src/redis-benchmark.c

/* Redis benchmark utility.
 *
 * Copyright (c) 2009-2010, 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 "hiredis.h"
#include "sds.h"
#include "adlist.h"
#include "zmalloc.h"

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

#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;
    char *hostsocket;
    int keepalive;
    long long start;
    long long totlatency;
    long long *latency;
    char *title;
    list *clients;
    int quiet;
    int loop;
    int idlemode;
} config;

typedef struct _client {
    redisContext *context;
    int state;
    sds obuf;
    char *randptr;
    unsigned int written; /* bytes of 'obuf' already written */
    long long start; /* start time of a request */
    long long latency; /* request latency */
} *client;

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

/* Implementation */
static long long ustime(void) {
    struct timeval tv;
    long long ust;

    gettimeofday(&tv, NULL);
    ust = ((long)tv.tv_sec)*1000000;
    ust += tv.tv_usec;
    return ust;
}

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->context->fd,AE_WRITABLE);
    aeDeleteFileEvent(config.el,c->context->fd,AE_READABLE);
    redisFree(c->context);
    sdsfree(c->obuf);
    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->context->fd,AE_WRITABLE);
    aeDeleteFileEvent(config.el,c->context->fd,AE_READABLE);
    aeCreateFileEvent(config.el,c->context->fd,AE_WRITABLE,writeHandler,c);
    c->written = 0;
    c->state = CLIENT_SENDQUERY;
    c->start = ustime();
    c->latency = -1;
}

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

    if (c->randptr == NULL) return;

    /* Check if we have to randomize (only once per connection) */
    if (c->randptr == (void*)-1) {
        p = strstr(c->obuf,":rand:");
        if (!p) {
            c->randptr = NULL;
            return;
        } else {
            newline = strstr(p,"\r\n");
            assert(newline-(p+6) == 12); /* 12 chars for randomness */
            c->randptr = p+6;
        }
    }

    /* Set random number in output buffer */
    r = random() % config.randomkeys_keyspacelen;
    snprintf(buf,sizeof(buf),"%012ld",r);
    memcpy(c->randptr,buf,12);
}

static void clientDone(client c) {
    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) {
    client c = privdata;
    void *reply = NULL;
    REDIS_NOTUSED(el);
    REDIS_NOTUSED(fd);
    REDIS_NOTUSED(mask);

    /* Calculate latency only for the first read event. This means that the
     * server already sent the reply and we need to parse it. Parsing overhead
     * is not part of the latency, so calculate it only once, here. */
    if (c->latency < 0) c->latency = ustime()-(c->start);

    if (redisBufferRead(c->context) != REDIS_OK) {
        fprintf(stderr,"Error: %s\n",c->context->errstr);
        exit(1);
    } else {
        if (redisGetReply(c->context,&reply) != REDIS_OK) {
            fprintf(stderr,"Error: %s\n",c->context->errstr);
            exit(1);
        }
        if (reply != NULL) {
            if (reply == (void*)REDIS_REPLY_ERROR) {
                fprintf(stderr,"Unexpected error reply, exiting...\n");
                exit(1);
            }

            if (config.donerequests < config.requests)
                config.latency[config.donerequests++] = c->latency;
            clientDone(c);
        }
    }
}

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 = ustime();
        c->latency = -1;
    }
    if (sdslen(c->obuf) > c->written) {
        void *ptr = c->obuf+c->written;
        int nwritten = write(c->context->fd,ptr,sdslen(c->obuf)-c->written);
        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->context->fd,AE_WRITABLE);
            aeCreateFileEvent(config.el,c->context->fd,AE_READABLE,readHandler,c);
            c->state = CLIENT_READREPLY;
        }
    }
}

