benchmark.c

   1 /* Redis benchmark utility.
   2  *
   3  * Copyright (c) 2006-2009, Salvatore Sanfilippo <antirez at gmail dot com>
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions are met:
   8  *
   9  *   * Redistributions of source code must retain the above copyright notice,
  10  *     this list of conditions and the following disclaimer.
  11  *   * Redistributions in binary form must reproduce the above copyright
  12  *     notice, this list of conditions and the following disclaimer in the
  13  *     documentation and/or other materials provided with the distribution.
  14  *   * Neither the name of Redis nor the names of its contributors may be used
  15  *     to endorse or promote products derived from this software without
  16  *     specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  19  * AND 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 COPYRIGHT OWNER OR CONTRIBUTORS BE
  22  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #include "fmacros.h"
  32
  33 #include <stdio.h>
  34 #include <string.h>
  35 #include <stdlib.h>
  36 #include <unistd.h>
  37 #include <errno.h>
  38 #include <sys/time.h>
  39 #include <signal.h>
  40 #include <assert.h>
  41
  42 #include "ae.h"
  43 #include "anet.h"
  44 #include "sds.h"
  45 #include "adlist.h"
  46 #include "zmalloc.h"
  47
  48 #define REPLY_INT 0
  49 #define REPLY_RETCODE 1
  50 #define REPLY_BULK 2
  51 #define REPLY_MBULK 3
  52
  53 #define CLIENT_CONNECTING 0
  54 #define CLIENT_SENDQUERY 1
  55 #define CLIENT_READREPLY 2
  56
  57 #define MAX_LATENCY 5000
  58
  59 #define REDIS_NOTUSED(V) ((void) V)
  60
  61 static struct config {
  62     int debug;
  63     int numclients;
  64     int requests;
  65     int liveclients;
  66     int donerequests;
  67     int keysize;
  68     int datasize;
  69     int randomkeys;
  70     int randomkeys_keyspacelen;
  71     aeEventLoop *el;
  72     char *hostip;
  73     int hostport;
  74     int keepalive;
  75     long long start;
  76     long long totlatency;
  77     int *latency;
  78     list *clients;
  79     int quiet;
  80     int loop;
  81     int idlemode;
  82 } config;
  83
  84 typedef struct _client {
  85     int state;
  86     int fd;
  87     sds obuf;
  88     sds ibuf;
  89     int mbulk;          /* Number of elements in an mbulk reply */
  90     int readlen;        /* readlen == -1 means read a single line */
  91     int totreceived;
  92     unsigned int written;        /* bytes of 'obuf' already written */
  93     int replytype;
  94     long long start;    /* start time in milliseconds */
  95 } *client;
  96
  97 /* Prototypes */
  98 static void writeHandler(aeEventLoop *el, int fd, void *privdata, int mask);
  99 static void createMissingClients(client c);
 100
 101 /* Implementation */
 102 static long long mstime(void) {
 103     struct timeval tv;
 104     long long mst;
 105
 106     gettimeofday(&tv, NULL);
 107     mst = ((long)tv.tv_sec)*1000;
 108     mst += tv.tv_usec/1000;
 109     return mst;
 110 }
 111
 112 static void freeClient(client c) {
 113     listNode *ln;
 114
 115     aeDeleteFileEvent(config.el,c->fd,AE_WRITABLE);
 116     aeDeleteFileEvent(config.el,c->fd,AE_READABLE);
 117     sdsfree(c->ibuf);
 118     sdsfree(c->obuf);
 119     close(c->fd);
 120     zfree(c);
 121     config.liveclients--;
 122     ln = listSearchKey(config.clients,c);
 123     assert(ln != NULL);
 124     listDelNode(config.clients,ln);
 125 }
 126
 127 static void freeAllClients(void) {
 128     listNode *ln = config.clients->head, *next;
 129
 130     while(ln) {
 131         next = ln->next;
 132         freeClient(ln->value);
 133         ln = next;
 134     }
 135 }
 136
 137 static void resetClient(client c) {
 138     aeDeleteFileEvent(config.el,c->fd,AE_WRITABLE);
 139     aeDeleteFileEvent(config.el,c->fd,AE_READABLE);
