[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 <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 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 numclients;
    int requests;
    int liveclients;
    int donerequests;
    int keysize;
    int datasize;
    aeEventLoop *el;
    char *hostip;
    int hostport;
    int keepalive;
    long long start;
    long long totlatency;
    int *latency;
    list *clients;
    int quiet;
    int loop;
} config;

typedef struct _client {
    int state;
    int fd;
    sds obuf;
    sds ibuf;
    int readlen;        /* readlen == -1 means read a single line */
    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,NULL);
    sdsfree(c->ibuf);
    c->ibuf = sdsempty();
    c->readlen = (c->replytype == REPLY_BULK) ? -1 : 0;
    c->written = 0;
    c->state = CLIENT_SENDQUERY;
    c->start = mstime();
}

static void clientDone(client c) {
    long long latency;
    config.donerequests ++;
    latency = mstime() - c->start;
    if (latency > MAX_LATENCY) latency = MAX_LATENCY;
    config.latency[latency]++;

    if (config.donerequests == config.requests) {
        freeClient(c);
        aeStop(config.el);
        return;
    }
    if (config.keepalive) {
        resetClient(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->ibuf = sdscatlen(c->ibuf,buf,nread);

    if (c->replytype == REPLY_INT ||
        c->replytype == REPLY_RETCODE ||
        (c->replytype == REPLY_BULK && c->readlen == -1)) {
        char *p;

        if ((p = strchr(c->ibuf,'\n')) != NULL) {
            if (c->replytype == REPLY_BULK) {
                *p = '\0';
                *(p-1) = '\0';
                c->readlen = atoi(c->ibuf+1)+2;
                if (c->readlen == -1) {
                    clientDone(c);
                    return;
                }
                c->ibuf = sdsrange(c->ibuf,(p-c->ibuf)+1,-1);
            } else {
                c->ibuf = sdstrim(c->ibuf,"\r\n");
                clientDone(c);
                return;
            }
        }
    }
    /* bulk read */
    if ((unsigned)c->readlen == sdslen(c->ibuf))
        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 = 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) {
            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,NULL);
            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->readlen = 0;
    c->written = 0;
    c->state = CLIENT_CONNECTING;
    aeCreateFileEvent(config.el, c->fd, AE_WRITABLE, writeHandler, c, NULL);
    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);
        new->replytype = c->replytype;
        if (c->replytype == REPLY_BULK)
            new->readlen = -1;
    }
}

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],"-q")) {
            config.quiet = 1;
        } else if (!strcmp(argv[i],"-l")) {
            config.loop = 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(" -q                 Quiet. Just show query/sec values\n");
            printf(" -l                 Loop. Run the tests forever\n");
            exit(1);
        }
    }
}

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

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

    config.numclients = 50;
    config.requests = 10000;
    config.liveclients = 0;
    config.el = aeCreateEventLoop();
    config.keepalive = 1;
    config.donerequests = 0;
    config.datasize = 3;
    config.quiet = 0;
    config.loop = 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' in order to use a lot of clients/requests\n");
    }

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

        prepareForBenchmark();
        c = createClient();
        if (!c) exit(1);
        c->obuf = sdscatprintf(c->obuf,"SET foo %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);
        }
        c->replytype = REPLY_RETCODE;
        createMissingClients(c);
        aeMain(config.el);
        endBenchmark("SET");