static client createClient() {
    client c = zmalloc(sizeof(struct _client));
    if (config.hostsocket == NULL) {
        c->context = redisConnectNonBlock(config.hostip,config.hostport);
    } else {
        c->context = redisConnectUnixNonBlock(config.hostsocket);
    }
    if (c->context->err) {
        fprintf(stderr,"Could not connect to Redis at ");
        if (config.hostsocket == NULL)
            fprintf(stderr,"%s:%d: %s\n",config.hostip,config.hostport,c->context->errstr);
        else
            fprintf(stderr,"%s: %s\n",config.hostsocket,c->context->errstr);
        exit(1);
    }
    c->state = CLIENT_CONNECTING;
    c->obuf = NULL;
    c->randptr = (void*)-1;
    c->written = 0;
    redisSetReplyObjectFunctions(c->context,NULL);
    aeCreateFileEvent(config.el,c->context->fd,AE_WRITABLE,writeHandler,c);
    listAddNodeTail(config.clients,c);
    config.liveclients++;
    return c;
}

static void createMissingClients(client c) {
    int n = 0;

    while(config.liveclients < config.numclients) {
        client new = createClient();
        new->obuf = sdsdup(c->obuf);
        if (config.randomkeys) randomizeClientKey(c);

        /* Listen backlog is quite limited on most systems */
        if (++n > 64) {
            usleep(50000);
            n = 0;
        }
    }
}

static int compareLatency(const void *a, const void *b) {
    return (*(long long*)a)-(*(long long*)b);
}

static void showLatencyReport(void) {
    int i, curlat = 0;
    float perc, reqpersec;

    reqpersec = (float)config.donerequests/((float)config.totlatency/1000);
    if (!config.quiet) {
        printf("====== %s ======\n", config.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");

        qsort(config.latency,config.requests,sizeof(long long),compareLatency);
        for (i = 0; i < config.requests; i++) {
            if (config.latency[i]/1000 != curlat || i == (config.requests-1)) {
                curlat = config.latency[i]/1000;
                perc = ((float)(i+1)*100)/config.requests;
                printf("%.2f%% <= %d milliseconds\n", perc, curlat);
            }
        }
        printf("%.2f requests per second\n\n", reqpersec);
    } else {
        printf("%s: %.2f requests per second\n", config.title, reqpersec);
    }
}

static void benchmark(char *title, char *cmd, int len) {
    client c;

    config.title = title;
    config.donerequests = 0;

    c = createClient();
    c->obuf = sdsnewlen(cmd,len);
    createMissingClients(c);

    config.start = mstime();
    aeMain(config.el);
    config.totlatency = mstime()-config.start;

    showLatencyReport();
    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) {
            config.hostip = argv[i+1];
            i++;
        } else if (!strcmp(argv[i],"-p") && !lastarg) {
            config.hostport = atoi(argv[i+1]);
            i++;
        } else if (!strcmp(argv[i],"-s") && !lastarg) {
            config.hostsocket = 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 <port>          Server port (default 6379)\n");
            printf(" -s <socket>        Server socket (overrides host and port)\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, random values for SADD\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 showThroughput(struct aeEventLoop *eventLoop, long long id, void *clientData) {
    REDIS_NOTUSED(eventLoop);
    REDIS_NOTUSED(id);
    REDIS_NOTUSED(clientData);

    float dt = (float)(mstime()-config.start)/1000.0;
    float rps = (float)config.donerequests/dt;
    printf("%s: %.2f\r", config.title, rps);
    fflush(stdout);
    return 250; /* every 250ms */
}

int main(int argc, char **argv) {
    int i;
    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();
    aeCreateTimeEvent(config.el,1,showThroughput,NULL,NULL);
    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.hostip = "127.0.0.1";
    config.hostport = 6379;
    config.hostsocket = NULL;

    parseOptions(argc,argv);
    config.latency = zmalloc(sizeof(long long)*config.requests);

    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);
        c = createClient(0); /* will never receive a reply */
        c->obuf = sdsempty();
        createMissingClients(c);
        aeMain(config.el);
        /* and will wait for every */
    }

    do {
        char *data, *cmd;
        int len;

        data = zmalloc(config.datasize+1);
        memset(data,'x',config.datasize);
        data[config.datasize] = '\0';

        benchmark("PING (inline)","PING\r\n",6);

        len = redisFormatCommand(&cmd,"PING");
        benchmark("PING",cmd,len);
        free(cmd);

        const char *argv[21];
        argv[0] = "MSET";
        for (i = 1; i < 21; i += 2) {
            argv[i] = "foo:rand:000000000000";
            argv[i+1] = data;
        }
        len = redisFormatCommandArgv(&cmd,21,argv,NULL);
        benchmark("MSET (10 keys)",cmd,len);
        free(cmd);