 140     aeCreateFileEvent(config.el,c->fd, AE_WRITABLE,writeHandler,c);
 141     sdsfree(c->ibuf);
 142     c->ibuf = sdsempty();
 143     c->readlen = (c->replytype == REPLY_BULK ||
 144                   c->replytype == REPLY_MBULK) ? -1 : 0;
 145     c->mbulk = -1;
 146     c->written = 0;
 147     c->totreceived = 0;
 148     c->state = CLIENT_SENDQUERY;
 149     c->start = mstime();
 150     createMissingClients(c);
 151 }
 152
 153 static void randomizeClientKey(client c) {
 154     char *p;
 155     char buf[32];
 156     long r;
 157
 158     p = strstr(c->obuf, "_rand");
 159     if (!p) return;
 160     p += 5;
 161     r = random() % config.randomkeys_keyspacelen;
 162     sprintf(buf,"%ld",r);
 163     memcpy(p,buf,strlen(buf));
 164 }
 165
 166 static void prepareClientForReply(client c, int type) {
 167     if (type == REPLY_BULK) {
 168         c->replytype = REPLY_BULK;
 169         c->readlen = -1;
 170     } else if (type == REPLY_MBULK) {
 171         c->replytype = REPLY_MBULK;
 172         c->readlen = -1;
 173         c->mbulk = -1;
 174     } else {
 175         c->replytype = type;
 176         c->readlen = 0;
 177     }
 178 }
 179
 180 static void clientDone(client c) {
 181     static int last_tot_received = 1;
 182
 183     long long latency;
 184     config.donerequests ++;
 185     latency = mstime() - c->start;
 186     if (latency > MAX_LATENCY) latency = MAX_LATENCY;
 187     config.latency[latency]++;
 188
 189     if (config.debug && last_tot_received != c->totreceived) {
 190         printf("Tot bytes received: %d\n", c->totreceived);
 191         last_tot_received = c->totreceived;
 192     }
 193     if (config.donerequests == config.requests) {
 194         freeClient(c);
 195         aeStop(config.el);
 196         return;
 197     }
 198     if (config.keepalive) {
 199         resetClient(c);
 200         if (config.randomkeys) randomizeClientKey(c);
 201     } else {
 202         config.liveclients--;
 203         createMissingClients(c);
 204         config.liveclients++;
 205         freeClient(c);
 206     }
 207 }
 208
 209 static void readHandler(aeEventLoop *el, int fd, void *privdata, int mask)
 210 {
 211     char buf[1024];
 212     int nread;
 213     client c = privdata;
 214     REDIS_NOTUSED(el);
 215     REDIS_NOTUSED(fd);
 216     REDIS_NOTUSED(mask);
 217
 218     nread = read(c->fd, buf, 1024);
 219     if (nread == -1) {
 220         fprintf(stderr, "Reading from socket: %s\n", strerror(errno));
 221         freeClient(c);
 222         return;
 223     }
 224     if (nread == 0) {
 225         fprintf(stderr, "EOF from client\n");
 226         freeClient(c);
 227         return;
 228     }
 229     c->totreceived += nread;
 230     c->ibuf = sdscatlen(c->ibuf,buf,nread);
 231
 232 processdata:
 233     /* Are we waiting for the first line of the command of for  sdf
 234      * count in bulk or multi bulk operations? */
 235     if (c->replytype == REPLY_INT ||
 236         c->replytype == REPLY_RETCODE ||
 237         (c->replytype == REPLY_BULK && c->readlen == -1) ||
 238         (c->replytype == REPLY_MBULK && c->readlen == -1) ||
 239         (c->replytype == REPLY_MBULK && c->mbulk == -1)) {
 240         char *p;
 241
 242         /* Check if the first line is complete. This is only true if
 243          * there is a newline inside the buffer. */
 244         if ((p = strchr(c->ibuf,'\n')) != NULL) {
 245             if (c->replytype == REPLY_BULK ||
 246                 (c->replytype == REPLY_MBULK && c->mbulk != -1))
 247             {
 248                 /* Read the count of a bulk reply (being it a single bulk or
 249                  * a multi bulk reply). "$<count>" for the protocol spec. */
 250                 *p = '\0';
 251                 *(p-1) = '\0';
 252                 c->readlen = atoi(c->ibuf+1)+2;
 253                 // printf("BULK ATOI: %s\n", c->ibuf+1);
