redis-benchmark: ability to run selected tests. Better help with examples.

[redis.git] / src / redis-benchmark.c

diff --git a/src/redis-benchmark.c b/src/redis-benchmark.c
index 297ecc6c5a87ab28cc8f135fcd7842de4c26f4d4..b22322f4a70d4da179d89eacfa1589d091ff6f98 100644 (file)
--- a/src/redis-benchmark.c
+++ b/src/redis-benchmark.c
@@ -40,59 +40,48 @@
 #include <assert.h>
 
 #include "ae.h"
 #include <assert.h>
 
 #include "ae.h"

-#include "anet.h"
+#include "hiredis.h"

 #include "sds.h"
 #include "adlist.h"
 #include "zmalloc.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 {
 #define REDIS_NOTUSED(V) ((void) V)
 
 static struct config {

-    int debug;
+    aeEventLoop *el;
+    const char *hostip;
+    int hostport;
+    const char *hostsocket;

     int numclients;
     int numclients;

-    int requests;

     int liveclients;
     int liveclients;

-    int donerequests;
+    int requests;
+    int requests_issued;
+    int requests_finished;

     int keysize;
     int datasize;
     int randomkeys;
     int randomkeys_keyspacelen;
     int keysize;
     int datasize;
     int randomkeys;
     int randomkeys_keyspacelen;

-    aeEventLoop *el;
-    char *hostip;
-    int hostport;

     int keepalive;
     long long start;
     long long totlatency;
     int keepalive;
     long long start;
     long long totlatency;

-    int *latency;
-    char *title;
+    long long *latency;
+    const char *title;

     list *clients;
     int quiet;
     list *clients;
     int quiet;

+    int csv;

     int loop;
     int idlemode;
     int loop;
     int idlemode;

+    char *tests;

 } config;
 
 typedef struct _client {
 } config;
 
 typedef struct _client {

-    int state;
-    int fd;
+    redisContext *context;

     sds obuf;
     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 */
+    char *randptr[10]; /* needed for MSET against 10 keys */
+    size_t randlen;
+    unsigned int written; /* bytes of 'obuf' already written */
+    long long start; /* start time of a request */
+    long long latency; /* request latency */

 } *client;
 
 /* Prototypes */
 } *client;
 
 /* Prototypes */


@@ -100,6 +89,16 @@ static void writeHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 static void createMissingClients(client c);
 
 /* Implementation */
 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;
 static long long mstime(void) {
     struct timeval tv;
     long long mst;


@@ -112,12 +111,10 @@ static long long mstime(void) {
 
 static void freeClient(client c) {
     listNode *ln;
 
 static void freeClient(client c) {
     listNode *ln;

-
-    aeDeleteFileEvent(config.el,c->fd,AE_WRITABLE);
-    aeDeleteFileEvent(config.el,c->fd,AE_READABLE);
-    sdsfree(c->ibuf);
+    aeDeleteFileEvent(config.el,c->context->fd,AE_WRITABLE);
+    aeDeleteFileEvent(config.el,c->context->fd,AE_READABLE);
+    redisFree(c->context);

     sdsfree(c->obuf);
     sdsfree(c->obuf);

-    close(c->fd);

     zfree(c);
     config.liveclients--;
     ln = listSearchKey(config.clients,c);
     zfree(c);
     config.liveclients--;
     ln = listSearchKey(config.clients,c);


@@ -136,69 +133,31 @@ static void freeAllClients(void) {
 }
 
 static void resetClient(client c) {
 }
 
 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;
+    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->written = 0;

-    c->totreceived = 0;
-    c->state = CLIENT_SENDQUERY;
-    c->start = mstime();
-    createMissingClients(c);

 }
 
 static void randomizeClientKey(client c) {
 }
 
 static void randomizeClientKey(client c) {

-    char *p;

     char buf[32];
     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));
-}
+    size_t i, r;

 
 

-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;
+    for (i = 0; i < c->randlen; i++) {
+        r = random() % config.randomkeys_keyspacelen;
+        snprintf(buf,sizeof(buf),"%012zu",r);
+        memcpy(c->randptr[i],buf,12);

