src/redis-benchmark.c

   1 /* Redis benchmark utility.
   2  *
   3  * Copyright (c) 2009-2010, 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 "hiredis.h"
  44 #include "sds.h"
  45 #include "adlist.h"
  46 #include "zmalloc.h"
  47
  48 #define REDIS_NOTUSED(V) ((void) V)
  49
  50 static struct config {
  51     aeEventLoop *el;
  52     const char *hostip;
  53     int hostport;
  54     const char *hostsocket;
  55     int numclients;
  56     int liveclients;
  57     int requests;
  58     int requests_issued;
  59     int requests_finished;
  60     int keysize;
  61     int datasize;
  62     int randomkeys;
  63     int randomkeys_keyspacelen;
  64     int keepalive;
  65     long long start;
  66     long long totlatency;
  67     long long *latency;
  68     const char *title;
  69     list *clients;
  70     int quiet;
  71     int csv;
  72     int loop;
  73     int idlemode;
  74     char *tests;
  75 } config;
  76
  77 typedef struct _client {
  78     redisContext *context;
  79     sds obuf;
  80     char *randptr[10]; /* needed for MSET against 10 keys */
  81     size_t randlen;
  82     unsigned int written; /* bytes of 'obuf' already written */
  83     long long start; /* start time of a request */
  84     long long latency; /* request latency */
  85 } *client;
  86
  87 /* Prototypes */
  88 static void writeHandler(aeEventLoop *el, int fd, void *privdata, int mask);
  89 static void createMissingClients(client c);
  90
  91 /* Implementation */
  92 static long long ustime(void) {
  93     struct timeval tv;
  94     long long ust;
  95
  96     gettimeofday(&tv, NULL);
  97     ust = ((long)tv.tv_sec)*1000000;
  98     ust += tv.tv_usec;
  99     return ust;
 100 }
 101
 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     aeDeleteFileEvent(config.el,c->context->fd,AE_WRITABLE);
 115     aeDeleteFileEvent(config.el,c->context->fd,AE_READABLE);
 116     redisFree(c->context);
 117     sdsfree(c->obuf);
 118     zfree(c);
 119     config.liveclients--;
 120     ln = listSearchKey(config.clients,c);
 121     assert(ln != NULL);
 122     listDelNode(config.clients,ln);
 123 }
 124
 125 static void freeAllClients(void) {
 126     listNode *ln = config.clients->head, *next;
 127
 128     while(ln) {
 129         next = ln->next;
 130         freeClient(ln->value);
 131         ln = next;
 132     }
 133 }
 134
 135 static void resetClient(client c) {
 136     aeDeleteFileEvent(config.el,c->context->fd,AE_WRITABLE);
 137     aeDeleteFileEvent(config.el,c->context->fd,AE_READABLE);
 138     aeCreateFileEvent(config.el,c->context->fd,AE_WRITABLE,writeHandler,c);
 139     c->written = 0;
 140 }
 141
 142 static void randomizeClientKey(client c) {
 143     char buf[32];
 144     size_t i, r;
 145
 146     for (i = 0; i < c->randlen; i++) {
 147         r = random() % config.randomkeys_keyspacelen;
 148         snprintf(buf,sizeof(buf),"%012zu",r);
 149         memcpy(c->randptr[i],buf,12);
 150     }
 151 }
 152
 153 static void clientDone(client c) {
 154     if (config.requests_finished == config.requests) {
 155         freeClient(c);
 156         aeStop(config.el);
 157         return;
 158     }
 159     if (config.keepalive) {
 160         resetClient(c);
 161     } else {
 162         config.liveclients--;
 163         createMissingClients(c);
 164         config.liveclients++;
 165         freeClient(c);
 166     }
 167 }
 168
 169 static void readHandler(aeEventLoop *el, int fd, void *privdata, int mask) {
 170     client c = privdata;
 171     void *reply = NULL;
 172     REDIS_NOTUSED(el);
 173     REDIS_NOTUSED(fd);
 174     REDIS_NOTUSED(mask);
 175
 176     /* Calculate latency only for the first read event. This means that the
 177      * server already sent the reply and we need to parse it. Parsing overhead
