[redis.git] / benchmark.c

/* Redis benchmark utility.
 *
 * Copyright (c) 2006-2009, Salvatore Sanfilippo <antirez at gmail dot com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   * Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *   * Neither the name of Redis nor the names of its contributors may be used
 *     to endorse or promote products derived from this software without
 *     specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "fmacros.h"

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <sys/time.h>
#include <signal.h>
#include <assert.h>

#include "ae.h"
#include "anet.h"
#include "sds.h"
#include "adlist.h"
#include "zmalloc.h"

#define REPLY_INT 0
#define REPLY_RETCODE 1
#define REPLY_BULK 2
#define REPLY_MBULK 3

#define CLIENT_CONNECTING 0
#define CLIENT_SENDQUERY 1
#define CLIENT_READREPLY 2

#define MAX_LATENCY 5000

#define REDIS_NOTUSED(V) ((void) V)

static struct config {
    int debug;
    int numclients;
    int requests;
    int liveclients;
    int donerequests;
    int keysize;
    int datasize;
    int randomkeys;
    int randomkeys_keyspacelen;
    aeEventLoop *el;
    char *hostip;
    int hostport;
    int keepalive;
    long long start;
    long long totlatency;
    int *latency;
    list *clients;
    int quiet;
    int loop;
    int idlemode;
} config;

typedef struct _client {
    int state;
    int fd;
    sds obuf;
    sds ibuf;
    int mbulk;          /* Number of elements in an mbulk reply */
    int readlen;        /* readlen == -1 means read a single line */
    int totreceived;
    unsigned int written;        /* bytes of 'obuf' already written */
    int replytype;
    long long start;    /* start time in milliseconds */
} *client;

/* Prototypes */
static void writeHandler(aeEventLoop *el, int fd, void *privdata, int mask);
static void createMissingClients(client c);

/* Implementation */
static long long mstime(void) {
    struct timeval tv;
    long long mst;

    gettimeofday(&tv, NULL);
    mst = ((long)tv.tv_sec)*1000;
    mst += tv.tv_usec/1000;
    return mst;
}

static void freeClient(client c) {
    listNode *ln;

    aeDeleteFileEvent(config.el,c->fd,AE_WRITABLE);
    aeDeleteFileEvent(config.el,c->fd,AE_READABLE);
    sdsfree(c->ibuf);
    sdsfree(c->obuf);
    close(c->fd);
    zfree(c);
    config.liveclients--;
    ln = listSearchKey(config.clients,c);
    assert(ln != NULL);
    listDelNode(config.clients,ln);
}

static void freeAllClients(void) {
    listNode *ln = config.clients->head, *next;

    while(ln) {
        next = ln->next;
        freeClient(ln->value);
        ln = next;
    }
}

static void resetClient(client c) {
    aeDeleteFileEvent(config.el,c->fd,AE_WRITABLE);
    aeDeleteFileEvent(config.el,c->fd,AE_READABLE);
    aeCreateFileEvent(config.el,c->fd, AE_WRITABLE,writeHandler,c);
    sdsfree(c->ibuf);
    c->ibuf = sdsempty();
    c->readlen = (c->replytype == REPLY_BULK ||
                  c->replytype == REPLY_MBULK) ? -1 : 0;
    c->mbulk = -1;
    c->written = 0;
    c->totreceived = 0;
    c->state = CLIENT_SENDQUERY;
    c->start = mstime();
    createMissingClients(c);
}

static void randomizeClientKey(client c) {
    char *p;
    char buf[32];
    long r;

    p = strstr(c->obuf, "_rand");
    if (!p) return;
    p += 5;
    r = random() % config.randomkeys_keyspacelen;
    sprintf(buf,"%ld",r);
    memcpy(p,buf,strlen(buf));
}

static void prepareClientForReply(client c, int type) {
    if (type == REPLY_BULK) {
        c->replytype = REPLY_BULK;
        c->readlen = -1;
    } else if (type == REPLY_MBULK) {
        c->replytype = REPLY_MBULK;
        c->readlen = -1;
        c->mbulk = -1;
    } else {
        c->replytype = type;
        c->readlen = 0;
    }
}