     }
 }
 
 static void clientDone(client c) {
     }
 }
 
 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) {
+    if (config.requests_finished == config.requests) {

         freeClient(c);
         aeStop(config.el);
         return;
     }
     if (config.keepalive) {
         resetClient(c);
         freeClient(c);
         aeStop(config.el);
         return;
     }
     if (config.keepalive) {
         resetClient(c);

-        if (config.randomkeys) randomizeClientKey(c);

     } else {
         config.liveclients--;
         createMissingClients(c);
     } else {
         config.liveclients--;
         createMissingClients(c);


@@ -207,139 +166,62 @@ static void clientDone(client c) {
     }
 }
 
     }
 }
 

-/* Read a length from the buffer pointed to by *p, store the length in *len,
- * and return the number of bytes that the cursor advanced. */
-static int readLen(char *p, int *len) {
-    char *tail = strstr(p,"\r\n");
-    if (tail == NULL)
-        return 0;
-    *tail = '\0';
-    *len = atoi(p+1);
-    return tail+2-p;
-}
-
-static void readHandler(aeEventLoop *el, int fd, void *privdata, int mask)
-{
-    char buf[1024], *p;
-    int nread, pos=0, len=0;
+static void readHandler(aeEventLoop *el, int fd, void *privdata, int mask) {

     client c = privdata;
     client c = privdata;

+    void *reply = NULL;

     REDIS_NOTUSED(el);
     REDIS_NOTUSED(fd);
     REDIS_NOTUSED(mask);
 
     REDIS_NOTUSED(el);
     REDIS_NOTUSED(fd);
     REDIS_NOTUSED(mask);
 

-    nread = read(c->fd,buf,sizeof(buf));
-    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);
-    len = sdslen(c->ibuf);
-
-    if (c->replytype == REPLY_INT ||
-        c->replytype == REPLY_RETCODE)
-    {
-        /* Check if the first line is complete. This is everything we need
-         * when waiting for an integer or status code reply.*/
-        if ((p = strstr(c->ibuf,"\r\n")) != NULL)
-            goto done;
-    } else if (c->replytype == REPLY_BULK) {
-        int advance = 0;
-        if (c->readlen < 0) {
-            advance = readLen(c->ibuf+pos,&c->readlen);
-            if (advance) {
-                pos += advance;
-                if (c->readlen == -1) {
-                    goto done;
-                } else {
-                    /* include the trailing \r\n */
-                    c->readlen += 2;
-                }
-            } else {
-                goto skip;
-            }
-        }
+    /* 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);

 
 

-        int canconsume;
-        if (c->readlen > 0) {
-            canconsume = c->readlen > (len-pos) ? (len-pos) : c->readlen;
-            c->readlen -= canconsume;
-            pos += canconsume;
+    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 (c->readlen == 0)
-            goto done;
-    } else if (c->replytype == REPLY_MBULK) {
-        int advance = 0;
-        if (c->mbulk == -1) {
-            advance = readLen(c->ibuf+pos,&c->mbulk);
-            if (advance) {
-                pos += advance;
-                if (c->mbulk == -1)
-                    goto done;
-            } else {
-                goto skip;
+        if (reply != NULL) {
+            if (reply == (void*)REDIS_REPLY_ERROR) {
+                fprintf(stderr,"Unexpected error reply, exiting...\n");
+                exit(1);

             }
             }

-        }

 
 

-        int canconsume;
-        while(c->mbulk > 0 && pos < len) {
-            if (c->readlen > 0) {
-                canconsume = c->readlen > (len-pos) ? (len-pos) : c->readlen;
-                c->readlen -= canconsume;
-                pos += canconsume;
-                if (c->readlen == 0)
-                    c->mbulk--;
-            } else {
-                advance = readLen(c->ibuf+pos,&c->readlen);
-                if (advance) {
-                    pos += advance;
-                    if (c->readlen == -1) {
-                        c->mbulk--;
-                        continue;
-                    } else {
-                        /* include the trailing \r\n */
-                        c->readlen += 2;
-                    }
-                } else {
-                    goto skip;
-                }
-            }
+            if (config.requests_finished < config.requests)
+                config.latency[config.requests_finished++] = c->latency;
+            clientDone(c);

         }
         }

-
-        if (c->mbulk == 0)
-            goto done;