 178      * is not part of the latency, so calculate it only once, here. */
 179     if (c->latency < 0) c->latency = ustime()-(c->start);
 180
 181     if (redisBufferRead(c->context) != REDIS_OK) {
 182         fprintf(stderr,"Error: %s\n",c->context->errstr);
 183         exit(1);
 184     } else {
 185         if (redisGetReply(c->context,&reply) != REDIS_OK) {
 186             fprintf(stderr,"Error: %s\n",c->context->errstr);
 187             exit(1);
 188         }
 189         if (reply != NULL) {
 190             if (reply == (void*)REDIS_REPLY_ERROR) {
 191                 fprintf(stderr,"Unexpected error reply, exiting...\n");
 192                 exit(1);
 193             }
 194
 195             if (config.requests_finished < config.requests)
 196                 config.latency[config.requests_finished++] = c->latency;
 197             clientDone(c);
 198         }
 199     }
 200 }
 201
 202 static void writeHandler(aeEventLoop *el, int fd, void *privdata, int mask) {
 203     client c = privdata;
 204     REDIS_NOTUSED(el);
 205     REDIS_NOTUSED(fd);
 206     REDIS_NOTUSED(mask);
 207
 208     /* Initialize request when nothing was written. */
 209     if (c->written == 0) {
 210         /* Enforce upper bound to number of requests. */
 211         if (config.requests_issued++ >= config.requests) {
 212             freeClient(c);
 213             return;
 214         }
 215
 216         /* Really initialize: randomize keys and set start time. */
 217         if (config.randomkeys) randomizeClientKey(c);
 218         c->start = ustime();
 219         c->latency = -1;
 220     }
 221
 222     if (sdslen(c->obuf) > c->written) {
 223         void *ptr = c->obuf+c->written;
 224         int nwritten = write(c->context->fd,ptr,sdslen(c->obuf)-c->written);
 225         if (nwritten == -1) {
 226             if (errno != EPIPE)
 227                 fprintf(stderr, "Writing to socket: %s\n", strerror(errno));
 228             freeClient(c);
 229             return;
 230         }
 231         c->written += nwritten;
 232         if (sdslen(c->obuf) == c->written) {
 233             aeDeleteFileEvent(config.el,c->context->fd,AE_WRITABLE);
 234             aeCreateFileEvent(config.el,c->context->fd,AE_READABLE,readHandler,c);
 235         }
 236     }
 237 }
 238
 239 static client createClient(const char *cmd, size_t len) {
 240     client c = zmalloc(sizeof(struct _client));
 241     if (config.hostsocket == NULL) {
 242         c->context = redisConnectNonBlock(config.hostip,config.hostport);
 243     } else {
 244         c->context = redisConnectUnixNonBlock(config.hostsocket);
 245     }
 246     if (c->context->err) {
 247         fprintf(stderr,"Could not connect to Redis at ");
 248         if (config.hostsocket == NULL)
 249             fprintf(stderr,"%s:%d: %s\n",config.hostip,config.hostport,c->context->errstr);
 250         else
 251             fprintf(stderr,"%s: %s\n",config.hostsocket,c->context->errstr);
 252         exit(1);
 253     }
 254     c->obuf = sdsnewlen(cmd,len);
 255     c->randlen = 0;
 256     c->written = 0;
 257
 258     /* Find substrings in the output buffer that need to be randomized. */
 259     if (config.randomkeys) {
 260         char *p = c->obuf, *newline;
 261         while ((p = strstr(p,":rand:")) != NULL) {
 262             newline = strstr(p,"\r\n");
 263             assert(newline-(p+6) == 12); /* 12 chars for randomness */
 264             assert(c->randlen < (signed)(sizeof(c->randptr)/sizeof(char*)));
 265             c->randptr[c->randlen++] = p+6;
 266             p = newline+2;
 267         }
 268     }
 269
 270 /*    redisSetReplyObjectFunctions(c->context,NULL); */
 271     aeCreateFileEvent(config.el,c->context->fd,AE_WRITABLE,writeHandler,c);