static void clientDone(client c) {
    static int last_tot_received = 1;

    long long latency;
    config.donerequests ++;
    latency = mstime() - c->start;
    if (latency > MAX_LATENCY) latency = MAX_LATENCY;
    config.latency[latency]++;

    if (config.debug && last_tot_received != c->totreceived) {
        printf("Tot bytes received: %d\n", c->totreceived);
        last_tot_received = c->totreceived;
    }
    if (config.donerequests == config.requests) {
        freeClient(c);
        aeStop(config.el);
        return;
    }
    if (config.keepalive) {
        resetClient(c);
        if (config.randomkeys) randomizeClientKey(c);
    } else {
        config.liveclients--;
        createMissingClients(c);
        config.liveclients++;
        freeClient(c);
    }
}

static void readHandler(aeEventLoop *el, int fd, void *privdata, int mask)
{
    char buf[1024];
    int nread;
    client c = privdata;
    REDIS_NOTUSED(el);
    REDIS_NOTUSED(fd);
    REDIS_NOTUSED(mask);

    nread = read(c->fd, buf, 1024);
    if (nread == -1) {
        fprintf(stderr, "Reading from socket: %s\n", strerror(errno));
        freeClient(c);
        return;
    }
    if (nread == 0) {
        fprintf(stderr, "EOF from client\n");
        freeClient(c);
        return;
    }
    c->totreceived += nread;
    c->ibuf = sdscatlen(c->ibuf,buf,nread);

processdata:
    /* Are we waiting for the first line of the command of for  sdf 
     * count in bulk or multi bulk operations? */
    if (c->replytype == REPLY_INT ||
        c->replytype == REPLY_RETCODE ||
        (c->replytype == REPLY_BULK && c->readlen == -1) ||
        (c->replytype == REPLY_MBULK && c->readlen == -1) ||
        (c->replytype == REPLY_MBULK && c->mbulk == -1)) {
        char *p;

        /* Check if the first line is complete. This is only true if
         * there is a newline inside the buffer. */
        if ((p = strchr(c->ibuf,'\n')) != NULL) {
            if (c->replytype == REPLY_BULK ||
                (c->replytype == REPLY_MBULK && c->mbulk != -1))
            {
                /* Read the count of a bulk reply (being it a single bulk or
                 * a multi bulk reply). "$<count>" for the protocol spec. */
                *p = '\0';
                *(p-1) = '\0';
                c->readlen = atoi(c->ibuf+1)+2;
                // printf("BULK ATOI: %s\n", c->ibuf+1);
                /* Handle null bulk reply "$-1" */
                if (c->readlen-2 == -1) {
                    clientDone(c);
                    return;
                }
                /* Leave all the rest in the input buffer */
                c->ibuf = sdsrange(c->ibuf,(p-c->ibuf)+1,-1);
                /* fall through to reach the point where the code will try
                 * to check if the bulk reply is complete. */
            } else if (c->replytype == REPLY_MBULK && c->mbulk == -1) {
                /* Read the count of a multi bulk reply. That is, how many
                 * bulk replies we have to read next. "*<count>" protocol. */
                *p = '\0';
                *(p-1) = '\0';
                c->mbulk = atoi(c->ibuf+1);
                /* Handle null bulk reply "*-1" */
                if (c->mbulk == -1) {
                    clientDone(c);
                    return;
                }
                // printf("%p) %d elements list\n", c, c->mbulk);
                /* Leave all the rest in the input buffer */
                c->ibuf = sdsrange(c->ibuf,(p-c->ibuf)+1,-1);
                goto processdata;
            } else {
                c->ibuf = sdstrim(c->ibuf,"\r\n");
                clientDone(c);
                return;
            }
        }
    }
    /* bulk read, did we read everything? */
    if (((c->replytype == REPLY_MBULK && c->mbulk != -1) || 
         (c->replytype == REPLY_BULK)) && c->readlen != -1 &&
          (unsigned)c->readlen <= sdslen(c->ibuf))
    {
        // printf("BULKSTATUS mbulk:%d readlen:%d sdslen:%d\n",
        //    c->mbulk,c->readlen,sdslen(c->ibuf));
        if (c->replytype == REPLY_BULK) {
            clientDone(c);
        } else if (c->replytype == REPLY_MBULK) {
            // printf("%p) %d (%d)) ",c, c->mbulk, c->readlen);
            // fwrite(c->ibuf,c->readlen,1,stdout);
            // printf("\n");
            if (--c->mbulk == 0) {
                clientDone(c);
            } else {
                c->ibuf = sdsrange(c->ibuf,c->readlen,-1);
                c->readlen = -1;
                goto processdata;
            }
        }
    }
}

