3 /* amok_bandwidth - Bandwidth tests facilities */
5 /* Copyright (c) 2003-6 Martin Quinson. */
6 /* Copyright (c) 2006 Ahmed Harbaoui. */
7 /* All rights reserved. */
9 /* This program is free software; you can redistribute it and/or modify it
10 * under the terms of the license (GNU LGPL) which comes with this package. */
13 #include "amok/Bandwidth/bandwidth_private.h"
14 #include "gras/messages.h"
16 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(bw,amok,"Bandwidth testing");
19 /******************************
20 * Stuff global to the module *
21 ******************************/
23 static short _amok_bw_initialized = 0;
25 /** @brief module initialization; all participating nodes must run this */
26 void amok_bw_init(void) {
30 if (! _amok_bw_initialized) {
38 _amok_bw_initialized++;
41 /** @brief module finalization */
42 void amok_bw_exit(void) {
43 if (! _amok_bw_initialized)
49 _amok_bw_initialized--;
52 /* ***************************************************************************
54 * ***************************************************************************/
55 static int amok_bw_cb_bw_handshake(gras_msg_cb_ctx_t ctx, void *payload);
56 static int amok_bw_cb_bw_request(gras_msg_cb_ctx_t ctx, void *payload);
58 void amok_bw_bw_init() {
59 gras_datadesc_type_t bw_request_desc, bw_res_desc;
61 /* Build the Bandwidth datatype descriptions */
62 bw_request_desc = gras_datadesc_struct("s_bw_request_t");
63 gras_datadesc_struct_append(bw_request_desc,"host",
64 gras_datadesc_by_name("s_xbt_host_t"));
65 gras_datadesc_struct_append(bw_request_desc,"buf_size",
66 gras_datadesc_by_name("unsigned long int"));
67 gras_datadesc_struct_append(bw_request_desc,"exp_size",
68 gras_datadesc_by_name("unsigned long int"));
69 gras_datadesc_struct_append(bw_request_desc,"msg_size",
70 gras_datadesc_by_name("unsigned long int"));
71 gras_datadesc_struct_close(bw_request_desc);
72 bw_request_desc = gras_datadesc_ref("bw_request_t",bw_request_desc);
74 bw_res_desc = gras_datadesc_struct("s_bw_res_t");
75 gras_datadesc_struct_append(bw_res_desc,"timestamp",gras_datadesc_by_name("unsigned int"));
76 gras_datadesc_struct_append(bw_res_desc,"seconds",gras_datadesc_by_name("double"));
77 gras_datadesc_struct_append(bw_res_desc,"bw",gras_datadesc_by_name("double"));
78 gras_datadesc_struct_close(bw_res_desc);
79 bw_res_desc = gras_datadesc_ref("bw_res_t",bw_res_desc);
81 gras_msgtype_declare_rpc("BW handshake",bw_request_desc,bw_request_desc);
82 gras_msgtype_declare_rpc("BW request", bw_request_desc,bw_res_desc);
84 void amok_bw_bw_join() {
85 gras_cb_register(gras_msgtype_by_name("BW request"),
86 &amok_bw_cb_bw_request);
87 gras_cb_register(gras_msgtype_by_name("BW handshake"),
88 &amok_bw_cb_bw_handshake);
90 void amok_bw_bw_leave() {
91 gras_cb_unregister(gras_msgtype_by_name("BW request"),
92 &amok_bw_cb_bw_request);
93 gras_cb_unregister(gras_msgtype_by_name("BW handshake"),
94 &amok_bw_cb_bw_handshake);
98 * \brief bandwidth measurement between localhost and \e peer
100 * \arg peer: A (regular) socket at which the the host with which we should conduct the experiment can be contacted
101 * \arg buf_size: Size of the socket buffer
102 * \arg exp_size: Total size of data sent across the network
103 * \arg msg_size: Size of each message sent. Ie, (\e expSize % \e msgSize) messages will be sent.
104 * \arg sec: where the result (in seconds) should be stored.
105 * \arg bw: observed Bandwidth (in byte/s)
107 * Conduct a bandwidth test from the local process to the given peer.
108 * This call is blocking until the end of the experiment.