 272     listAddNodeTail(config.clients,c);
 273     config.liveclients++;
 274     return c;
 275 }
 276
 277 static void createMissingClients(client c) {
 278     int n = 0;
 279
 280     while(config.liveclients < config.numclients) {
 281         createClient(c->obuf,sdslen(c->obuf));
 282
 283         /* Listen backlog is quite limited on most systems */
 284         if (++n > 64) {
 285             usleep(50000);
 286             n = 0;
 287         }
 288     }
 289 }
 290
 291 static int compareLatency(const void *a, const void *b) {
 292     return (*(long long*)a)-(*(long long*)b);
 293 }
 294
 295 static void showLatencyReport(void) {
 296     int i, curlat = 0;
 297     float perc, reqpersec;
 298
 299     reqpersec = (float)config.requests_finished/((float)config.totlatency/1000);
 300     if (!config.quiet && !config.csv) {
 301         printf("====== %s ======\n", config.title);
 302         printf("  %d requests completed in %.2f seconds\n", config.requests_finished,
 303             (float)config.totlatency/1000);
 304         printf("  %d parallel clients\n", config.numclients);
 305         printf("  %d bytes payload\n", config.datasize);
 306         printf("  keep alive: %d\n", config.keepalive);
 307         printf("\n");
 308
 309         qsort(config.latency,config.requests,sizeof(long long),compareLatency);
 310         for (i = 0; i < config.requests; i++) {
 311             if (config.latency[i]/1000 != curlat || i == (config.requests-1)) {
 312                 curlat = config.latency[i]/1000;
 313                 perc = ((float)(i+1)*100)/config.requests;
 314                 printf("%.2f%% <= %d milliseconds\n", perc, curlat);
 315             }
 316         }
 317         printf("%.2f requests per second\n\n", reqpersec);
 318     } else if (config.csv) {
 319         printf("\"%s\",\"%.2f\"\n", config.title, reqpersec);
 320     } else {
 321         printf("%s: %.2f requests per second\n", config.title, reqpersec);
 322     }
 323 }
 324
 325 static void benchmark(const char *title, const char *cmd, int len) {
 326     client c;
 327
 328     config.title = title;
 329     config.requests_issued = 0;
 330     config.requests_finished = 0;
 331
 332     c = createClient(cmd,len);
 333     createMissingClients(c);
 334
 335     config.start = mstime();
 336     aeMain(config.el);
 337     config.totlatency = mstime()-config.start;
 338
 339     showLatencyReport();
 340     freeAllClients();
 341 }
 342
 343 /* Returns number of consumed options. */
 344 int parseOptions(int argc, const char **argv) {
 345     int i;
 346     int lastarg;
 347     int exit_status = 1;
 348
 349     for (i = 1; i < argc; i++) {
 350         lastarg = (i == (argc-1));
 351
 352         if (!strcmp(argv[i],"-c")) {
 353             if (lastarg) goto invalid;
 354             config.numclients = atoi(argv[++i]);
 355         } else if (!strcmp(argv[i],"-n")) {
 356             if (lastarg) goto invalid;
 357             config.requests = atoi(argv[++i]);
 358         } else if (!strcmp(argv[i],"-k")) {
 359             if (lastarg) goto invalid;
 360             config.keepalive = atoi(argv[++i]);
 361         } else if (!strcmp(argv[i],"-h")) {
 362             if (lastarg) goto invalid;
 363             config.hostip = strdup(argv[++i]);
 364         } else if (!strcmp(argv[i],"-p")) {
 365             if (lastarg) goto invalid;
 366             config.hostport = atoi(argv[++i]);
 367         } else if (!strcmp(argv[i],"-s")) {
 368             if (lastarg) goto invalid;
 369             config.hostsocket = strdup(argv[++i]);
 370         } else if (!strcmp(argv[i],"-d")) {
 371             if (lastarg) goto invalid;
 372             config.datasize = atoi(argv[++i]);
 373             if (config.datasize < 1) config.datasize=1;