static void writeHandler(aeEventLoop *el, int fd, void *privdata, int mask)
{
    client c = privdata;
    REDIS_NOTUSED(el);
    REDIS_NOTUSED(fd);
    REDIS_NOTUSED(mask);

    if (c->state == CLIENT_CONNECTING) {
        c->state = CLIENT_SENDQUERY;
        c->start = mstime();
    }
    if (sdslen(c->obuf) > c->written) {
        void *ptr = c->obuf+c->written;
        int len = sdslen(c->obuf) - c->written;
        int nwritten = write(c->fd, ptr, len);
        if (nwritten == -1) {
            if (errno != EPIPE)
                fprintf(stderr, "Writing to socket: %s\n", strerror(errno));
            freeClient(c);
            return;
        }
        c->written += nwritten;
        if (sdslen(c->obuf) == c->written) {
            aeDeleteFileEvent(config.el,c->fd,AE_WRITABLE);
            aeCreateFileEvent(config.el,c->fd,AE_READABLE,readHandler,c);
            c->state = CLIENT_READREPLY;
        }
    }
}

static client createClient(void) {
    client c = zmalloc(sizeof(struct _client));
    char err[ANET_ERR_LEN];

    c->fd = anetTcpNonBlockConnect(err,config.hostip,config.hostport);
    if (c->fd == ANET_ERR) {
        zfree(c);
        fprintf(stderr,"Connect: %s\n",err);
        return NULL;
    }
    anetTcpNoDelay(NULL,c->fd);
    c->obuf = sdsempty();
    c->ibuf = sdsempty();
    c->mbulk = -1;
    c->readlen = 0;
    c->written = 0;
    c->totreceived = 0;
    c->state = CLIENT_CONNECTING;
    aeCreateFileEvent(config.el, c->fd, AE_WRITABLE, writeHandler, c);
    config.liveclients++;
    listAddNodeTail(config.clients,c);
    return c;
}

static void createMissingClients(client c) {
    while(config.liveclients < config.numclients) {
        client new = createClient();
        if (!new) continue;
        sdsfree(new->obuf);
        new->obuf = sdsdup(c->obuf);
        if (config.randomkeys) randomizeClientKey(c);
        prepareClientForReply(new,c->replytype);
    }
}

static void showLatencyReport(char *title) {
    int j, seen = 0;
    float perc, reqpersec;

    reqpersec = (float)config.donerequests/((float)config.totlatency/1000);
    if (!config.quiet) {
        printf("====== %s ======\n", title);
        printf("  %d requests completed in %.2f seconds\n", config.donerequests,
            (float)config.totlatency/1000);
        printf("  %d parallel clients\n", config.numclients);
        printf("  %d bytes payload\n", config.datasize);
        printf("  keep alive: %d\n", config.keepalive);
        printf("\n");
        for (j = 0; j <= MAX_LATENCY; j++) {
            if (config.latency[j]) {
                seen += config.latency[j];
                perc = ((float)seen*100)/config.donerequests;
                printf("%.2f%% <= %d milliseconds\n", perc, j);
            }
        }
        printf("%.2f requests per second\n\n", reqpersec);
    } else {
        printf("%s: %.2f requests per second\n", title, reqpersec);
    }
}