        len = redisFormatCommand(&cmd,"SET foo:rand:000000000000 %s",data);
        benchmark("SET",cmd,len);
        free(cmd);

        len = redisFormatCommand(&cmd,"GET foo:rand:000000000000");
        benchmark("GET",cmd,len);
        free(cmd);

        len = redisFormatCommand(&cmd,"INCR counter:rand:000000000000");
        benchmark("INCR",cmd,len);
        free(cmd);

        len = redisFormatCommand(&cmd,"LPUSH mylist %s",data);
        benchmark("LPUSH",cmd,len);
        free(cmd);

        len = redisFormatCommand(&cmd,"LPOP mylist");
        benchmark("LPOP",cmd,len);
        free(cmd);

        len = redisFormatCommand(&cmd,"SADD myset counter:rand:000000000000");
        benchmark("SADD",cmd,len);
        free(cmd);

        len = redisFormatCommand(&cmd,"SPOP myset");
        benchmark("SPOP",cmd,len);
        free(cmd);

        len = redisFormatCommand(&cmd,"LPUSH mylist %s",data);
        benchmark("LPUSH (again, in order to bench LRANGE)",cmd,len);
        free(cmd);

        len = redisFormatCommand(&cmd,"LRANGE mylist 0 99");
        benchmark("LRANGE (first 100 elements)",cmd,len);
        free(cmd);

        len = redisFormatCommand(&cmd,"LRANGE mylist 0 299");
        benchmark("LRANGE (first 300 elements)",cmd,len);
        free(cmd);

        len = redisFormatCommand(&cmd,"LRANGE mylist 0 449");
        benchmark("LRANGE (first 450 elements)",cmd,len);
        free(cmd);

        len = redisFormatCommand(&cmd,"LRANGE mylist 0 599");
        benchmark("LRANGE (first 600 elements)",cmd,len);
        free(cmd);

