* Test BW without saturation */
74 amok_bw_request(bw1, 4000, bw2, 4000,
75 buf_size, msg_size, msg_amount, min_duration, &sec, &bw);
76 INFO4("BW(%s,%s) => %f sec, achieving %f Mb/s",
77 bw1, bw2, sec, (bw / 1024.0 / 1024.0));
80 /* Test BW with saturation */
81 amok_bw_saturate_start(sat1, 4000, sat2, 4000, sat_size, 60);
82 gras_os_sleep(1.0); /* let it start */
84 amok_bw_request(bw1, 4000, bw2, 4000,
85 buf_size, msg_size, msg_amount, min_duration, &sec_sat,
87 INFO6("BW(%s,%s//%s,%s) => %f sec, achieving %f Mb/s", bw1, bw2, sat1,
88 sat2, sec, bw / 1024.0 / 1024.0);
90 amok_bw_saturate_stop(sat1, 4000, NULL, NULL);
92 if (bw_sat / bw < 0.7) {
93 INFO0("THERE IS SOME INTERFERENCE !!!");
95 if (bw / bw_sat < 0.7) {
96 INFO0("THERE IS SOME INTERFERENCE (and I'm an idiot) !!!");
101 static void kill_buddy(char *name, int port)
103 gras_socket_t sock = gras_socket_client(name, port);
104 gras_msg_send(sock, "kill", NULL);
105 gras_socket_close(sock);
108 static void kill_buddy_dynar(void *b)
110 xbt_peer_t buddy = *(xbt_peer_t *) b;
111 kill_buddy(buddy->name, buddy->port);
114 static void free_peer(void *d)
116 xbt_peer_t h = *(xbt_peer_t *) d;
121 static void simple_saturation(int argc, char *argv[])
125 /* where are the sensors */
132 peers = amok_pm_group_new("saturate");
134 gras_msg_handleall(5);
136 /* Stop all sensors but two of them */
137 while (xbt_dynar_length(peers) > 2) {
138 xbt_dynar_pop(peers, &h1);
139 amok_pm_kill_hp(h1->name, h1->port);
144 xbt_dynar_get_cpy(peers, 0, &h1);
145 xbt_dynar_get_cpy(peers, 1, &h2);
147 /* Start saturation */
148 INFO4("Start saturation between %s:%d and %s:%d",
149 h1->name, h1->port, h2->name, h2->port);
151 amok_bw_saturate_start(h1->name, h1->port, h2->name, h2->port, 0, /* Be a nice boy, compute msg_size yourself */
152 30 /* 5 sec timeout */ );
154 /* Stop it after a while */
155 INFO0("Have a rest");
158 INFO0("Stop the saturation");
159 amok_bw_saturate_stop(h1->name, h1->port, &duration, &bw);
162 INFO0("Ooops, stoping the saturation raised an exception");
165 INFO2("Saturation took %.2fsec, achieving %fb/s", duration, bw);
167 /* Game is over, friends */
168 amok_pm_group_shutdown("saturate");
171 /********************************************************************************************/
172 static void full_fledged_saturation(int argc, char *argv[])
175 double time1 = 5.0, bw1 = 5.0; // 0.5 for test
177 double begin_simulated;
180 /* where are the sensors */
189 unsigned int i, j, k, l;
190 xbt_peer_t h1, h2, h3, h4;
193 peers = amok_pm_group_new("saturate");
199 nb_peers = xbt_dynar_length(peers);
201 INFO0("Let's go for the bw_matrix");
203 /* Do the test without saturation */
205 begin_simulated = gras_os_time();
207 bw = amok_bw_matrix(peers, buf_size, msg_size, msg_amount, min_duration);
209 INFO2("Did all BW tests in %ld sec (%.2f simulated(?) sec)",
210 (long int) (time(NULL) - begin), gras_os_time() - begin_simulated);
212 /* Do the test with saturation */
213 bw_sat = xbt_new(double, nb_peers * nb_peers);
214 xbt_dynar_foreach(peers, i, h1) {
215 xbt_dynar_foreach(peers, j, h2) {
220 amok_bw_saturate_start(h1->name, h1->port, h2->name, h2->port, 0, /* Be nice, compute msg_size yourself */
221 0 /* no timeout */ );
224 RETHROW0("Cannot ask peers to saturate the link: %s");
229 begin_simulated = gras_os_time();
230 xbt_dynar_foreach(peers, k, h3) {
231 if (i == k || j == k)
234 xbt_dynar_foreach(peers, l, h4) {
236 if (i == l || j == l || k == l)
239 VERB4("TEST %s %s // %s %s",
240 h1->name, h2->name, h3->name, h4->name);
241 amok_bw_request(h3->name, h3->port, h4->name, h4->port,
242 buf_size, msg_size, msg_amount, min_duration,
243 NULL, &(bw_sat[k * nb_peers + l]));
245 ratio = bw_sat[k * nb_peers + l] / bw[k * nb_peers + l];
246 INFO8("SATURATED BW XP(%s %s // %s %s) => %f (%f vs %f)%s",
247 h1->name, h2->name, h3->name, h4->name,
249 bw[k * nb_peers + l], bw_sat[k * nb_peers + l],
250 ratio < 0.7 ? " THERE IS SOME INTERFERENCE !!!" : "");
253 amok_bw_saturate_stop(h1->name, h1->port, &time1, &bw1);
256 ("Did an iteration on saturation pair in %ld sec (%.2f simulated sec)",
257 (long int) (time(NULL) - begin),
258 gras_os_time() - begin_simulated);
260 ("the duration of the experiment >>>>> %.3f sec (%.3f bandwidth)",
266 /* Game is over, friends */
267 amok_pm_group_shutdown("saturate");
271 int maestro(int argc, char *argv[])
274 gras_init(&argc, argv);
278 gras_socket_server(atoi(argv[1]));
280 simple_saturation(argc, argv);
281 //full_fledged_saturation(argc, argv);