 254                 /* Handle null bulk reply "$-1" */
 255                 if (c->readlen-2 == -1) {
 256                     clientDone(c);
 257                     return;
 258                 }
 259                 /* Leave all the rest in the input buffer */
 260                 c->ibuf = sdsrange(c->ibuf,(p-c->ibuf)+1,-1);
 261                 /* fall through to reach the point where the code will try
 262                  * to check if the bulk reply is complete. */
 263             } else if (c->replytype == REPLY_MBULK && c->mbulk == -1) {
 264                 /* Read the count of a multi bulk reply. That is, how many
 265                  * bulk replies we have to read next. "*<count>" protocol. */
 266                 *p = '\0';
 267                 *(p-1) = '\0';
 268                 c->mbulk = atoi(c->ibuf+1);
 269                 /* Handle null bulk reply "*-1" */
 270                 if (c->mbulk == -1) {
 271                     clientDone(c);
 272                     return;
 273                 }
 274                 // printf("%p) %d elements list\n", c, c->mbulk);
 275                 /* Leave all the rest in the input buffer */
 276                 c->ibuf = sdsrange(c->ibuf,(p-c->ibuf)+1,-1);
 277                 goto processdata;
 278             } else {
 279                 c->ibuf = sdstrim(c->ibuf,"\r\n");
 280                 clientDone(c);
 281                 return;
 282             }
 283         }
 284     }
 285     /* bulk read, did we read everything? */
 286     if (((c->replytype == REPLY_MBULK && c->mbulk != -1) ||
 287          (c->replytype == REPLY_BULK)) && c->readlen != -1 &&
 288           (unsigned)c->readlen <= sdslen(c->ibuf))
 289     {
 290         // printf("BULKSTATUS mbulk:%d readlen:%d sdslen:%d\n",
 291         //    c->mbulk,c->readlen,sdslen(c->ibuf));
 292         if (c->replytype == REPLY_BULK) {
 293             clientDone(c);
 294         } else if (c->replytype == REPLY_MBULK) {
 295             // printf("%p) %d (%d)) ",c, c->mbulk, c->readlen);
 296             // fwrite(c->ibuf,c->readlen,1,stdout);
 297             // printf("\n");
 298             if (--c->mbulk == 0) {
 299                 clientDone(c);
 300             } else {
 301                 c->ibuf = sdsrange(c->ibuf,c->readlen,-1);
 302                 c->readlen = -1;
 303                 goto processdata;
 304             }
 305         }
 306     }
 307 }
 308
 309 static void writeHandler(aeEventLoop *el, int fd, void *privdata, int mask)
 310 {
 311     client c = privdata;
 312     REDIS_NOTUSED(el);
 313     REDIS_NOTUSED(fd);
 314     REDIS_NOTUSED(mask);
 315
 316     if (c->state == CLIENT_CONNECTING) {
 317         c->state = CLIENT_SENDQUERY;
 318         c->start = mstime();
 319     }
 320     if (sdslen(c->obuf) > c->written) {
 321         void *ptr = c->obuf+c->written;
 322         int len = sdslen(c->obuf) - c->written;
 323         int nwritten = write(c->fd, ptr, len);
 324         if (nwritten == -1) {
 325             if (errno != EPIPE)
 326                 fprintf(stderr, "Writing to socket: %s\n", strerror(errno));
 327             freeClient(c);
 328             return;
 329         }
 330         c->written += nwritten;
 331         if (sdslen(c->obuf) == c->written) {
 332             aeDeleteFileEvent(config.el,c->fd,AE_WRITABLE);
 333             aeCreateFileEvent(config.el,c->fd,AE_READABLE,readHandler,c);
 334             c->state = CLIENT_READREPLY;
 335         }
 336     }
 337 }
 338
 339 static client createClient(void) {
 340     client c = zmalloc(sizeof(struct _client));
 341     char err[ANET_ERR_LEN];
 342
 343     c->fd = anetTcpNonBlockConnect(err,config.hostip,config.hostport);
 344     if (c->fd == ANET_ERR) {
 345         zfree(c);
 346         fprintf(stderr,"Connect: %s\n",err);
 347         return NULL;
 348     }