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

    return 0;
}
Commit	Line	Data
	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 CLIENT_CONNECTING 0
	49	#define CLIENT_SENDQUERY 1
	50	#define CLIENT_READREPLY 2
	51
	52	#define REDIS_NOTUSED(V) ((void) V)
	53
	54	static struct config {
	55	int debug;
	56	int numclients;
	57	int requests;
	58	int liveclients;
	59	int donerequests;
	60	int keysize;
	61	int datasize;
	62	int randomkeys;
	63	int randomkeys_keyspacelen;
	64	aeEventLoop *el;
	65	char *hostip;
	66	int hostport;
	67	char *hostsocket;
	68	int keepalive;
	69	long long start;
	70	long long totlatency;
	71	long long *latency;
	72	char *title;
	73	list *clients;
	74	int quiet;
	75	int loop;
	76	int idlemode;
	77	} config;
	78
	79	typedef struct _client {
	80	redisContext *context;
	81	int state;
	82	sds obuf;
	83	char *randptr;
	84	unsigned int written; /* bytes of 'obuf' already written */
	85	long long start; /* start time of a request */
	86	long long latency; /* request latency */
	87	} *client;
	88
	89	/* Prototypes */
	90	static void writeHandler(aeEventLoop el, int fd, void privdata, int mask);
	91	static void createMissingClients(client c);
	92
	93	/* Implementation */
	94	static long long ustime(void) {
	95	struct timeval tv;
	96	long long ust;
	97
	98	gettimeofday(&tv, NULL);
	99	ust = ((long)tv.tv_sec)*1000000;
	100	ust += tv.tv_usec;
	101	return ust;
	102	}
	103
	104	static long long mstime(void) {
	105	struct timeval tv;
	106	long long mst;
	107
	108	gettimeofday(&tv, NULL);
	109	mst = ((long)tv.tv_sec)*1000;
	110	mst += tv.tv_usec/1000;
	111	return mst;
	112	}
	113
	114	static void freeClient(client c) {
	115	listNode *ln;
	116	aeDeleteFileEvent(config.el,c->context->fd,AE_WRITABLE);
	117	aeDeleteFileEvent(config.el,c->context->fd,AE_READABLE);
	118	redisFree(c->context);
	119	sdsfree(c->obuf);
	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->context->fd,AE_WRITABLE);
	139	aeDeleteFileEvent(config.el,c->context->fd,AE_READABLE);
	140	aeCreateFileEvent(config.el,c->context->fd,AE_WRITABLE,writeHandler,c);
	141	c->written = 0;
	142	c->state = CLIENT_SENDQUERY;
	143	c->start = ustime();
	144	c->latency = -1;
	145	}
	146
	147	static void randomizeClientKey(client c) {
	148	char p, newline;
	149	char buf[32];
	150	long r;
	151
	152	if (c->randptr == NULL) return;
	153
	154	/* Check if we have to randomize (only once per connection) */
	155	if (c->randptr == (void*)-1) {
	156	p = strstr(c->obuf,":rand:");
	157	if (!p) {
	158	c->randptr = NULL;
	159	return;
	160	} else {
	161	newline = strstr(p,"\r\n");
	162	assert(newline-(p+6) == 12); /* 12 chars for randomness */
	163	c->randptr = p+6;
	164	}
	165	}
	166
	167	/* Set random number in output buffer */
	168	r = random() % config.randomkeys_keyspacelen;
	169	snprintf(buf,sizeof(buf),"%012ld",r);
	170	memcpy(c->randptr,buf,12);
	171	}
	172
	173	static void clientDone(client c) {
	174	if (config.donerequests == config.requests) {
	175	freeClient(c);
	176	aeStop(config.el);
	177	return;
	178	}
	179	if (config.keepalive) {
	180	resetClient(c);
	181	if (config.randomkeys) randomizeClientKey(c);
	182	} else {
	183	config.liveclients--;
	184	createMissingClients(c);
	185	config.liveclients++;
	186	freeClient(c);
	187	}
	188	}
	189
	190	static void readHandler(aeEventLoop el, int fd, void privdata, int mask) {
	191	client c = privdata;
	192	void *reply = NULL;
	193	REDIS_NOTUSED(el);
	194	REDIS_NOTUSED(fd);
	195	REDIS_NOTUSED(mask);
	196
	197	/* Calculate latency only for the first read event. This means that the
	198	* server already sent the reply and we need to parse it. Parsing overhead
	199	* is not part of the latency, so calculate it only once, here. */
