3 /* saturate - link saturation demo of AMOK features */
5 /* Copyright (c) 2003-6 Martin Quinson. All rights reserved. */
7 /* This program is free software; you can redistribute it and/or modify it
8 * under the terms of the license (GNU LGPL) which comes with this package. */
17 #include "amok/bandwidth.h"
18 #include "amok/peermanagement.h"
20 XBT_LOG_NEW_DEFAULT_CATEGORY(saturate,"Messages specific to this example");
22 /* **********************************************************************
24 * **********************************************************************/
26 /* Function prototypes */
27 int sensor (int argc,char *argv[]);
29 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) {
68 double sec, bw, sec_sat,bw_sat;
70 gras_os_sleep(5.0); /* wait for the sensors to show up */
71 /* Test BW without saturation */
72 amok_bw_request(bw1,4000,bw2,4000,
73 buf_size,msg_size,msg_amount,min_duration,&sec,&bw);
74 INFO4("BW(%s,%s) => %f sec, achieving %f Mb/s",
75 bw1, bw2, sec, (bw/1024.0/1024.0));
78 /* Test BW with saturation */
79 amok_bw_saturate_start(sat1,4000,sat2,4000, sat_size,60);
80 gras_os_sleep(1.0); /* let it start */
82 amok_bw_request(bw1,4000,bw2,4000,
83 buf_size,msg_size,msg_amount,min_duration,&sec_sat,&bw_sat);
84 INFO6("BW(%s,%s//%s,%s) => %f sec, achieving %f Mb/s",
85 bw1,bw2,sat1,sat2,sec,bw/1024.0/1024.0);
87 amok_bw_saturate_stop(sat1,4000,NULL,NULL);
89 if (bw_sat/bw < 0.7) {
90 INFO0("THERE IS SOME INTERFERENCE !!!");
92 if (bw/bw_sat < 0.7) {
93 INFO0("THERE IS SOME INTERFERENCE (and I'm an idiot) !!!");
98 static void kill_buddy(char *name,int port){
99 gras_socket_t sock=gras_socket_client(name,port);
100 gras_msg_send(sock,"kill",NULL);
101 gras_socket_close(sock);
103 static void kill_buddy_dynar(void *b) {
104 xbt_peer_t buddy=*(xbt_peer_t*)b;
105 kill_buddy(buddy->name,buddy->port);
108 static void free_peer(void *d){
109 xbt_peer_t h=*(xbt_peer_t*)d;
114 static void simple_saturation(int argc, char*argv[]) {
117 /* where are the sensors */
124 peers=amok_pm_group_new("saturate");
126 gras_msg_handleall(5);
128 /* Stop all sensors but two of them */
129 while (xbt_dynar_length(peers) > 2) {
130 xbt_dynar_pop(peers,&h1);
131 amok_pm_kill_hp(h1->name,h1->port);
136 xbt_dynar_get_cpy(peers,0,&h1);
137 xbt_dynar_get_cpy(peers,1,&h2);
139 /* Start saturation */
140 INFO4("Start saturation between %s:%d and %s:%d",
144 amok_bw_saturate_start(h1->name,h1->port,
146 0, /* Be a nice boy, compute msg_size yourself */
147 30 /* 5 sec timeout */);
149 /* Stop it after a while */
150 INFO0("Have a rest");
153 INFO0("Stop the saturation");
154 amok_bw_saturate_stop(h1->name,h1->port, &duration,&bw);
156 INFO0("Ooops, stoping the saturation raised an exception");
159 INFO2("Saturation took %.2fsec, achieving %fb/s",duration,bw);
161 /* Game is over, friends */
162 amok_pm_group_shutdown ("saturate");
164 /********************************************************************************************/
165 static void full_fledged_saturation(int argc, char*argv[]) {
167 double time1=5.0,bw1=5.0; // 0.5 for test
169 double begin_simulated;
172 /* where are the sensors */
181 unsigned int i,j,k,l;
182 xbt_peer_t h1,h2,h3,h4;
185 peers=amok_pm_group_new("saturate");
191 nb_peers = xbt_dynar_length(peers);
193 INFO0("Let's go for the bw_matrix");
195 /* Do the test without saturation */
197 begin_simulated=gras_os_time();
199 bw=amok_bw_matrix(peers,buf_size,msg_size,msg_amount,min_duration);
201 INFO2("Did all BW tests in %ld sec (%.2f simulated(?) sec)",
202 (long int) (time(NULL)-begin),gras_os_time()-begin_simulated);
204 /* Do the test with saturation */
205 bw_sat=xbt_new(double,nb_peers*nb_peers);
206 xbt_dynar_foreach(peers,i,h1) {
207 xbt_dynar_foreach(peers,j,h2) {
211 amok_bw_saturate_start(h1->name,h1->port,
213 0, /* Be nice, compute msg_size yourself */
216 RETHROW0("Cannot ask peers to saturate the link: %s");
221 begin_simulated=gras_os_time();
222 xbt_dynar_foreach(peers,k,h3) {
223 if (i==k || j==k) continue;
225 xbt_dynar_foreach(peers,l,h4) {
227 if (i==l || j==l || k==l) continue;
229 VERB4("TEST %s %s // %s %s",
230 h1->name,h2->name,h3->name,h4->name);
231 amok_bw_request(h3->name,h3->port, h4->name,h4->port,
232 buf_size,msg_size,msg_amount,min_duration,
233 NULL,&(bw_sat[k*nb_peers + l]));
235 ratio=bw_sat[k*nb_peers + l] / bw[k*nb_peers + l];
236 INFO8("SATURATED BW XP(%s %s // %s %s) => %f (%f vs %f)%s",
237 h1->name,h2->name,h3->name,h4->name,
239 bw[k*nb_peers + l] , bw_sat[k*nb_peers + l],
240 ratio < 0.7 ? " THERE IS SOME INTERFERENCE !!!": "");
243 amok_bw_saturate_stop(h1->name,h1->port,&time1,&bw1);
245 INFO2("Did an iteration on saturation pair in %ld sec (%.2f simulated sec)",
246 (long int) (time(NULL)-begin), gras_os_time()-begin_simulated);
247 INFO2("the duration of the experiment >>>>> %.3f sec (%.3f bandwidth)",time1,bw1);
252 /* Game is over, friends */
253 amok_pm_group_shutdown ("saturate");
257 int maestro(int argc,char *argv[]) {
259 gras_init(&argc,argv);
263 gras_socket_server(atoi(argv[1]));
265 simple_saturation(argc,argv);
266 //full_fledged_saturation(argc, argv);