 349     anetTcpNoDelay(NULL,c->fd);
 350     c->obuf = sdsempty();
 351     c->ibuf = sdsempty();
 352     c->mbulk = -1;
 353     c->readlen = 0;
 354     c->written = 0;
 355     c->totreceived = 0;
 356     c->state = CLIENT_CONNECTING;
 357     aeCreateFileEvent(config.el, c->fd, AE_WRITABLE, writeHandler, c);
 358     config.liveclients++;
 359     listAddNodeTail(config.clients,c);
 360     return c;
 361 }
 362
 363 static void createMissingClients(client c) {
 364     while(config.liveclients < config.numclients) {
 365         client new = createClient();
 366         if (!new) continue;
 367         sdsfree(new->obuf);
 368         new->obuf = sdsdup(c->obuf);
 369         if (config.randomkeys) randomizeClientKey(c);
 370         prepareClientForReply(new,c->replytype);
 371     }
 372 }
 373
 374 static void showLatencyReport(char *title) {
 375     int j, seen = 0;
 376     float perc, reqpersec;
 377
 378     reqpersec = (float)config.donerequests/((float)config.totlatency/1000);
 379     if (!config.quiet) {
 380         printf("====== %s ======\n", title);
 381         printf("  %d requests completed in %.2f seconds\n", config.donerequests,
 382             (float)config.totlatency/1000);
 383         printf("  %d parallel clients\n", config.numclients);
 384         printf("  %d bytes payload\n", config.datasize);
 385         printf("  keep alive: %d\n", config.keepalive);
 386         printf("\n");
 387         for (j = 0; j <= MAX_LATENCY; j++) {
 388             if (config.latency[j]) {
 389                 seen += config.latency[j];
 390                 perc = ((float)seen*100)/config.donerequests;
 391                 printf("%.2f%% <= %d milliseconds\n", perc, j);
 392             }
 393         }
 394         printf("%.2f requests per second\n\n", reqpersec);
 395     } else {
 396         printf("%s: %.2f requests per second\n", title, reqpersec);
 397     }
 398 }
 399
 400 static void prepareForBenchmark(void)
 401 {
 402     memset(config.latency,0,sizeof(int)*(MAX_LATENCY+1));
 403     config.start = mstime();
 404     config.donerequests = 0;
 405 }
 406
 407 static void endBenchmark(char *title) {
 408     config.totlatency = mstime()-config.start;
 409     showLatencyReport(title);
 410     freeAllClients();
 411 }
 412
 413 void parseOptions(int argc, char **argv) {
 414     int i;
 415
 416     for (i = 1; i < argc; i++) {
 417         int lastarg = i==argc-1;
 418
 419         if (!strcmp(argv[i],"-c") && !lastarg) {
 420             config.numclients = atoi(argv[i+1]);
 421             i++;
 422         } else if (!strcmp(argv[i],"-n") && !lastarg) {
 423             config.requests = atoi(argv[i+1]);
 424             i++;
 425         } else if (!strcmp(argv[i],"-k") && !lastarg) {
 426             config.keepalive = atoi(argv[i+1]);
 427             i++;
 428         } else if (!strcmp(argv[i],"-h") && !lastarg) {
 429             char *ip = zmalloc(32);
 430             if (anetResolve(NULL,argv[i+1],ip) == ANET_ERR) {
 431                 printf("Can't resolve %s\n", argv[i]);
 432                 exit(1);
 433             }
 434             config.hostip = ip;
 435             i++;
 436         } else if (!strcmp(argv[i],"-p") && !lastarg) {
 437             config.hostport = atoi(argv[i+1]);
 438             i++;
 439         } else if (!strcmp(argv[i],"-d") && !lastarg) {
 440             config.datasize = atoi(argv[i+1]);
 441             i++;
 442             if (config.datasize < 1) config.datasize=1;
 443             if (config.datasize > 1024*1024) config.datasize = 1024*1024;
 444         } else if (!strcmp(argv[i],"-r") && !lastarg) {
 445             config.randomkeys = 1;
 446             config.randomkeys_keyspacelen = atoi(argv[i+1]);
 447             if (config.randomkeys_keyspacelen < 0)
 448                 config.randomkeys_keyspacelen = 0;
 449             i++;