static void prepareForBenchmark(void)
{
    memset(config.latency,0,sizeof(int)*(MAX_LATENCY+1));
    config.start = mstime();
    config.donerequests = 0;
}

static void endBenchmark(char *title) {
    config.totlatency = mstime()-config.start;
    showLatencyReport(title);
    freeAllClients();
}

void parseOptions(int argc, char **argv) {
    int i;

    for (i = 1; i < argc; i++) {
        int lastarg = i==argc-1;
        
        if (!strcmp(argv[i],"-c") && !lastarg) {
            config.numclients = atoi(argv[i+1]);
            i++;
        } else if (!strcmp(argv[i],"-n") && !lastarg) {
            config.requests = atoi(argv[i+1]);
            i++;
        } else if (!strcmp(argv[i],"-k") && !lastarg) {
            config.keepalive = atoi(argv[i+1]);
            i++;
        } else if (!strcmp(argv[i],"-h") && !lastarg) {
            char *ip = zmalloc(32);
            if (anetResolve(NULL,argv[i+1],ip) == ANET_ERR) {
                printf("Can't resolve %s\n", argv[i]);
                exit(1);
            }
            config.hostip = ip;
            i++;
        } else if (!strcmp(argv[i],"-p") && !lastarg) {
            config.hostport = atoi(argv[i+1]);
            i++;
        } else if (!strcmp(argv[i],"-d") && !lastarg) {
            config.datasize = atoi(argv[i+1]);
            i++;
            if (config.datasize < 1) config.datasize=1;
            if (config.datasize > 1024*1024) config.datasize = 1024*1024;
        } else if (!strcmp(argv[i],"-r") && !lastarg) {
            config.randomkeys = 1;
            config.randomkeys_keyspacelen = atoi(argv[i+1]);
            if (config.randomkeys_keyspacelen < 0)
                config.randomkeys_keyspacelen = 0;
            i++;
        } else if (!strcmp(argv[i],"-q")) {
            config.quiet = 1;
        } else if (!strcmp(argv[i],"-l")) {
            config.loop = 1;
        } else if (!strcmp(argv[i],"-D")) {
            config.debug = 1;
        } else if (!strcmp(argv[i],"-I")) {
            config.idlemode = 1;
        } else {
            printf("Wrong option '%s' or option argument missing\n\n",argv[i]);
            printf("Usage: redis-benchmark [-h <host>] [-p <port>] [-c <clients>] [-n <requests]> [-k <boolean>]\n\n");
            printf(" -h <hostname>      Server hostname (default 127.0.0.1)\n");
            printf(" -p <hostname>      Server port (default 6379)\n");
            printf(" -c <clients>       Number of parallel connections (default 50)\n");
            printf(" -n <requests>      Total number of requests (default 10000)\n");
            printf(" -d <size>          Data size of SET/GET value in bytes (default 2)\n");
            printf(" -k <boolean>       1=keep alive 0=reconnect (default 1)\n");
            printf(" -r <keyspacelen>   Use random keys for SET/GET/INCR\n");
            printf("  Using this option the benchmark will get/set keys\n");
            printf("  in the form mykey_rand000000012456 instead of constant\n");
            printf("  keys, the <keyspacelen> argument determines the max\n");
            printf("  number of values for the random number. For instance\n");
            printf("  if set to 10 only rand000000000000 - rand000000000009\n");
            printf("  range will be allowed.\n");
            printf(" -q                 Quiet. Just show query/sec values\n");
            printf(" -l                 Loop. Run the tests forever\n");
            printf(" -I                 Idle mode. Just open N idle connections and wait.\n");
            printf(" -D                 Debug mode. more verbose.\n");
            exit(1);
        }
    }
}

int main(int argc, char **argv) {
    client c;

    signal(SIGHUP, SIG_IGN);
    signal(SIGPIPE, SIG_IGN);

