2 * Copyright (c) 2008-2009 Robert N. M. Watson
3 * Copyright (c) 2010 Juniper Networks, Inc.
6 * This software was developed by Robert N. M. Watson under contract
7 * to Juniper Networks, Inc.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 #include <sys/types.h>
34 #include <sys/event.h>
35 #include <sys/resource.h>
36 #include <sys/sched.h>
37 #include <sys/socket.h>
38 #include <sys/sysctl.h>
43 #include <netinet/in.h>
44 #include <netinet/tcp.h>
58 #define min(x, y) (x < y ? x : y)
62 * Gist of each client worker: build up to mflag connections at a time, and
63 * pump data in to them somewhat fairly until tflag connections have been
66 #define CONNECTION_MAGIC 0x87a3f56e
68 uint32_t conn_magic; /* Just magic. */
70 struct tcpp_header conn_header; /* Header buffer. */
71 u_int conn_header_sent; /* Header bytes sent. */
72 u_int64_t conn_data_sent; /* Data bytes sent.*/
75 static u_char buffer[256 * 1024]; /* Buffer to send. */
76 static pid_t *pid_list;
78 static int started; /* Number started so far. */
79 static int finished; /* Number finished so far. */
80 static int counter; /* IP number offset. */
81 static uint64_t payload_len;
83 static struct connection *
84 tcpp_client_newconn(void)
86 struct sockaddr_in sin;
87 struct connection *conn;
92 * Spread load over available IPs, rotating through them as we go. No
93 * attempt to localize IPs to particular workers.
96 sin.sin_addr.s_addr = htonl(ntohl(localipbase.sin_addr.s_addr) +
99 fd = socket(PF_INET, SOCK_STREAM, 0);
103 if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0)
107 if (setsockopt(fd, SOL_SOCKET, SO_NOSIGPIPE, &i, sizeof(i)) < 0)
108 err(-1, "setsockopt");
110 if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &i, sizeof(i)) < 0)
111 err(-1, "setsockopt");
114 if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &i, sizeof(i)) < 0)
115 err(-1, "setsockopt");
119 if (bind(fd, (struct sockaddr *)&sin, sizeof(sin)) < 0)
123 if (connect(fd, (struct sockaddr *)&remoteip, sizeof(remoteip)) < 0 &&
124 errno != EINPROGRESS)
127 conn = malloc(sizeof(*conn));
130 bzero(conn, sizeof(*conn));
131 conn->conn_magic = CONNECTION_MAGIC;
133 conn->conn_header.th_magic = TCPP_MAGIC;
134 conn->conn_header.th_len = payload_len;
135 tcpp_header_encode(&conn->conn_header);
137 EV_SET(&kev, fd, EVFILT_WRITE, EV_ADD, 0, 0, conn);
138 if (kevent(kq, &kev, 1, NULL, 0, NULL) < 0)
139 err(-1, "newconn kevent");
146 tcpp_client_closeconn(struct connection *conn)
149 close(conn->conn_fd);
150 bzero(conn, sizeof(*conn));
156 tcpp_client_handleconn(struct kevent *kev)
158 struct connection *conn;
160 ssize_t len, header_left;
163 if (conn->conn_magic != CONNECTION_MAGIC)
164 errx(-1, "tcpp_client_handleconn: magic");
166 if (conn->conn_header_sent < sizeof(conn->conn_header)) {
167 header_left = sizeof(conn->conn_header) -
168 conn->conn_header_sent;
169 iov[0].iov_base = ((u_char *)&conn->conn_header) +
170 conn->conn_header_sent;
171 iov[0].iov_len = header_left;
172 iov[1].iov_base = buffer;
173 iov[1].iov_len = min(sizeof(buffer), payload_len);
174 len = writev(conn->conn_fd, iov, 2);
176 tcpp_client_closeconn(conn);
177 err(-1, "tcpp_client_handleconn: header write");
180 tcpp_client_closeconn(conn);
181 errx(-1, "tcpp_client_handleconn: header write "
184 if (len > header_left) {
185 conn->conn_data_sent += (len - header_left);
186 conn->conn_header_sent += header_left;
188 conn->conn_header_sent += len;
190 len = write(conn->conn_fd, buffer, min(sizeof(buffer),
191 payload_len - conn->conn_data_sent));
193 tcpp_client_closeconn(conn);
194 err(-1, "tcpp_client_handleconn: data write");
197 tcpp_client_closeconn(conn);
198 errx(-1, "tcpp_client_handleconn: data write: "
201 conn->conn_data_sent += len;
203 if (conn->conn_data_sent >= payload_len) {
207 tcpp_client_closeconn(conn);
212 tcpp_client_worker(int workernum)
214 struct kevent *kev_array;
215 int i, numevents, kev_bytes;
216 #if defined(CPU_SETSIZE) && 0
223 if (sysctlbyname(SYSCTLNAME_CPUS, &ncpus, &len, NULL, 0) < 0)
224 err(-1, "sysctlbyname: %s", SYSCTLNAME_CPUS);
225 if (len != sizeof(ncpus))
226 errx(-1, "sysctlbyname: %s: len %jd", SYSCTLNAME_CPUS,
230 CPU_SET(workernum % ncpus, &mask);
231 if (sched_setaffinity(0, CPU_SETSIZE, &mask) < 0)
232 err(-1, "sched_setaffinity");
235 setproctitle("tcpp_client %d", workernum);
238 * Add the worker number to the remote port.