	200	if (c->latency < 0) c->latency = ustime()-(c->start);
	201
	202	if (redisBufferRead(c->context) != REDIS_OK) {
	203	fprintf(stderr,"Error: %s\n",c->context->errstr);
	204	exit(1);
	205	} else {
	206	if (redisGetReply(c->context,&reply) != REDIS_OK) {
	207	fprintf(stderr,"Error: %s\n",c->context->errstr);
	208	exit(1);
	209	}
	210	if (reply != NULL) {
	211	if (reply == (void*)REDIS_REPLY_ERROR) {
	212	fprintf(stderr,"Unexpected error reply, exiting...\n");
	213	exit(1);
	214	}
	215
	216	if (config.donerequests < config.requests)
	217	config.latency[config.donerequests++] = c->latency;
	218	clientDone(c);
	219	}
	220	}
	221	}
	222
	223	static void writeHandler(aeEventLoop el, int fd, void privdata, int mask) {
	224	client c = privdata;
	225	REDIS_NOTUSED(el);
	226	REDIS_NOTUSED(fd);
	227	REDIS_NOTUSED(mask);
	228
	229	if (c->state == CLIENT_CONNECTING) {
	230	c->state = CLIENT_SENDQUERY;
	231	c->start = ustime();
	232	c->latency = -1;
	233	}
	234	if (sdslen(c->obuf) > c->written) {
	235	void *ptr = c->obuf+c->written;
	236	int nwritten = write(c->context->fd,ptr,sdslen(c->obuf)-c->written);
	237	if (nwritten == -1) {
	238	if (errno != EPIPE)
	239	fprintf(stderr, "Writing to socket: %s\n", strerror(errno));
	240	freeClient(c);
	241	return;
	242	}
	243	c->written += nwritten;
	244	if (sdslen(c->obuf) == c->written) {
	245	aeDeleteFileEvent(config.el,c->context->fd,AE_WRITABLE);
	246	aeCreateFileEvent(config.el,c->context->fd,AE_READABLE,readHandler,c);
	247	c->state = CLIENT_READREPLY;
	248	}
	249	}
	250	}
	251
	252	static client createClient() {
	253	client c = zmalloc(sizeof(struct _client));
	254	if (config.hostsocket == NULL) {
	255	c->context = redisConnectNonBlock(config.hostip,config.hostport);
	256	} else {
	257	c->context = redisConnectUnixNonBlock(config.hostsocket);
	258	}
	259	if (c->context->err) {
	260	fprintf(stderr,"Could not connect to Redis at ");
	261	if (config.hostsocket == NULL)
	262	fprintf(stderr,"%s:%d: %s\n",config.hostip,config.hostport,c->context->errstr);
	263	else
	264	fprintf(stderr,"%s: %s\n",config.hostsocket,c->context->errstr);
	265	exit(1);
	266	}
	267	c->state = CLIENT_CONNECTING;
	268	c->obuf = NULL;
	269	c->randptr = (void*)-1;
	270	c->written = 0;
	271	redisSetReplyObjectFunctions(c->context,NULL);
	272	aeCreateFileEvent(config.el,c->context->fd,AE_WRITABLE,writeHandler,c);
	273	listAddNodeTail(config.clients,c);
	274	config.liveclients++;
	275	return c;
	276	}
	277
	278	static void createMissingClients(client c) {
	279	int n = 0;
	280
	281	while(config.liveclients < config.numclients) {
	282	client new = createClient();
	283	new->obuf = sdsdup(c->obuf);
	284	if (config.randomkeys) randomizeClientKey(c);
	285
	286	/* Listen backlog is quite limited on most systems */
	287	if (++n > 64) {
	288	usleep(50000);
	289	n = 0;
	290	}
	291	}
	292	}
	293
	294	static int compareLatency(const void a, const void b) {
	295	return ((long long)a)-((long long)b);
	296	}
	297
	298	static void showLatencyReport(void) {
	299	int i, curlat = 0;
	300	float perc, reqpersec;
	301
	302	reqpersec = (float)config.donerequests/((float)config.totlatency/1000);
	303	if (!config.quiet) {
	304	printf("====== %s ======\n", config.title);
	305	printf(" %d requests completed in %.2f seconds\n", config.donerequests,
	306	(float)config.totlatency/1000);
	307	printf(" %d parallel clients\n", config.numclients);
	308	printf(" %d bytes payload\n", config.datasize);
	309	printf(" keep alive: %d\n", config.keepalive);
	310	printf("\n");
	311
	312	qsort(config.latency,config.requests,sizeof(long long),compareLatency);
	313	for (i = 0; i < config.requests; i++) {
	314	if (config.latency[i]/1000 != curlat \|\| i == (config.requests-1)) {