 374             if (config.datasize > 1024*1024*1024) config.datasize = 1024*1024*1024;
 375         } else if (!strcmp(argv[i],"-r")) {
 376             if (lastarg) goto invalid;
 377             config.randomkeys = 1;
 378             config.randomkeys_keyspacelen = atoi(argv[++i]);
 379             if (config.randomkeys_keyspacelen < 0)
 380                 config.randomkeys_keyspacelen = 0;
 381         } else if (!strcmp(argv[i],"-q")) {
 382             config.quiet = 1;
 383         } else if (!strcmp(argv[i],"--csv")) {
 384             config.csv = 1;
 385         } else if (!strcmp(argv[i],"-l")) {
 386             config.loop = 1;
 387         } else if (!strcmp(argv[i],"-I")) {
 388             config.idlemode = 1;
 389         } else if (!strcmp(argv[i],"-t")) {
 390             if (lastarg) goto invalid;
 391             /* We get the list of tests to run as a string in the form
 392              * get,set,lrange,...,test_N. Then we add a comma before and
 393              * after the string in order to make sure that searching
 394              * for ",testname," will always get a match if the test is
 395              * enabled. */
 396             config.tests = sdsnew(",");
 397             config.tests = sdscat(config.tests,(char*)argv[++i]);
 398             config.tests = sdscat(config.tests,",");
 399             sdstolower(config.tests);
 400         } else if (!strcmp(argv[i],"--help")) {
 401             exit_status = 0;
 402             goto usage;
 403         } else {
 404             /* Assume the user meant to provide an option when the arg starts
 405              * with a dash. We're done otherwise and should use the remainder
 406              * as the command and arguments for running the benchmark. */
 407             if (argv[i][0] == '-') goto invalid;
 408             return i;
 409         }
 410     }
 411
 412     return i;
 413
 414 invalid:
 415     printf("Invalid option \"%s\" or option argument missing\n\n",argv[i]);
 416
 417 usage:
 418     printf(
 419 "Usage: redis-benchmark [-h <host>] [-p <port>] [-c <clients>] [-n <requests]> [-k <boolean>]\n\n"
 420 " -h <hostname>      Server hostname (default 127.0.0.1)\n"
 421 " -p <port>          Server port (default 6379)\n"
 422 " -s <socket>        Server socket (overrides host and port)\n"
 423 " -c <clients>       Number of parallel connections (default 50)\n"
 424 " -n <requests>      Total number of requests (default 10000)\n"
 425 " -d <size>          Data size of SET/GET value in bytes (default 2)\n"
 426 " -k <boolean>       1=keep alive 0=reconnect (default 1)\n"
 427 " -r <keyspacelen>   Use random keys for SET/GET/INCR, random values for SADD\n"
 428 "  Using this option the benchmark will get/set keys\n"
 429 "  in the form mykey_rand:000000012456 instead of constant\n"
 430 "  keys, the <keyspacelen> argument determines the max\n"
 431 "  number of values for the random number. For instance\n"
 432 "  if set to 10 only rand:000000000000 - rand:000000000009\n"
 433 "  range will be allowed.\n"
 434 " -q                 Quiet. Just show query/sec values\n"
 435 " --csv              Output in CSV format\n"
 436 " -l                 Loop. Run the tests forever\n"
 437 " -t <tests>         Only run the comma separated list of tests. The test\n"
 438 "                    names are the same as the ones produced as output.\n"
 439 " -I                 Idle mode. Just open N idle connections and wait.\n\n"
 440 "Examples:\n\n"
 441 " Run the benchmark with the default configuration against 127.0.0.1:6379:\n"
 442 "   $ redis-benchmark\n\n"
 443 " Use 20 parallel clients, for a total of 100k requests, against 192.168.1.1:\n"
 444 "   $ redis-benchmark -h 192.168.1.1 -p 6379 -n 100000 -c 20\n\n"
 445 " Fill 127.0.0.1:6379 with about 1 million keys only using the SET test:\n"