110 * Results are reported in last args, and sizes are in byte.
112 void amok_bw_test(gras_socket_t peer,
113 unsigned long int buf_size,
114 unsigned long int exp_size,
115 unsigned long int msg_size,
116 /*OUT*/ double *sec, double *bw) {
118 /* Measurement sockets for the experiments */
119 gras_socket_t measMasterIn=NULL,measIn,measOut=NULL;
121 bw_request_t request,request_ack;
124 for (port = 5000; port < 10000 && measMasterIn == NULL; port++) {
126 measMasterIn = gras_socket_server_ext(++port,buf_size,1);
129 if (port == 10000 -1) {
130 RETHROW0("Error caught while opening a measurement socket: %s");
137 request=xbt_new0(s_bw_request_t,1);
138 request->buf_size=buf_size;
139 request->exp_size=exp_size;
140 request->msg_size=msg_size;
141 request->host.name = NULL;
142 request->host.port = gras_socket_my_port(measMasterIn);
143 VERB5("Handshaking with %s:%d to connect it back on my %d (expsize=%ld byte= %ld b)",
144 gras_socket_peer_name(peer),gras_socket_peer_port(peer), request->host.port,
145 buf_size,request->buf_size);
148 gras_msg_rpccall(peer,60,
149 gras_msgtype_by_name("BW handshake"),&request, &request_ack);
151 RETHROW0("Error encountered while sending the BW request: %s");
153 measIn = gras_socket_meas_accept(measMasterIn);
156 measOut=gras_socket_client_ext(gras_socket_peer_name(peer),
157 request_ack->host.port,
158 request->buf_size,1);
160 RETHROW2("Error encountered while opening the measurement socket to %s:%d for BW test: %s",
161 gras_socket_peer_name(peer),request_ack->host.port);
163 DEBUG1("Got ACK; conduct the experiment (msg_size=%ld)",request->msg_size);
167 gras_socket_meas_send(measOut,120,request->exp_size,request->msg_size);
168 gras_socket_meas_recv(measIn,120,1,1);
170 gras_socket_close(measOut);
171 gras_socket_close(measMasterIn);
172 gras_socket_close(measIn);
173 RETHROW0("Unable to conduct the experiment: %s");
176 *sec = gras_os_time() - *sec;
177 *bw = ((double)exp_size) / *sec;
181 if (measIn != measMasterIn)
182 gras_socket_close(measIn);
183 gras_socket_close(measMasterIn);
184 gras_socket_close(measOut);
188 /* Callback to the "BW handshake" message:
189 opens a server measurement socket,
190 indicate its port in an "BW handshaked" message,
191 receive the corresponding data on the measurement socket,
192 close the measurment socket
196 int amok_bw_cb_bw_handshake(gras_msg_cb_ctx_t ctx,
198 gras_socket_t expeditor = gras_msg_cb_ctx_from(ctx);
199 gras_socket_t measMasterIn=NULL,measIn=NULL,measOut=NULL;
200 bw_request_t request=*(bw_request_t*)payload;
205 VERB5("Handshaked to connect to %s:%d (sizes: buf=%lu exp=%lu msg=%lu)",
206 gras_socket_peer_name(expeditor),request->host.port,
207 request->buf_size,request->exp_size,request->msg_size);
209 /* Build our answer */
210 answer = xbt_new0(s_bw_request_t,1);
212 for (port = 6000; port <= 10000 && measMasterIn == NULL; port++) {
214 measMasterIn = gras_socket_server_ext(port,request->buf_size,1);
220 /* FIXME: tell error to remote */
221 RETHROW0("Error encountered while opening a measurement server socket: %s");
225 answer->buf_size=request->buf_size;
226 answer->exp_size=request->exp_size;
227 answer->msg_size=request->msg_size;
228 answer->host.port=gras_socket_my_port(measMasterIn);
231 gras_msg_rpcreturn(60,ctx,&answer);
233 gras_socket_close(measMasterIn);
234 /* FIXME: tell error to remote */
235 RETHROW0("Error encountered while sending the answer: %s");
239 /* Don't connect asap to leave time to other side to enter the accept() */
241 measOut = gras_socket_client_ext(gras_socket_peer_name(expeditor),
243 request->buf_size,1);