240 remoteip.sin_port = htons(rflag + workernum);
242 kev_bytes = sizeof(*kev_array) * mflag;
243 kev_array = malloc(kev_bytes);
244 if (kev_array == NULL)
246 bzero(kev_array, kev_bytes);
252 while (finished < tflag) {
253 while ((started - finished < mflag) && (started < tflag))
254 (void)tcpp_client_newconn();
255 numevents = kevent(kq, NULL, 0, kev_array, mflag, NULL);
258 if (numevents > mflag)
259 errx(-1, "kevent: %d", numevents);
260 for (i = 0; i < numevents; i++)
261 tcpp_client_handleconn(&kev_array[i]);
263 /* printf("Worker %d done - %d finished\n", workernum, finished); */
269 struct timespec ts_start, ts_finish;
270 long cp_time_start[CPUSTATES], cp_time_finish[CPUSTATES];
274 int i, failed, status;
276 if (bflag < sizeof(struct tcpp_header))
277 errx(-1, "Can't use -b less than %zu\n",
278 sizeof(struct tcpp_header));
279 payload_len = bflag - sizeof(struct tcpp_header);
281 pid_list = malloc(sizeof(*pid_list) * pflag);
282 if (pid_list == NULL)
283 err(-1, "malloc pid_list");
284 bzero(pid_list, sizeof(*pid_list) * pflag);
289 size = sizeof(cp_time_start);
290 if (sysctlbyname(SYSCTLNAME_CPTIME, &cp_time_start, &size, NULL, 0)
292 err(-1, "sysctlbyname: %s", SYSCTLNAME_CPTIME);
293 if (clock_gettime(CLOCK_REALTIME, &ts_start) < 0)
294 err(-1, "clock_gettime");
295 for (i = 0; i < pflag; i++) {
299 for (i = 0; i < pflag; i++) {
300 if (pid_list[i] != 0)
301 (void)kill(pid_list[i], SIGKILL);
306 tcpp_client_worker(i);
316 for (i = 0; i < pflag; i++) {
317 if (pid_list[i] != 0) {
318 while (waitpid(pid_list[i], &status, 0) != pid_list[i]);
319 if (WEXITSTATUS(status) != 0)
323 if (clock_gettime(CLOCK_REALTIME, &ts_finish) < 0)
324 err(-1, "clock_gettime");
325 size = sizeof(cp_time_finish);
326 if (sysctlbyname(SYSCTLNAME_CPTIME, &cp_time_finish, &size, NULL, 0)
328 err(-1, "sysctlbyname: %s", SYSCTLNAME_CPTIME);
329 timespecsub(&ts_finish, &ts_start, &ts_finish);
332 errx(-1, "Too many errors");
335 printf("bytes,seconds,conn/s,Gb/s,user%%,nice%%,sys%%,"
339 * Configuration parameters.
341 printf("%jd,", bflag * tflag * pflag);
342 printf("%jd.%09jd,", (intmax_t)ts_finish.tv_sec,
343 (intmax_t)(ts_finish.tv_nsec));
346 * Effective transmit rates.
348 printf("%f,", (double)(pflag * tflag)/
349 (ts_finish.tv_sec + ts_finish.tv_nsec * 1e-9));
350 printf("%f,", (double)(bflag * tflag * pflag * 8) /
351 (ts_finish.tv_sec + ts_finish.tv_nsec * 1e-9) * 1e-9);
357 for (i = 0; i < CPUSTATES; i++) {
358 cp_time_finish[i] -= cp_time_start[i];
359 ticks += cp_time_finish[i];
361 printf("%0.02f,", (float)(100 * cp_time_finish[CP_USER]) / ticks);
362 printf("%0.02f,", (float)(100 * cp_time_finish[CP_NICE]) / ticks);
363 printf("%0.02f,", (float)(100 * cp_time_finish[CP_SYS]) / ticks);
364 printf("%0.02f,", (float)(100 * cp_time_finish[CP_INTR]) / ticks);
365 printf("%0.02f", (float)(100 * cp_time_finish[CP_IDLE]) / ticks);