 446 "   $ redis-benchmark -t set -n 1000000 -r 100000000\n\n"
 447 " Benchmark 127.0.0.1:6379 for a few commands producing CSV output:\n"
 448 "   $ redis-benchmark -t ping,set,get -n 100000 --csv\n\n"
 449 " Fill a list with 10000 random elements:\n"
 450 "   $ redis-benchmark -r 10000 -n 10000 lpush mylist ele:rand:000000000000\n\n"
 451     );
 452     exit(exit_status);
 453 }
 454
 455 int showThroughput(struct aeEventLoop *eventLoop, long long id, void *clientData) {
 456     REDIS_NOTUSED(eventLoop);
 457     REDIS_NOTUSED(id);
 458     REDIS_NOTUSED(clientData);
 459
 460     if (config.csv) return 250;
 461     float dt = (float)(mstime()-config.start)/1000.0;
 462     float rps = (float)config.requests_finished/dt;
 463     printf("%s: %.2f\r", config.title, rps);
 464     fflush(stdout);
 465     return 250; /* every 250ms */
 466 }
 467
 468 /* Return true if the named test was selected using the -t command line
 469  * switch, or if all the tests are selected (no -t passed by user). */
 470 int test_is_selected(char *name) {
 471     char buf[256];
 472     int l = strlen(name);
 473
 474     if (config.tests == NULL) return 1;
 475     buf[0] = ',';
 476     memcpy(buf+1,name,l);
 477     buf[l+1] = ',';
 478     buf[l+2] = '\0';
 479     return strstr(config.tests,buf) != NULL;
 480 }
 481
 482 int main(int argc, const char **argv) {
 483     int i;
 484     char *data, *cmd;
 485     int len;
 486
 487     client c;
 488
 489     signal(SIGHUP, SIG_IGN);
 490     signal(SIGPIPE, SIG_IGN);
 491
 492     config.numclients = 50;
 493     config.requests = 10000;
 494     config.liveclients = 0;
 495     config.el = aeCreateEventLoop(1024*10);
 496     aeCreateTimeEvent(config.el,1,showThroughput,NULL,NULL);
 497     config.keepalive = 1;
 498     config.datasize = 3;
 499     config.randomkeys = 0;
 500     config.randomkeys_keyspacelen = 0;
 501     config.quiet = 0;
 502     config.csv = 0;
 503     config.loop = 0;
 504     config.idlemode = 0;
 505     config.latency = NULL;
 506     config.clients = listCreate();
 507     config.hostip = "127.0.0.1";
 508     config.hostport = 6379;
 509     config.hostsocket = NULL;
 510     config.tests = NULL;
 511
 512     i = parseOptions(argc,argv);
 513     argc -= i;
 514     argv += i;
 515
 516     config.latency = zmalloc(sizeof(long long)*config.requests);
 517
 518     if (config.keepalive == 0) {
 519         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");
 520     }
 521
 522     if (config.idlemode) {
 523         printf("Creating %d idle connections and waiting forever (Ctrl+C when done)\n", config.numclients);
 524         c = createClient("",0); /* will never receive a reply */
 525         createMissingClients(c);
 526         aeMain(config.el);
 527         /* and will wait for every */
 528     }
 529
 530     /* Run benchmark with command in the remainder of the arguments. */
 531     if (argc) {
 532         sds title = sdsnew(argv[0]);
 533         for (i = 1; i < argc; i++) {
 534             title = sdscatlen(title, " ", 1);
 535             title = sdscatlen(title, (char*)argv[i], strlen(argv[i]));
 536         }
 537
 538         do {
 539             len = redisFormatCommandArgv(&cmd,argc,argv,NULL);
 540             benchmark(title,cmd,len);
 541             free(cmd);
 542         } while(config.loop);
 543
 544         return 0;
 545     }
 546
 547     /* Run default benchmark suite. */
 548     do {
 549         data = zmalloc(config.datasize+1);
 550         memset(data,'x',config.datasize);
 551         data[config.datasize] = '\0';
 552
 553         if (test_is_selected("ping_inline") || test_is_selected("ping"))
 554             benchmark("PING_INLINE","PING\r\n",6);
 555