	315	curlat = config.latency[i]/1000;
	316	perc = ((float)(i+1)*100)/config.requests;
	317	printf("%.2f%% <= %d milliseconds\n", perc, curlat);
	318	}
	319	}
	320	printf("%.2f requests per second\n\n", reqpersec);
	321	} else {
	322	printf("%s: %.2f requests per second\n", config.title, reqpersec);
	323	}
	324	}
	325
	326	static void benchmark(char title, char cmd, int len) {
	327	client c;
	328
	329	config.title = title;
	330	config.donerequests = 0;
	331
	332	c = createClient();
	333	c->obuf = sdsnewlen(cmd,len);
	334	createMissingClients(c);
	335
	336	config.start = mstime();
	337	aeMain(config.el);
	338	config.totlatency = mstime()-config.start;
	339
	340	showLatencyReport();
	341	freeAllClients();
	342	}
	343
	344	void parseOptions(int argc, char **argv) {
	345	int i;
	346
	347	for (i = 1; i < argc; i++) {
	348	int lastarg = i==argc-1;
	349
	350	if (!strcmp(argv[i],"-c") && !lastarg) {
	351	config.numclients = atoi(argv[i+1]);
	352	i++;
	353	} else if (!strcmp(argv[i],"-n") && !lastarg) {
	354	config.requests = atoi(argv[i+1]);
	355	i++;
	356	} else if (!strcmp(argv[i],"-k") && !lastarg) {
	357	config.keepalive = atoi(argv[i+1]);
	358	i++;
	359	} else if (!strcmp(argv[i],"-h") && !lastarg) {
	360	config.hostip = argv[i+1];
	361	i++;
	362	} else if (!strcmp(argv[i],"-p") && !lastarg) {
	363	config.hostport = atoi(argv[i+1]);
	364	i++;
	365	} else if (!strcmp(argv[i],"-s") && !lastarg) {
	366	config.hostsocket = argv[i+1];
	367	i++;
	368	} else if (!strcmp(argv[i],"-d") && !lastarg) {
	369	config.datasize = atoi(argv[i+1]);
	370	i++;
	371	if (config.datasize < 1) config.datasize=1;
	372	if (config.datasize > 10241024) config.datasize = 10241024;
	373	} else if (!strcmp(argv[i],"-r") && !lastarg) {
	374	config.randomkeys = 1;
	375	config.randomkeys_keyspacelen = atoi(argv[i+1]);
	376	if (config.randomkeys_keyspacelen < 0)
	377	config.randomkeys_keyspacelen = 0;
	378	i++;
	379	} else if (!strcmp(argv[i],"-q")) {
	380	config.quiet = 1;
	381	} else if (!strcmp(argv[i],"-l")) {
	382	config.loop = 1;
	383	} else if (!strcmp(argv[i],"-D")) {
	384	config.debug = 1;
	385	} else if (!strcmp(argv[i],"-I")) {
	386	config.idlemode = 1;
	387	} else {
	388	printf("Wrong option '%s' or option argument missing\n\n",argv[i]);
	389	printf("Usage: redis-benchmark [-h <host>] [-p <port>] [-c <clients>] [-n <requests]> [-k <boolean>]\n\n");
	390	printf(" -h <hostname> Server hostname (default 127.0.0.1)\n");
	391	printf(" -p <port> Server port (default 6379)\n");
	392	printf(" -s <socket> Server socket (overrides host and port)\n");
	393	printf(" -c <clients> Number of parallel connections (default 50)\n");
	394	printf(" -n <requests> Total number of requests (default 10000)\n");
	395	printf(" -d <size> Data size of SET/GET value in bytes (default 2)\n");
	396	printf(" -k <boolean> 1=keep alive 0=reconnect (default 1)\n");
	397	printf(" -r <keyspacelen> Use random keys for SET/GET/INCR, random values for SADD\n");
	398	printf(" Using this option the benchmark will get/set keys\n");
	399	printf(" in the form mykey_rand000000012456 instead of constant\n");
	400	printf(" keys, the <keyspacelen> argument determines the max\n");
	401	printf(" number of values for the random number. For instance\n");
	402	printf(" if set to 10 only rand000000000000 - rand000000000009\n");
	403	printf(" range will be allowed.\n");
	404	printf(" -q Quiet. Just show query/sec values\n");
	405	printf(" -l Loop. Run the tests forever\n");
	406	printf(" -I Idle mode. Just open N idle connections and wait.\n");
	407	printf(" -D Debug mode. more verbose.\n");
	408	exit(1);
	409	}
	410	}
	411	}
	412
	413	int showThroughput(struct aeEventLoop eventLoop, long long id, void clientData) {
	414	REDIS_NOTUSED(eventLoop);