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

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

        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
	31	#include <stdio.h>
	32	#include <string.h>
	33	#include <stdlib.h>
	34	#include <unistd.h>
	35	#include <errno.h>
	36	#include <sys/time.h>
	37	#include <signal.h>
	38	#include <assert.h>
	39
	40	#include "ae.h"
	41	#include "anet.h"
	42	#include "sds.h"
	43	#include "adlist.h"
	44	#include "zmalloc.h"
	45
	46	#define REPLY_INT 0
	47	#define REPLY_RETCODE 1
	48	#define REPLY_BULK 2
	49
	50	#define CLIENT_CONNECTING 0
	51	#define CLIENT_SENDQUERY 1
	52	#define CLIENT_READREPLY 2
	53
	54	#define MAX_LATENCY 5000
	55
	56	#define REDIS_NOTUSED(V) ((void) V)
	57
	58	static struct config {
	59	int numclients;
	60	int requests;
	61	int liveclients;
	62	int donerequests;
	63	int keysize;
	64	int datasize;
65	aeEventLoop *el;
66	char *hostip;
67	int hostport;
68	int keepalive;
69	long long start;
70	long long totlatency;
71	int *latency;
72	list *clients;
73	int quiet;
74	int loop;
75	} config;
76
77	typedef struct _client {
78	int state;
79	int fd;
80	sds obuf;
81	sds ibuf;
82	int readlen; /* readlen == -1 means read a single line */
83	unsigned int written; /* bytes of 'obuf' already written */
84	int replytype;
85	long long start; /* start time in milliseconds */
86	} *client;
87
88	/* Prototypes */
89	static void writeHandler(aeEventLoop el, int fd, void privdata, int mask);
90	static void createMissingClients(client c);
91
92	/* Implementation */
93	static long long mstime(void) {
94	struct timeval tv;
95	long long mst;
96
97	gettimeofday(&tv, NULL);
98	mst = ((long)tv.tv_sec)*1000;
99	mst += tv.tv_usec/1000;
100	return mst;
101	}
102
103	static void freeClient(client c) {
104	listNode *ln;
105
106	aeDeleteFileEvent(config.el,c->fd,AE_WRITABLE);
107	aeDeleteFileEvent(config.el,c->fd,AE_READABLE);
108	sdsfree(c->ibuf);
109	sdsfree(c->obuf);
110	close(c->fd);
111	zfree(c);
112	config.liveclients--;
113	ln = listSearchKey(config.clients,c);
114	assert(ln != NULL);
115	listDelNode(config.clients,ln);
116	}
117
118	static void freeAllClients(void) {
119	listNode ln = config.clients->head, next;
120
121	while(ln) {
122	next = ln->next;
123	freeClient(ln->value);
124	ln = next;
125	}
126	}
127
128	static void resetClient(client c) {
129	aeDeleteFileEvent(config.el,c->fd,AE_WRITABLE);
130	aeDeleteFileEvent(config.el,c->fd,AE_READABLE);
131	aeCreateFileEvent(config.el,c->fd, AE_WRITABLE,writeHandler,c,NULL);
132	sdsfree(c->ibuf);
133	c->ibuf = sdsempty();
134	c->readlen = (c->replytype == REPLY_BULK) ? -1 : 0;
135	c->written = 0;
136	c->state = CLIENT_SENDQUERY;
137	c->start = mstime();
138	}
139
140	static void clientDone(client c) {
141	long long latency;
142	config.donerequests ++;
143	latency = mstime() - c->start;
144	if (latency > MAX_LATENCY) latency = MAX_LATENCY;
145	config.latency[latency]++;
146
147	if (config.donerequests == config.requests) {
148	freeClient(c);
149	aeStop(config.el);
150	return;
151	}
152	if (config.keepalive) {
153	resetClient(c);
154	} else {
155	config.liveclients--;
156	createMissingClients(c);
157	config.liveclients++;
158	freeClient(c);
159	}
160	}
161
162	static void readHandler(aeEventLoop el, int fd, void privdata, int mask)
163	{
164	char buf[1024];
165	int nread;
166	client c = privdata;
167	REDIS_NOTUSED(el);
168	REDIS_NOTUSED(fd);
169	REDIS_NOTUSED(mask);
170
171	nread = read(c->fd, buf, 1024);
172	if (nread == -1) {
173	fprintf(stderr, "Reading from socket: %s\n", strerror(errno));
174	freeClient(c);
175	return;
176	}
177	if (nread == 0) {
178	fprintf(stderr, "EOF from client\n");
179	freeClient(c);
180	return;
181	}
182	c->ibuf = sdscatlen(c->ibuf,buf,nread);
183
184	if (c->replytype == REPLY_INT \|\|
185	c->replytype == REPLY_RETCODE \|\|
186	(c->replytype == REPLY_BULK && c->readlen == -1)) {
187	char *p;
188