 450         } else if (!strcmp(argv[i],"-q")) {
 451             config.quiet = 1;
 452         } else if (!strcmp(argv[i],"-l")) {
 453             config.loop = 1;
 454         } else if (!strcmp(argv[i],"-D")) {
 455             config.debug = 1;
 456         } else if (!strcmp(argv[i],"-I")) {
 457             config.idlemode = 1;
 458         } else {
 459             printf("Wrong option '%s' or option argument missing\n\n",argv[i]);
 460             printf("Usage: redis-benchmark [-h <host>] [-p <port>] [-c <clients>] [-n <requests]> [-k <boolean>]\n\n");
 461             printf(" -h <hostname>      Server hostname (default 127.0.0.1)\n");
 462             printf(" -p <hostname>      Server port (default 6379)\n");
 463             printf(" -c <clients>       Number of parallel connections (default 50)\n");
 464             printf(" -n <requests>      Total number of requests (default 10000)\n");
 465             printf(" -d <size>          Data size of SET/GET value in bytes (default 2)\n");
 466             printf(" -k <boolean>       1=keep alive 0=reconnect (default 1)\n");
 467             printf(" -r <keyspacelen>   Use random keys for SET/GET/INCR\n");
 468             printf("  Using this option the benchmark will get/set keys\n");
 469             printf("  in the form mykey_rand000000012456 instead of constant\n");
 470             printf("  keys, the <keyspacelen> argument determines the max\n");
 471             printf("  number of values for the random number. For instance\n");
 472             printf("  if set to 10 only rand000000000000 - rand000000000009\n");
 473             printf("  range will be allowed.\n");
 474             printf(" -q                 Quiet. Just show query/sec values\n");
 475             printf(" -l                 Loop. Run the tests forever\n");
 476             printf(" -I                 Idle mode. Just open N idle connections and wait.\n");
 477             printf(" -D                 Debug mode. more verbose.\n");
 478             exit(1);
 479         }
 480     }
 481 }
 482
 483 int main(int argc, char **argv) {
 484     client c;
 485
 486     signal(SIGHUP, SIG_IGN);
 487     signal(SIGPIPE, SIG_IGN);
 488
 489     config.debug = 0;
 490     config.numclients = 50;
 491     config.requests = 10000;
 492     config.liveclients = 0;
 493     config.el = aeCreateEventLoop();
 494     config.keepalive = 1;
 495     config.donerequests = 0;
 496     config.datasize = 3;
 497     config.randomkeys = 0;
 498     config.randomkeys_keyspacelen = 0;
 499     config.quiet = 0;
 500     config.loop = 0;
 501     config.idlemode = 0;
 502     config.latency = NULL;
 503     config.clients = listCreate();
 504     config.latency = zmalloc(sizeof(int)*(MAX_LATENCY+1));
 505
 506     config.hostip = "127.0.0.1";
 507     config.hostport = 6379;
 508
 509     parseOptions(argc,argv);
 510
 511     if (config.keepalive == 0) {
 512         printf("WARNING: keepalive disabled, you probably need 'echo 1 > /proc/sys/net/ipv4/tcp_tw_reuse' for Linux and 'sudo sysctl -w net.inet.tcp.msl=1000' for Mac OS X in order to use a lot of clients/requests\n");
 513     }
 514
 515     if (config.idlemode) {
 516         printf("Creating %d idle connections and waiting forever (Ctrl+C when done)\n", config.numclients);
 517         prepareForBenchmark();
 518         c = createClient();
 519         if (!c) exit(1);
 520         c->obuf = sdsempty();
 521         prepareClientForReply(c,REPLY_RETCODE); /* will never receive it */
 522         createMissingClients(c);
 523         aeMain(config.el);
 524         /* and will wait for every */
 525     }
 526
 527     do {
 528         prepareForBenchmark();
 529         c = createClient();
 530         if (!c) exit(1);
 531         c->obuf = sdscatprintf(c->obuf,"SET foo_rand000000000000 %d\r\n",config.datasize);
 532         {
 533             char *data = zmalloc(config.datasize+2);