	415	REDIS_NOTUSED(id);
	416	REDIS_NOTUSED(clientData);
	417
	418	float dt = (float)(mstime()-config.start)/1000.0;
	419	float rps = (float)config.donerequests/dt;
	420	printf("%s: %.2f\r", config.title, rps);
	421	fflush(stdout);
	422	return 250; /* every 250ms */
	423	}
	424
	425	int main(int argc, char **argv) {
	426	int i;
	427	client c;
	428
	429	signal(SIGHUP, SIG_IGN);
	430	signal(SIGPIPE, SIG_IGN);
	431
	432	config.debug = 0;
	433	config.numclients = 50;
	434	config.requests = 10000;
	435	config.liveclients = 0;
	436	config.el = aeCreateEventLoop();
	437	aeCreateTimeEvent(config.el,1,showThroughput,NULL,NULL);
	438	config.keepalive = 1;
	439	config.donerequests = 0;
	440	config.datasize = 3;
	441	config.randomkeys = 0;
	442	config.randomkeys_keyspacelen = 0;
	443	config.quiet = 0;
	444	config.loop = 0;
	445	config.idlemode = 0;
	446	config.latency = NULL;
	447	config.clients = listCreate();
	448	config.hostip = "127.0.0.1";
	449	config.hostport = 6379;
	450	config.hostsocket = NULL;
	451
	452	parseOptions(argc,argv);
	453	config.latency = zmalloc(sizeof(long long)*config.requests);
	454
	455	if (config.keepalive == 0) {
	456	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");
	457	}
	458
	459	if (config.idlemode) {
	460	printf("Creating %d idle connections and waiting forever (Ctrl+C when done)\n", config.numclients);
	461	c = createClient(0); /* will never receive a reply */
	462	c->obuf = sdsempty();
	463	createMissingClients(c);
	464	aeMain(config.el);
	465	/* and will wait for every */
	466	}
	467
	468	do {
	469	char data, cmd;
	470	int len;
	471
	472	data = zmalloc(config.datasize+1);
	473	memset(data,'x',config.datasize);
	474	data[config.datasize] = '\0';
	475
	476	benchmark("PING (inline)","PING\r\n",6);
	477
	478	len = redisFormatCommand(&cmd,"PING");
	479	benchmark("PING",cmd,len);
	480	free(cmd);
	481
	482	const char *argv[21];
	483	argv[0] = "MSET";
	484	for (i = 1; i < 21; i += 2) {
	485	argv[i] = "foo:rand:000000000000";
	486	argv[i+1] = data;
	487	}
	488	len = redisFormatCommandArgv(&cmd,21,argv,NULL);
	489	benchmark("MSET (10 keys)",cmd,len);
	490	free(cmd);
	491
	492	len = redisFormatCommand(&cmd,"SET foo:rand:000000000000 %s",data);
	493	benchmark("SET",cmd,len);
	494	free(cmd);
	495
	496	len = redisFormatCommand(&cmd,"GET foo:rand:000000000000");
	497	benchmark("GET",cmd,len);
	498	free(cmd);
	499
	500	len = redisFormatCommand(&cmd,"INCR counter:rand:000000000000");
	501	benchmark("INCR",cmd,len);
	502	free(cmd);
	503
	504	len = redisFormatCommand(&cmd,"LPUSH mylist %s",data);
	505	benchmark("LPUSH",cmd,len);
	506	free(cmd);
	507
	508	len = redisFormatCommand(&cmd,"LPOP mylist");
	509	benchmark("LPOP",cmd,len);
	510	free(cmd);
	511
	512	len = redisFormatCommand(&cmd,"SADD myset counter:rand:000000000000");
	513	benchmark("SADD",cmd,len);
	514	free(cmd);
	515
	516	len = redisFormatCommand(&cmd,"SPOP myset");
	517	benchmark("SPOP",cmd,len);
	518	free(cmd);
	519
	520	len = redisFormatCommand(&cmd,"LPUSH mylist %s",data);
	521	benchmark("LPUSH (again, in order to bench LRANGE)",cmd,len);
	522	free(cmd);
	523
	524	len = redisFormatCommand(&cmd,"LRANGE mylist 0 99");
	525	benchmark("LRANGE (first 100 elements)",cmd,len);
	526	free(cmd);
	527
	528	len = redisFormatCommand(&cmd,"LRANGE mylist 0 299");
	529	benchmark("LRANGE (first 300 elements)",cmd,len);
	530	free(cmd);
	531
	532	len = redisFormatCommand(&cmd,"LRANGE mylist 0 449");
	533	benchmark("LRANGE (first 450 elements)",cmd,len);
	534	free(cmd);
	535
	536	len = redisFormatCommand(&cmd,"LRANGE mylist 0 599");
	537	benchmark("LRANGE (first 600 elements)",cmd,len);
	538	free(cmd);
	539
	540	printf("\n");
	541	} while(config.loop);
	542
	543	return 0;
	544	}