189	if ((p = strchr(c->ibuf,'\n')) != NULL) {
190	if (c->replytype == REPLY_BULK) {
191	*p = '\0';
192	*(p-1) = '\0';
4c26a79a	193	c->readlen = atoi(c->ibuf+1)+2;
4c26a79a	194	if (c->readlen == -1) {
ed9b544e	195	clientDone(c);
	196	return;
	197	}
ed9b544e	198	c->ibuf = sdsrange(c->ibuf,(p-c->ibuf)+1,-1);
	199	} else {
	200	c->ibuf = sdstrim(c->ibuf,"\r\n");
	201	clientDone(c);
	202	return;
	203	}
	204	}
	205	}
	206	/* bulk read */
	207	if ((unsigned)c->readlen == sdslen(c->ibuf))
	208	clientDone(c);
	209	}
	210
	211	static void writeHandler(aeEventLoop el, int fd, void privdata, int mask)
	212	{
	213	client c = privdata;
	214	REDIS_NOTUSED(el);
	215	REDIS_NOTUSED(fd);
	216	REDIS_NOTUSED(mask);
	217
	218	if (c->state == CLIENT_CONNECTING) {
	219	c->state = CLIENT_SENDQUERY;
	220	c->start = mstime();
	221	}
	222	if (sdslen(c->obuf) > c->written) {
	223	void *ptr = c->obuf+c->written;
	224	int len = sdslen(c->obuf) - c->written;
	225	int nwritten = write(c->fd, ptr, len);
	226	if (nwritten == -1) {
	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->fd,AE_WRITABLE);
	234	aeCreateFileEvent(config.el,c->fd,AE_READABLE,readHandler,c,NULL);
	235	c->state = CLIENT_READREPLY;
	236	}
	237	}
	238	}
	239
	240	static client createClient(void) {
	241	client c = zmalloc(sizeof(struct _client));
	242	char err[ANET_ERR_LEN];
	243
	244	c->fd = anetTcpNonBlockConnect(err,config.hostip,config.hostport);
	245	if (c->fd == ANET_ERR) {
	246	zfree(c);
	247	fprintf(stderr,"Connect: %s\n",err);
	248	return NULL;
	249	}
	250	anetTcpNoDelay(NULL,c->fd);
	251	c->obuf = sdsempty();
	252	c->ibuf = sdsempty();
	253	c->readlen = 0;
	254	c->written = 0;
	255	c->state = CLIENT_CONNECTING;
	256	aeCreateFileEvent(config.el, c->fd, AE_WRITABLE, writeHandler, c, NULL);
	257	config.liveclients++;
	258	listAddNodeTail(config.clients,c);
	259	return c;
	260	}
	261
262	static void createMissingClients(client c) {
263	while(config.liveclients < config.numclients) {
264	client new = createClient();
265	if (!new) continue;
266	sdsfree(new->obuf);
267	new->obuf = sdsdup(c->obuf);
268	new->replytype = c->replytype;
269	if (c->replytype == REPLY_BULK)
270	new->readlen = -1;
271	}
272	}
273
274	static void showLatencyReport(char *title) {
275	int j, seen = 0;
276	float perc, reqpersec;
277
278	reqpersec = (float)config.donerequests/((float)config.totlatency/1000);
279	if (!config.quiet) {
280	printf("====== %s ======\n", title);
281	printf(" %d requests completed in %.2f seconds\n", config.donerequests,
282	(float)config.totlatency/1000);
283	printf(" %d parallel clients\n", config.numclients);
284	printf(" %d bytes payload\n", config.datasize);
285	printf(" keep alive: %d\n", config.keepalive);
286	printf("\n");
287	for (j = 0; j <= MAX_LATENCY; j++) {
288	if (config.latency[j]) {
289	seen += config.latency[j];
290	perc = ((float)seen*100)/config.donerequests;
291	printf("%.2f%% <= %d milliseconds\n", perc, j);
292	}
293	}
294	printf("%.2f requests per second\n\n", reqpersec);
295	} else {
296	printf("%s: %.2f requests per second\n", title, reqpersec);
297	}
298	}
299
300	static void prepareForBenchmark(void)
301	{
302	memset(config.latency,0,sizeof(int)*(MAX_LATENCY+1));
303	config.start = mstime();
304	config.donerequests = 0;
305	}
306
307	static void endBenchmark(char *title) {
308	config.totlatency = mstime()-config.start;
309	showLatencyReport(title);
310	freeAllClients();
311	}
312
313	void parseOptions(int argc, char **argv) {
314	int i;
315
316	for (i = 1; i < argc; i++) {
317	int lastarg = i==argc-1;
318
319	if (!strcmp(argv[i],"-c") && !lastarg) {
320	config.numclients = atoi(argv[i+1]);
321	i++;
322	} else if (!strcmp(argv[i],"-n") && !lastarg) {
323	config.requests = atoi(argv[i+1]);
324	i++;
325	} else if (!strcmp(argv[i],"-k") && !lastarg) {
326	config.keepalive = atoi(argv[i+1]);
327	i++;
328	} else if (!strcmp(argv[i],"-h") && !lastarg) {
329	char *ip = zmalloc(32);