    config.debug = 0;
    config.numclients = 50;
    config.requests = 10000;
    config.liveclients = 0;
    config.el = aeCreateEventLoop();
    config.keepalive = 1;
    config.donerequests = 0;
    config.datasize = 3;
    config.randomkeys = 0;
    config.randomkeys_keyspacelen = 0;
    config.quiet = 0;
    config.loop = 0;
    config.idlemode = 0;
    config.latency = NULL;
    config.clients = listCreate();
    config.latency = zmalloc(sizeof(int)*(MAX_LATENCY+1));

    config.hostip = "127.0.0.1";
    config.hostport = 6379;

    parseOptions(argc,argv);

    if (config.keepalive == 0) {
        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");
    }

    if (config.idlemode) {
        printf("Creating %d idle connections and waiting forever (Ctrl+C when done)\n", config.numclients);
        prepareForBenchmark();
        c = createClient();
        if (!c) exit(1);
        c->obuf = sdsempty();
        prepareClientForReply(c,REPLY_RETCODE); /* will never receive it */
        createMissingClients(c);
        aeMain(config.el);
        /* and will wait for every */
    }

    do {
        prepareForBenchmark();
        c = createClient();
        if (!c) exit(1);
        c->obuf = sdscatprintf(c->obuf,"SET foo_rand000000000000 %d\r\n",config.datasize);
        {
            char *data = zmalloc(config.datasize+2);
            memset(data,'x',config.datasize);
            data[config.datasize] = '\r';
            data[config.datasize+1] = '\n';
            c->obuf = sdscatlen(c->obuf,data,config.datasize+2);
        }
        prepareClientForReply(c,REPLY_RETCODE);
        createMissingClients(c);
        aeMain(config.el);
        endBenchmark("SET");

        prepareForBenchmark();
        c = createClient();
        if (!c) exit(1);
        c->obuf = sdscat(c->obuf,"GET foo_rand000000000000\r\n");
        prepareClientForReply(c,REPLY_BULK);
        createMissingClients(c);
        aeMain(config.el);
        endBenchmark("GET");

        prepareForBenchmark();
        c = createClient();
        if (!c) exit(1);
        c->obuf = sdscat(c->obuf,"INCR counter_rand000000000000\r\n");
        prepareClientForReply(c,REPLY_INT);
        createMissingClients(c);
        aeMain(config.el);
        endBenchmark("INCR");

        prepareForBenchmark();
        c = createClient();
        if (!c) exit(1);
        c->obuf = sdscat(c->obuf,"LPUSH mylist 3\r\nbar\r\n");
        prepareClientForReply(c,REPLY_INT);
        createMissingClients(c);
        aeMain(config.el);
        endBenchmark("LPUSH");

        prepareForBenchmark();
        c = createClient();
        if (!c) exit(1);
        c->obuf = sdscat(c->obuf,"LPOP mylist\r\n");
        prepareClientForReply(c,REPLY_BULK);
        createMissingClients(c);
        aeMain(config.el);
        endBenchmark("LPOP");

        prepareForBenchmark();
        c = createClient();
        if (!c) exit(1);
        c->obuf = sdscat(c->obuf,"PING\r\n");
        prepareClientForReply(c,REPLY_RETCODE);
        createMissingClients(c);
        aeMain(config.el);
        endBenchmark("PING");

        prepareForBenchmark();
        c = createClient();
        if (!c) exit(1);
        c->obuf = sdscat(c->obuf,"LPUSH mylist 3\r\nbar\r\n");
        prepareClientForReply(c,REPLY_RETCODE);
        createMissingClients(c);
        aeMain(config.el);
        endBenchmark("LPUSH (again, in order to bench LRANGE)");

        prepareForBenchmark();
        c = createClient();
        if (!c) exit(1);
        c->obuf = sdscat(c->obuf,"LRANGE mylist 0 99\r\n");
        prepareClientForReply(c,REPLY_MBULK);
        createMissingClients(c);
        aeMain(config.el);
        endBenchmark("LRANGE (first 100 elements)");