 534             memset(data,'x',config.datasize);
 535             data[config.datasize] = '\r';
 536             data[config.datasize+1] = '\n';
 537             c->obuf = sdscatlen(c->obuf,data,config.datasize+2);
 538         }
 539         prepareClientForReply(c,REPLY_RETCODE);
 540         createMissingClients(c);
 541         aeMain(config.el);
 542         endBenchmark("SET");
 543
 544         prepareForBenchmark();
 545         c = createClient();
 546         if (!c) exit(1);
 547         c->obuf = sdscat(c->obuf,"GET foo_rand000000000000\r\n");
 548         prepareClientForReply(c,REPLY_BULK);
 549         createMissingClients(c);
 550         aeMain(config.el);
 551         endBenchmark("GET");
 552
 553         prepareForBenchmark();
 554         c = createClient();
 555         if (!c) exit(1);
 556         c->obuf = sdscat(c->obuf,"INCR counter_rand000000000000\r\n");
 557         prepareClientForReply(c,REPLY_INT);
 558         createMissingClients(c);
 559         aeMain(config.el);
 560         endBenchmark("INCR");
 561
 562         prepareForBenchmark();
 563         c = createClient();
 564         if (!c) exit(1);
 565         c->obuf = sdscat(c->obuf,"LPUSH mylist 3\r\nbar\r\n");
 566         prepareClientForReply(c,REPLY_INT);
 567         createMissingClients(c);
 568         aeMain(config.el);
 569         endBenchmark("LPUSH");
 570
 571         prepareForBenchmark();
 572         c = createClient();
 573         if (!c) exit(1);
 574         c->obuf = sdscat(c->obuf,"LPOP mylist\r\n");
 575         prepareClientForReply(c,REPLY_BULK);
 576         createMissingClients(c);
 577         aeMain(config.el);
 578         endBenchmark("LPOP");
 579
 580         prepareForBenchmark();
 581         c = createClient();
 582         if (!c) exit(1);
 583         c->obuf = sdscat(c->obuf,"PING\r\n");
 584         prepareClientForReply(c,REPLY_RETCODE);
 585         createMissingClients(c);
 586         aeMain(config.el);
 587         endBenchmark("PING");
 588
 589         prepareForBenchmark();
 590         c = createClient();
 591         if (!c) exit(1);
 592         c->obuf = sdscat(c->obuf,"LPUSH mylist 3\r\nbar\r\n");
 593         prepareClientForReply(c,REPLY_RETCODE);
 594         createMissingClients(c);
 595         aeMain(config.el);
 596         endBenchmark("LPUSH (again, in order to bench LRANGE)");
 597
 598         prepareForBenchmark();
 599         c = createClient();
 600         if (!c) exit(1);
 601         c->obuf = sdscat(c->obuf,"LRANGE mylist 0 99\r\n");
 602         prepareClientForReply(c,REPLY_MBULK);
 603         createMissingClients(c);
 604         aeMain(config.el);
 605         endBenchmark("LRANGE (first 100 elements)");
 606
 607         prepareForBenchmark();
 608         c = createClient();
 609         if (!c) exit(1);
 610         c->obuf = sdscat(c->obuf,"LRANGE mylist 0 299\r\n");
 611         prepareClientForReply(c,REPLY_MBULK);
 612         createMissingClients(c);
 613         aeMain(config.el);
 614         endBenchmark("LRANGE (first 300 elements)");
 615
 616         prepareForBenchmark();
 617         c = createClient();
 618         if (!c) exit(1);
 619         c->obuf = sdscat(c->obuf,"LRANGE mylist 0 449\r\n");
 620         prepareClientForReply(c,REPLY_MBULK);
 621         createMissingClients(c);
 622         aeMain(config.el);
 623         endBenchmark("LRANGE (first 450 elements)");
 624
 625         prepareForBenchmark();
 626         c = createClient();
 627         if (!c) exit(1);
 628         c->obuf = sdscat(c->obuf,"LRANGE mylist 0 599\r\n");
 629         prepareClientForReply(c,REPLY_MBULK);
 630         createMissingClients(c);
 631         aeMain(config.el);
 632         endBenchmark("LRANGE (first 600 elements)");
 633
 634         printf("\n");
 635     } while(config.loop);
 636
 637     return 0;
 638 }