3 /* amok_bandwidth - Bandwidth tests facilities */
5 /* Copyright (c) 2003-5 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. */
11 #include "amok/Bandwidth/bandwidth_private.h"
12 #include "gras/messages.h"
14 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(bw,amok,"Bandwidth testing");
16 static short _amok_bw_initialized = 0;
18 /** @brief module initialization; all participating nodes must run this */
19 void amok_bw_init(void) {
20 gras_datadesc_type_t bw_request_desc, bw_res_desc, sat_request_desc;
24 if (! _amok_bw_initialized) {
26 /* Build the datatype descriptions */
27 bw_request_desc = gras_datadesc_struct("s_bw_request_t");
28 gras_datadesc_struct_append(bw_request_desc,"host",
29 gras_datadesc_by_name("xbt_host_t"));
30 gras_datadesc_struct_append(bw_request_desc,"buf_size",
31 gras_datadesc_by_name("unsigned long int"));
32 gras_datadesc_struct_append(bw_request_desc,"exp_size",
33 gras_datadesc_by_name("unsigned long int"));
34 gras_datadesc_struct_append(bw_request_desc,"msg_size",
35 gras_datadesc_by_name("unsigned long int"));
36 gras_datadesc_struct_close(bw_request_desc);
37 bw_request_desc = gras_datadesc_ref("bw_request_t",bw_request_desc);
39 bw_res_desc = gras_datadesc_struct("s_bw_res_t");
40 gras_datadesc_struct_append(bw_res_desc,"timestamp",gras_datadesc_by_name("unsigned int"));
41 gras_datadesc_struct_append(bw_res_desc,"seconds",gras_datadesc_by_name("double"));
42 gras_datadesc_struct_append(bw_res_desc,"bw",gras_datadesc_by_name("double"));
43 gras_datadesc_struct_close(bw_res_desc);
44 bw_res_desc = gras_datadesc_ref("bw_res_t",bw_res_desc);
46 sat_request_desc = gras_datadesc_struct("s_sat_request_desc_t");
47 gras_datadesc_struct_append(sat_request_desc,"host",gras_datadesc_by_name("xbt_host_t"));
48 gras_datadesc_struct_append(sat_request_desc,"msg_size",gras_datadesc_by_name("unsigned int"));
49 gras_datadesc_struct_append(sat_request_desc,"timeout",gras_datadesc_by_name("unsigned int"));
50 gras_datadesc_struct_close(sat_request_desc);
51 sat_request_desc = gras_datadesc_ref("sat_request_t",sat_request_desc);
53 /* Register the bandwidth messages */
54 gras_msgtype_declare("BW handshake", bw_request_desc);
55 gras_msgtype_declare("BW handshake ACK", bw_request_desc);
56 gras_msgtype_declare("BW request", bw_request_desc);
57 gras_msgtype_declare("BW result", bw_res_desc);
59 /* Register the saturation messages */
60 gras_msgtype_declare("SAT start", sat_request_desc);
61 gras_msgtype_declare("SAT started", NULL);
62 gras_msgtype_declare("SAT begin", sat_request_desc);
63 gras_msgtype_declare("SAT begun", NULL);
64 gras_msgtype_declare("SAT end", NULL);
65 gras_msgtype_declare("SAT ended", NULL);
66 gras_msgtype_declare("SAT stop", NULL);
67 gras_msgtype_declare("SAT stopped", NULL);
70 /* Register the callbacks */
71 gras_cb_register(gras_msgtype_by_name("BW request"),
72 &amok_bw_cb_bw_request);
73 gras_cb_register(gras_msgtype_by_name("BW handshake"),
74 &amok_bw_cb_bw_handshake);
76 gras_cb_register(gras_msgtype_by_name("SAT start"),
77 &amok_bw_cb_sat_start);
78 gras_cb_register(gras_msgtype_by_name("SAT begin"),
79 &amok_bw_cb_sat_begin);
81 _amok_bw_initialized =1;
84 /** @brief module finalization */
85 void amok_bw_exit(void) {
86 if (! _amok_bw_initialized)
89 gras_cb_unregister(gras_msgtype_by_name("BW request"),
90 &amok_bw_cb_bw_request);
91 gras_cb_unregister(gras_msgtype_by_name("BW handshake"),
92 &amok_bw_cb_bw_handshake);
94 gras_cb_unregister(gras_msgtype_by_name("SAT start"),
95 &amok_bw_cb_sat_start);
96 gras_cb_unregister(gras_msgtype_by_name("SAT begin"),
97 &amok_bw_cb_sat_begin);
99 _amok_bw_initialized = 0;
102 /* ***************************************************************************
104 * ***************************************************************************/
107 * \brief bandwidth measurement between localhost and \e peer
109 * \arg peer: A (regular) socket at which the the host with which we should conduct the experiment can be contacted
110 * \arg buf_size: Size of the socket buffer
111 * \arg exp_size: Total size of data sent across the network
112 * \arg msg_size: Size of each message sent. Ie, (\e expSize % \e msgSize) messages will be sent.