        prepareForBenchmark();
        c = createClient();
        if (!c) exit(1);
        c->obuf = sdscat(c->obuf,"LRANGE mylist 0 299\r\n");
        prepareClientForReply(c,REPLY_MBULK);
        createMissingClients(c);
        aeMain(config.el);
        endBenchmark("LRANGE (first 300 elements)");

        prepareForBenchmark();
        c = createClient();
        if (!c) exit(1);
        c->obuf = sdscat(c->obuf,"LRANGE mylist 0 449\r\n");
        prepareClientForReply(c,REPLY_MBULK);
        createMissingClients(c);
        aeMain(config.el);
        endBenchmark("LRANGE (first 450 elements)");

        prepareForBenchmark();
        c = createClient();
        if (!c) exit(1);
        c->obuf = sdscat(c->obuf,"LRANGE mylist 0 599\r\n");
        prepareClientForReply(c,REPLY_MBULK);
        createMissingClients(c);
        aeMain(config.el);
        endBenchmark("LRANGE (first 600 elements)");

        printf("\n");
    } while(config.loop);

    return 0;
}
Commit	Line	Data
ed9b544e	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
5f5b9840	31	#include "fmacros.h"
5f5b9840	32
ed9b544e	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
6c4e61b3	51	#define REPLY_MBULK 3
ed9b544e	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 {
58cd7103	62	int debug;
ed9b544e	63	int numclients;
	64	int requests;
	65	int liveclients;
	66	int donerequests;
	67	int keysize;
	68	int datasize;
57172ffb	69	int randomkeys;
ecfaf6da	70	int randomkeys_keyspacelen;
ed9b544e	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;
266373b2	81	int idlemode;
ed9b544e	82	} config;
	83
	84	typedef struct _client {
	85	int state;
	86	int fd;
	87	sds obuf;
	88	sds ibuf;
2fd30952	89	int mbulk; /* Number of elements in an mbulk reply */
ed9b544e	90	int readlen; /* readlen == -1 means read a single line */
58cd7103	91	int totreceived;
ed9b544e	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);
266373b2	140	aeCreateFileEvent(config.el,c->fd, AE_WRITABLE,writeHandler,c);
ed9b544e	141	sdsfree(c->ibuf);
ed9b544e	142	c->ibuf = sdsempty();
89ee361e	143	c->readlen = (c->replytype == REPLY_BULK \|\|
89ee361e	144	c->replytype == REPLY_MBULK) ? -1 : 0;
2fd30952	145	c->mbulk = -1;
ed9b544e	146	c->written = 0;
58cd7103	147	c->totreceived = 0;
ed9b544e	148	c->state = CLIENT_SENDQUERY;
ed9b544e	149	c->start = mstime();
74077975	150	createMissingClients(c);
ed9b544e	151	}
ed9b544e	152
ecfaf6da	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
2fd30952	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
ed9b544e	180	static void clientDone(client c) {
58cd7103	181	static int last_tot_received = 1;
58cd7103	182
ed9b544e	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
58cd7103	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	}
ed9b544e	193	if (config.donerequests == config.requests) {
	194	freeClient(c);
	195	aeStop(config.el);
	196	return;
	197	}
	198	if (config.keepalive) {
	199	resetClient(c);
ecfaf6da	200	if (config.randomkeys) randomizeClientKey(c);
ed9b544e	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	}
58cd7103	229	c->totreceived += nread;
ed9b544e	230	c->ibuf = sdscatlen(c->ibuf,buf,nread);
ed9b544e	231
2fd30952	232	processdata:
6c4e61b3	233	/* Are we waiting for the first line of the command of for sdf
6c4e61b3	234	* count in bulk or multi bulk operations? */
ed9b544e	235	if (c->replytype == REPLY_INT \|\|