 556         if (test_is_selected("ping_mbulk") || test_is_selected("ping")) {
 557             len = redisFormatCommand(&cmd,"PING");
 558             benchmark("PING_BULK",cmd,len);
 559             free(cmd);
 560         }
 561
 562         if (test_is_selected("set")) {
 563             len = redisFormatCommand(&cmd,"SET foo:rand:000000000000 %s",data);
 564             benchmark("SET",cmd,len);
 565             free(cmd);
 566         }
 567
 568         if (test_is_selected("get")) {
 569             len = redisFormatCommand(&cmd,"GET foo:rand:000000000000");
 570             benchmark("GET",cmd,len);
 571             free(cmd);
 572         }
 573
 574         if (test_is_selected("incr")) {
 575             len = redisFormatCommand(&cmd,"INCR counter:rand:000000000000");
 576             benchmark("INCR",cmd,len);
 577             free(cmd);
 578         }
 579
 580         if (test_is_selected("lpush")) {
 581             len = redisFormatCommand(&cmd,"LPUSH mylist %s",data);
 582             benchmark("LPUSH",cmd,len);
 583             free(cmd);
 584         }
 585
 586         if (test_is_selected("lpop")) {
 587             len = redisFormatCommand(&cmd,"LPOP mylist");
 588             benchmark("LPOP",cmd,len);
 589             free(cmd);
 590         }
 591
 592         if (test_is_selected("sadd")) {
 593             len = redisFormatCommand(&cmd,
 594                 "SADD myset counter:rand:000000000000");
 595             benchmark("SADD",cmd,len);
 596             free(cmd);
 597         }
 598
 599         if (test_is_selected("spop")) {
 600             len = redisFormatCommand(&cmd,"SPOP myset");
 601             benchmark("SPOP",cmd,len);
 602             free(cmd);
 603         }
 604
 605         if (test_is_selected("lrange") ||
 606             test_is_selected("lrange_100") ||
 607             test_is_selected("lrange_300") ||
 608             test_is_selected("lrange_500") ||
 609             test_is_selected("lrange_600"))
 610         {
 611             len = redisFormatCommand(&cmd,"LPUSH mylist %s",data);
 612             benchmark("LPUSH (needed to benchmark LRANGE)",cmd,len);
 613             free(cmd);
 614         }
 615
 616         if (test_is_selected("lrange") || test_is_selected("lrange_100")) {
 617             len = redisFormatCommand(&cmd,"LRANGE mylist 0 99");
 618             benchmark("LRANGE_100 (first 100 elements)",cmd,len);
 619             free(cmd);
 620         }
 621
 622         if (test_is_selected("lrange") || test_is_selected("lrange_300")) {
 623             len = redisFormatCommand(&cmd,"LRANGE mylist 0 299");
 624             benchmark("LRANGE_300 (first 300 elements)",cmd,len);
 625             free(cmd);
 626         }
 627
 628         if (test_is_selected("lrange") || test_is_selected("lrange_500")) {
 629             len = redisFormatCommand(&cmd,"LRANGE mylist 0 449");
 630             benchmark("LRANGE_500 (first 450 elements)",cmd,len);
 631             free(cmd);
 632         }
 633
 634         if (test_is_selected("lrange") || test_is_selected("lrange_600")) {
 635             len = redisFormatCommand(&cmd,"LRANGE mylist 0 599");
 636             benchmark("LRANGE_600 (first 600 elements)",cmd,len);
 637             free(cmd);
 638         }
 639
 640         if (test_is_selected("mset")) {
 641             const char *argv[21];
 642             argv[0] = "MSET";
 643             for (i = 1; i < 21; i += 2) {
 644                 argv[i] = "foo:rand:000000000000";
 645                 argv[i+1] = data;
 646             }
 647             len = redisFormatCommandArgv(&cmd,21,argv,NULL);
 648             benchmark("MSET (10 keys)",cmd,len);
 649             free(cmd);
 650         }
 651
 652         if (!config.csv) printf("\n");
 653     } while(config.loop);
 654
 655     return 0;
 656 }