113 * \arg sec: where the result (in seconds) should be stored.
114 * \arg bw: observed Bandwidth (in byte/s)
116 * Conduct a bandwidth test from the local process to the given peer.
117 * This call is blocking until the end of the experiment.
119 * Results are reported in last args, and sizes are in byte.
121 void amok_bw_test(gras_socket_t peer,
122 unsigned long int buf_size,
123 unsigned long int exp_size,
124 unsigned long int msg_size,
125 /*OUT*/ double *sec, double *bw) {
127 /* Measurement sockets for the experiments */
128 gras_socket_t measMasterIn=NULL,measIn,measOut=NULL;
130 bw_request_t request,request_ack;
133 for (port = 5000; port < 10000 && measMasterIn == NULL; port++) {
135 measMasterIn = gras_socket_server_ext(++port,buf_size,1);
138 if (port == 10000 -1) {
139 RETHROW0("Error caught while opening a measurement socket: %s");
146 request=xbt_new0(s_bw_request_t,1);
147 request->buf_size=buf_size;
148 request->exp_size=exp_size;
149 request->msg_size=msg_size;
150 request->host.name = NULL;
151 request->host.port = gras_socket_my_port(measMasterIn);
152 VERB5("Handshaking with %s:%d to connect it back on my %d (expsize=%ld byte= %ld b)",
153 gras_socket_peer_name(peer),gras_socket_peer_port(peer), request->host.port,
154 buf_size,request->buf_size);
157 gras_msg_send(peer,gras_msgtype_by_name("BW handshake"),&request);
159 RETHROW0("Error encountered while sending the BW request: %s");
161 measIn = gras_socket_meas_accept(measMasterIn);
164 gras_msg_wait(60,gras_msgtype_by_name("BW handshake ACK"),NULL,&request_ack);
166 RETHROW0("Error encountered while waiting for the answer to BW request: %s");
169 /* FIXME: What if there is a remote error? */
172 measOut=gras_socket_client_ext(gras_socket_peer_name(peer),
173 request_ack->host.port,
174 request->buf_size,1);
176 RETHROW2("Error encountered while opening the measurement socket to %s:%d for BW test: %s",
177 gras_socket_peer_name(peer),request_ack->host.port);
179 DEBUG1("Got ACK; conduct the experiment (msg_size=%ld)",request->msg_size);
183 gras_socket_meas_send(measOut,120,request->exp_size,request->msg_size);
184 gras_socket_meas_recv(measIn,120,1,1);
186 gras_socket_close(measOut);
187 gras_socket_close(measMasterIn);
188 gras_socket_close(measIn);
189 RETHROW0("Unable to conduct the experiment: %s");
192 *sec = gras_os_time() - *sec;
193 *bw = ((double)exp_size) / *sec;
197 if (measIn != measMasterIn)
198 gras_socket_close(measIn);
199 gras_socket_close(measMasterIn);
200 gras_socket_close(measOut);
204 /* Callback to the "BW handshake" message:
205 opens a server measurement socket,
206 indicate its port in an "BW handshaked" message,
207 receive the corresponding data on the measurement socket,
208 close the measurment socket
212 int amok_bw_cb_bw_handshake(gras_socket_t expeditor,
214 gras_socket_t measMasterIn=NULL,measIn=NULL,measOut=NULL;
215 bw_request_t request=*(bw_request_t*)payload;
220 VERB5("Handshaked to connect to %s:%d (sizes: buf=%lu exp=%lu msg=%lu)",
221 gras_socket_peer_name(expeditor),request->host.port,
222 request->buf_size,request->exp_size,request->msg_size);
224 /* Build our answer */
225 answer = xbt_new0(s_bw_request_t,1);
227 for (port = 6000; port < 10000 && measMasterIn == NULL; port++) {
229 measMasterIn = gras_socket_server_ext(port,request->buf_size,1);
235 /* FIXME: tell error to remote */
236 RETHROW0("Error encountered while opening a measurement server socket: %s");
240 answer->buf_size=request->buf_size;
241 answer->exp_size=request->exp_size;
242 answer->msg_size=request->msg_size;
243 answer->host.port=gras_socket_my_port(measMasterIn);
245 /* Don't connect asap to leave time to other side to enter the accept() */