ed9b544e	236	c->replytype == REPLY_RETCODE \|\|
2fd30952	237	(c->replytype == REPLY_BULK && c->readlen == -1) \|\|
	238	(c->replytype == REPLY_MBULK && c->readlen == -1) \|\|
	239	(c->replytype == REPLY_MBULK && c->mbulk == -1)) {
ed9b544e	240	char *p;
ed9b544e	241
6c4e61b3	242	/* Check if the first line is complete. This is only true if
6c4e61b3	243	* there is a newline inside the buffer. */
ed9b544e	244	if ((p = strchr(c->ibuf,'\n')) != NULL) {
2fd30952	245	if (c->replytype == REPLY_BULK \|\|
	246	(c->replytype == REPLY_MBULK && c->mbulk != -1))
	247	{
6c4e61b3	248	/* Read the count of a bulk reply (being it a single bulk or
6c4e61b3	249	* a multi bulk reply). "$<count>" for the protocol spec. */
ed9b544e	250	*p = '\0';
ed9b544e	251	*(p-1) = '\0';
4c26a79a	252	c->readlen = atoi(c->ibuf+1)+2;
89ee361e	253	// printf("BULK ATOI: %s\n", c->ibuf+1);
2fd30952	254	/* Handle null bulk reply "$-1" */
ecfaf6da	255	if (c->readlen-2 == -1) {
ed9b544e	256	clientDone(c);
	257	return;
	258	}
2fd30952	259	/* Leave all the rest in the input buffer */
2fd30952	260	c->ibuf = sdsrange(c->ibuf,(p-c->ibuf)+1,-1);
6c4e61b3	261	/* fall through to reach the point where the code will try
6c4e61b3	262	* to check if the bulk reply is complete. */
2fd30952	263	} else if (c->replytype == REPLY_MBULK && c->mbulk == -1) {
6c4e61b3	264	/* Read the count of a multi bulk reply. That is, how many
6c4e61b3	265	* bulk replies we have to read next. "<count>" protocol. /
2fd30952	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	}
89ee361e	274	// printf("%p) %d elements list\n", c, c->mbulk);
2fd30952	275	/* Leave all the rest in the input buffer */
ed9b544e	276	c->ibuf = sdsrange(c->ibuf,(p-c->ibuf)+1,-1);
2fd30952	277	goto processdata;
ed9b544e	278	} else {
	279	c->ibuf = sdstrim(c->ibuf,"\r\n");
	280	clientDone(c);
	281	return;
	282	}
	283	}
	284	}
2fd30952	285	/* bulk read, did we read everything? */
6c4e61b3	286	if (((c->replytype == REPLY_MBULK && c->mbulk != -1) \|\|
	287	(c->replytype == REPLY_BULK)) && c->readlen != -1 &&
	288	(unsigned)c->readlen <= sdslen(c->ibuf))
2fd30952	289	{
89ee361e	290	// printf("BULKSTATUS mbulk:%d readlen:%d sdslen:%d\n",
89ee361e	291	// c->mbulk,c->readlen,sdslen(c->ibuf));
2fd30952	292	if (c->replytype == REPLY_BULK) {
	293	clientDone(c);
	294	} else if (c->replytype == REPLY_MBULK) {
89ee361e	295	// printf("%p) %d (%d)) ",c, c->mbulk, c->readlen);
	296	// fwrite(c->ibuf,c->readlen,1,stdout);
	297	// printf("\n");
2fd30952	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	}
ed9b544e	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) {
61c47ecd	325	if (errno != EPIPE)
61c47ecd	326	fprintf(stderr, "Writing to socket: %s\n", strerror(errno));
ed9b544e	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);
266373b2	333	aeCreateFileEvent(config.el,c->fd,AE_READABLE,readHandler,c);
ed9b544e	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();
2fd30952	352	c->mbulk = -1;
ed9b544e	353	c->readlen = 0;
ed9b544e	354	c->written = 0;
58cd7103	355	c->totreceived = 0;
ed9b544e	356	c->state = CLIENT_CONNECTING;
266373b2	357	aeCreateFileEvent(config.el, c->fd, AE_WRITABLE, writeHandler, c);
ed9b544e	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);
ecfaf6da	369	if (config.randomkeys) randomizeClientKey(c);
b892cabe	370	prepareClientForReply(new,c->replytype);