245 RETHROW2("Error encountered while opening a measurement socket back to %s:%d : %s",
246 gras_socket_peer_name(expeditor),request->host.port);
247 /* FIXME: tell error to remote */
251 measIn = gras_socket_meas_accept(measMasterIn);
252 DEBUG4("BW handshake answered. buf_size=%lu exp_size=%lu msg_size=%lu port=%d",
253 answer->buf_size,answer->exp_size,answer->msg_size,answer->host.port);
255 gras_socket_meas_recv(measIn, 120,request->exp_size,request->msg_size);
256 gras_socket_meas_send(measOut,120,1,1);
258 gras_socket_close(measMasterIn);
259 gras_socket_close(measIn);
260 gras_socket_close(measOut);
261 /* FIXME: tell error to remote ? */
262 RETHROW0("Error encountered while receiving the experiment: %s");
265 if (measIn != measMasterIn)
266 gras_socket_close(measMasterIn);
267 gras_socket_close(measIn);
268 gras_socket_close(measOut);
271 DEBUG0("BW experiment done.");
276 * \brief request a bandwidth measurement between two remote hosts
278 * \arg from_name: Name of the first host
279 * \arg from_port: port on which the first process is listening for messages
280 * \arg to_name: Name of the second host
281 * \arg to_port: port on which the second process is listening (for messages, do not
282 * give a measurement socket here. The needed measurement sockets will be created
283 * automatically and negociated between the peers)
284 * \arg buf_size: Size of the socket buffer
285 * \arg exp_size: Total size of data sent across the network
286 * \arg msg_size: Size of each message sent. (\e expSize % \e msgSize) messages will be sent.
287 * \arg sec: where the result (in seconds) should be stored.
288 * \arg bw: observed Bandwidth (in byte/s)
290 * Conduct a bandwidth test from the process from_host:from_port to to_host:to_port.
291 * This call is blocking until the end of the experiment.
293 * Results are reported in last args, and sizes are in bytes.
295 void amok_bw_request(const char* from_name,unsigned int from_port,
296 const char* to_name,unsigned int to_port,
297 unsigned long int buf_size,
298 unsigned long int exp_size,
299 unsigned long int msg_size,
300 /*OUT*/ double *sec, double*bw) {
304 bw_request_t request;
307 request=xbt_new0(s_bw_request_t,1);
308 request->buf_size=buf_size;
309 request->exp_size=exp_size;
310 request->msg_size=msg_size;
312 request->host.name = (char*)to_name;
313 request->host.port = to_port;
315 sock = gras_socket_client(from_name,from_port);
316 gras_msg_rpccall(sock,240,gras_msgtype_by_name("BW request"),&request, &result);
321 VERB6("BW test between %s:%d and %s:%d took %f sec, achieving %f kb/s",
322 from_name,from_port, to_name,to_port,
323 *sec,((double)*bw)/1024.0);
325 gras_socket_close(sock);
330 int amok_bw_cb_bw_request(gras_msg_cb_ctx_t ctx,
333 /* specification of the test to run, and our answer */
334 bw_request_t request = *(bw_request_t*)payload;
335 bw_res_t result = xbt_new0(s_bw_res_t,1);
338 peer = gras_socket_client(request->host.name,request->host.port);
340 request->buf_size,request->exp_size,request->msg_size,
341 &(result->sec),&(result->bw));
343 gras_msg_rpcreturn(240,ctx,&result);
346 gras_socket_close(peer);
353 double * amok_bw_matrix(xbt_dynar_t hosts,
354 int buf_size_bw, int exp_size_bw, int msg_size_bw) {
356 /* construct of matrixs for bandwith and Latency */
359 int i,j,len=xbt_dynar_length(hosts);
361 double *matrix_res = xbt_new0(double, len*len);
364 xbt_dynar_foreach (hosts,i,h1) {
365 xbt_dynar_foreach (hosts,j,h2) {
367 /* Mesurements of Bandwidth */
368 amok_bw_request(h1->name,h1->port,h2->name,h2->port,
369 buf_size_bw,exp_size_bw,msg_size_bw,&sec,&matrix_res[i*len + j]);