330	if (anetResolve(NULL,argv[i+1],ip) == ANET_ERR) {
331	printf("Can't resolve %s\n", argv[i]);
332	exit(1);
333	}
334	config.hostip = ip;
335	i++;
336	} else if (!strcmp(argv[i],"-p") && !lastarg) {
337	config.hostport = atoi(argv[i+1]);
338	i++;
339	} else if (!strcmp(argv[i],"-d") && !lastarg) {
340	config.datasize = atoi(argv[i+1]);
341	i++;
342	if (config.datasize < 1) config.datasize=1;
343	if (config.datasize > 10241024) config.datasize = 10241024;
344	} else if (!strcmp(argv[i],"-q")) {
345	config.quiet = 1;
346	} else if (!strcmp(argv[i],"-l")) {
347	config.loop = 1;
348	} else {
349	printf("Wrong option '%s' or option argument missing\n\n",argv[i]);
350	printf("Usage: redis-benchmark [-h <host>] [-p <port>] [-c <clients>] [-n <requests]> [-k <boolean>]\n\n");
351	printf(" -h <hostname> Server hostname (default 127.0.0.1)\n");
352	printf(" -p <hostname> Server port (default 6379)\n");
353	printf(" -c <clients> Number of parallel connections (default 50)\n");
354	printf(" -n <requests> Total number of requests (default 10000)\n");
355	printf(" -d <size> Data size of SET/GET value in bytes (default 2)\n");
356	printf(" -k <boolean> 1=keep alive 0=reconnect (default 1)\n");
357	printf(" -q Quiet. Just show query/sec values\n");
358	printf(" -l Loop. Run the tests forever\n");
359	exit(1);
360	}
361	}
362	}
363
364	int main(int argc, char **argv) {
365	client c;
366
367	signal(SIGHUP, SIG_IGN);
368	signal(SIGPIPE, SIG_IGN);
369
370	config.numclients = 50;
371	config.requests = 10000;
372	config.liveclients = 0;
373	config.el = aeCreateEventLoop();
374	config.keepalive = 1;
375	config.donerequests = 0;
376	config.datasize = 3;
377	config.quiet = 0;
378	config.loop = 0;
379	config.latency = NULL;
380	config.clients = listCreate();
381	config.latency = zmalloc(sizeof(int)*(MAX_LATENCY+1));
382
383	config.hostip = "127.0.0.1";
384	config.hostport = 6379;
385
386	parseOptions(argc,argv);
387
388	if (config.keepalive == 0) {
389	printf("WARNING: keepalive disabled, you probably need 'echo 1 > /proc/sys/net/ipv4/tcp_tw_reuse' in order to use a lot of clients/requests\n");
390	}
391
392	do {
393	prepareForBenchmark();
394	c = createClient();
395	if (!c) exit(1);
396	c->obuf = sdscat(c->obuf,"PING\r\n");
397	c->replytype = REPLY_RETCODE;
398	createMissingClients(c);
399	aeMain(config.el);
400	endBenchmark("PING");
401
402	prepareForBenchmark();
403	c = createClient();
404	if (!c) exit(1);
405	c->obuf = sdscatprintf(c->obuf,"SET foo %d\r\n",config.datasize);
406	{
407	char *data = zmalloc(config.datasize+2);
408	memset(data,'x',config.datasize);
409	data[config.datasize] = '\r';
410	data[config.datasize+1] = '\n';
411	c->obuf = sdscatlen(c->obuf,data,config.datasize+2);
412	}
413	c->replytype = REPLY_RETCODE;
414	createMissingClients(c);
415	aeMain(config.el);
416	endBenchmark("SET");
417
418	prepareForBenchmark();
419	c = createClient();
420	if (!c) exit(1);
421	c->obuf = sdscat(c->obuf,"GET foo\r\n");
422	c->replytype = REPLY_BULK;
423	c->readlen = -1;
424	createMissingClients(c);
425	aeMain(config.el);
426	endBenchmark("GET");
427
428	prepareForBenchmark();
429	c = createClient();
430	if (!c) exit(1);
431	c->obuf = sdscat(c->obuf,"INCR counter\r\n");
432	c->replytype = REPLY_INT;
433	createMissingClients(c);
434	aeMain(config.el);
435	endBenchmark("INCR");
436
437	prepareForBenchmark();
438	c = createClient();
439	if (!c) exit(1);
440	c->obuf = sdscat(c->obuf,"LPUSH mylist 3\r\nbar\r\n");
441	c->replytype = REPLY_INT;
442	createMissingClients(c);
443	aeMain(config.el);
444	endBenchmark("LPUSH");
445
446	prepareForBenchmark();
447	c = createClient();
448	if (!c) exit(1);
449	c->obuf = sdscat(c->obuf,"LPOP mylist\r\n");
450	c->replytype = REPLY_BULK;
451	c->readlen = -1;
452	createMissingClients(c);
453	aeMain(config.el);
454	endBenchmark("LPOP");
455
456	printf("\n");
457	} while(config.loop);
458
459	return 0;
460	}