ed9b544e	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 > 10241024) config.datasize = 10241024;
ecfaf6da	444	} else if (!strcmp(argv[i],"-r") && !lastarg) {
57172ffb	445	config.randomkeys = 1;
ecfaf6da	446	config.randomkeys_keyspacelen = atoi(argv[i+1]);
	447	if (config.randomkeys_keyspacelen < 0)
	448	config.randomkeys_keyspacelen = 0;
	449	i++;
ed9b544e	450	} else if (!strcmp(argv[i],"-q")) {
	451	config.quiet = 1;
	452	} else if (!strcmp(argv[i],"-l")) {
	453	config.loop = 1;
58cd7103	454	} else if (!strcmp(argv[i],"-D")) {
58cd7103	455	config.debug = 1;
266373b2	456	} else if (!strcmp(argv[i],"-I")) {
266373b2	457	config.idlemode = 1;
ed9b544e	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");
ecfaf6da	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");
ed9b544e	474	printf(" -q Quiet. Just show query/sec values\n");
ed9b544e	475	printf(" -l Loop. Run the tests forever\n");
266373b2	476	printf(" -I Idle mode. Just open N idle connections and wait.\n");
58cd7103	477	printf(" -D Debug mode. more verbose.\n");
ed9b544e	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
58cd7103	489	config.debug = 0;
ed9b544e	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;
57172ffb	497	config.randomkeys = 0;
ecfaf6da	498	config.randomkeys_keyspacelen = 0;
ed9b544e	499	config.quiet = 0;
ed9b544e	500	config.loop = 0;
266373b2	501	config.idlemode = 0;
ed9b544e	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) {
c3251497	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");
ed9b544e	513	}
ed9b544e	514
266373b2	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
ed9b544e	527	do {
ed9b544e	528	prepareForBenchmark();
	529	c = createClient();
	530	if (!c) exit(1);
57172ffb	531	c->obuf = sdscatprintf(c->obuf,"SET foo_rand000000000000 %d\r\n",config.datasize);
ed9b544e	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	}
2fd30952	539	prepareClientForReply(c,REPLY_RETCODE);
ed9b544e	540	createMissingClients(c);
	541	aeMain(config.el);
	542	endBenchmark("SET");
	543
	544	prepareForBenchmark();
	545	c = createClient();
	546	if (!c) exit(1);
57172ffb	547	c->obuf = sdscat(c->obuf,"GET foo_rand000000000000\r\n");
2fd30952	548	prepareClientForReply(c,REPLY_BULK);
ed9b544e	549	createMissingClients(c);
	550	aeMain(config.el);
	551	endBenchmark("GET");
	552
	553	prepareForBenchmark();
	554	c = createClient();
	555	if (!c) exit(1);
57172ffb	556	c->obuf = sdscat(c->obuf,"INCR counter_rand000000000000\r\n");
2fd30952	557	prepareClientForReply(c,REPLY_INT);
ed9b544e	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");
2fd30952	566	prepareClientForReply(c,REPLY_INT);
ed9b544e	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");
2fd30952	575	prepareClientForReply(c,REPLY_BULK);
ed9b544e	576	createMissingClients(c);
	577	aeMain(config.el);
	578	endBenchmark("LPOP");
	579
9f3c422c	580	prepareForBenchmark();
	581	c = createClient();
	582	if (!c) exit(1);
	583	c->obuf = sdscat(c->obuf,"PING\r\n");
2fd30952	584	prepareClientForReply(c,REPLY_RETCODE);
9f3c422c	585	createMissingClients(c);
	586	aeMain(config.el);
	587	endBenchmark("PING");
	588
2fd30952	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
ccb5332c	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
cc30e368	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
ed9b544e	634	printf("\n");
	635	} while(config.loop);
	636
	637	return 0;
	638	}