247 measOut = gras_socket_client_ext(gras_socket_peer_name(expeditor),
249 request->buf_size,1);
251 RETHROW2("Error encountered while opening a measurement socket back to %s:%d : %s",
252 gras_socket_peer_name(expeditor),request->host.port);
253 /* FIXME: tell error to remote */
257 gras_msg_send(expeditor, gras_msgtype_by_name("BW handshake ACK"), &answer);
259 gras_socket_close(measMasterIn);
260 gras_socket_close(measOut);
261 /* FIXME: tell error to remote */
262 RETHROW0("Error encountered while sending the answer: %s");
266 measIn = gras_socket_meas_accept(measMasterIn);
267 DEBUG4("BW handshake answered. buf_size=%lu exp_size=%lu msg_size=%lu port=%d",
268 answer->buf_size,answer->exp_size,answer->msg_size,answer->host.port);
270 gras_socket_meas_recv(measIn, 120,request->exp_size,request->msg_size);
271 gras_socket_meas_send(measOut,120,1,1);
273 gras_socket_close(measMasterIn);
274 gras_socket_close(measIn);
275 gras_socket_close(measOut);
276 /* FIXME: tell error to remote ? */
277 RETHROW0("Error encountered while receiving the experiment: %s");
280 if (measIn != measMasterIn)
281 gras_socket_close(measMasterIn);
282 gras_socket_close(measIn);
283 gras_socket_close(measOut);
286 DEBUG0("BW experiment done.");
291 * \brief request a bandwidth measurement between two remote hosts
293 * \arg from_name: Name of the first host
294 * \arg from_port: port on which the first process is listening for messages
295 * \arg to_name: Name of the second host
296 * \arg to_port: port on which the second process is listening (for messages, do not
297 * give a measurement socket here. The needed measurement sockets will be created
298 * automatically and negociated between the peers)
299 * \arg buf_size: Size of the socket buffer
300 * \arg exp_size: Total size of data sent across the network
301 * \arg msg_size: Size of each message sent. (\e expSize % \e msgSize) messages will be sent.
302 * \arg sec: where the result (in seconds) should be stored.
303 * \arg bw: observed Bandwidth (in byte/s)
305 * Conduct a bandwidth test from the process from_host:from_port to to_host:to_port.
306 * This call is blocking until the end of the experiment.
308 * Results are reported in last args, and sizes are in bytes.
310 void amok_bw_request(const char* from_name,unsigned int from_port,
311 const char* to_name,unsigned int to_port,
312 unsigned long int buf_size,
313 unsigned long int exp_size,
314 unsigned long int msg_size,
315 /*OUT*/ double *sec, double*bw) {
319 bw_request_t request;
322 request=xbt_new0(s_bw_request_t,1);
323 request->buf_size=buf_size;
324 request->exp_size=exp_size;
325 request->msg_size=msg_size;
327 request->host.name = (char*)to_name;
328 request->host.port = to_port;
330 sock = gras_socket_client(from_name,from_port);
331 gras_msg_send(sock,gras_msgtype_by_name("BW request"),&request);
334 gras_msg_wait(240,gras_msgtype_by_name("BW result"),NULL, &result);
339 VERB6("BW test between %s:%d and %s:%d took %f sec, achieving %f kb/s",
340 from_name,from_port, to_name,to_port,
343 gras_socket_close(sock);
347 int amok_bw_cb_bw_request(gras_socket_t expeditor,
350 /* specification of the test to run, and our answer */
351 bw_request_t request = *(bw_request_t*)payload;
352 bw_res_t result = xbt_new0(s_bw_res,1);
355 peer = gras_socket_client(request->host.name,request->host.port);
357 request->buf_size,request->exp_size,request->msg_size,
358 &(result->sec),&(result->bw));
360 gras_msg_send(expeditor,gras_msgtype_by_name("BW result"),&result);
363 gras_socket_close(peer);
370 int amok_bw_cb_sat_start(gras_socket_t expeditor,
372 CRITICAL0("amok_bw_cb_sat_start; not implemented");
375 int amok_bw_cb_sat_begin(gras_socket_t expeditor,
377 CRITICAL0("amok_bw_cb_sat_begin: not implemented");