     }
     }

-
-skip:
-    c->ibuf = sdsrange(c->ibuf,pos,-1);
-    return;
-done:
-    clientDone(c);
-    return;

 }
 
 }
 

-static void writeHandler(aeEventLoop *el, int fd, void *privdata, int mask)
-{
+static void writeHandler(aeEventLoop *el, int fd, void *privdata, int mask) {

     client c = privdata;
     REDIS_NOTUSED(el);
     REDIS_NOTUSED(fd);
     REDIS_NOTUSED(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();
+    /* Initialize request when nothing was written. */
+    if (c->written == 0) {
+        /* Enforce upper bound to number of requests. */
+        if (config.requests_issued++ >= config.requests) {
+            freeClient(c);
+            return;
+        }
+
+        /* Really initialize: randomize keys and set start time. */
+        if (config.randomkeys) randomizeClientKey(c);
+        c->start = ustime();
+        c->latency = -1;

     }
     }

+

     if (sdslen(c->obuf) > c->written) {
         void *ptr = c->obuf+c->written;
     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);
+        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));
         if (nwritten == -1) {
             if (errno != EPIPE)
                 fprintf(stderr, "Writing to socket: %s\n", strerror(errno));


@@ -348,155 +230,224 @@ static void writeHandler(aeEventLoop *el, int fd, void *privdata, int mask)
         }
         c->written += nwritten;
         if (sdslen(c->obuf) == c->written) {
         }
         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;
+            aeDeleteFileEvent(config.el,c->context->fd,AE_WRITABLE);
+            aeCreateFileEvent(config.el,c->context->fd,AE_READABLE,readHandler,c);

         }
     }
 }
 
         }
     }
 }
 

-static client createClient(void) {
+static client createClient(const char *cmd, size_t len) {

     client c = zmalloc(sizeof(struct _client));
     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;
+    if (config.hostsocket == NULL) {
+        c->context = redisConnectNonBlock(config.hostip,config.hostport);
+    } else {
+        c->context = redisConnectUnixNonBlock(config.hostsocket);

     }
     }

-    anetTcpNoDelay(NULL,c->fd);
-    c->obuf = sdsempty();
-    c->ibuf = sdsempty();
-    c->mbulk = -1;
-    c->readlen = 0;
+    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->obuf = sdsnewlen(cmd,len);
+    c->randlen = 0;

     c->written = 0;
     c->written = 0;

-    c->totreceived = 0;
-    c->state = CLIENT_CONNECTING;
-    aeCreateFileEvent(config.el, c->fd, AE_WRITABLE, writeHandler, c);
-    config.liveclients++;
+
+    /* Find substrings in the output buffer that need to be randomized. */
+    if (config.randomkeys) {
+        char *p = c->obuf, *newline;
+        while ((p = strstr(p,":rand:")) != NULL) {
+            newline = strstr(p,"\r\n");
+            assert(newline-(p+6) == 12); /* 12 chars for randomness */
+            assert(c->randlen < (signed)(sizeof(c->randptr)/sizeof(char*)));
+            c->randptr[c->randlen++] = p+6;
+            p = newline+2;
+        }
+    }
+
+    redisSetReplyObjectFunctions(c->context,NULL);
+    aeCreateFileEvent(config.el,c->context->fd,AE_WRITABLE,writeHandler,c);

     listAddNodeTail(config.clients,c);
     listAddNodeTail(config.clients,c);

+    config.liveclients++;

     return c;
 }
 
 static void createMissingClients(client c) {
     return c;
 }
 
 static void createMissingClients(client c) {

+    int n = 0;
+

     while(config.liveclients < config.numclients) {
     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);
+        createClient(c->obuf,sdslen(c->obuf));
+
+        /* 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) {
 static void showLatencyReport(void) {

-    int j, seen = 0;
+    int i, curlat = 0;

     float perc, reqpersec;
 
     float perc, reqpersec;
 

-    reqpersec = (float)config.donerequests/((float)config.totlatency/1000);
-    if (!config.quiet) {
+    reqpersec = (float)config.requests_finished/((float)config.totlatency/1000);
+    if (!config.quiet && !config.csv) {

         printf("====== %s ======\n", config.title);
         printf("====== %s ======\n", config.title);

-        printf("  %d requests completed in %.2f seconds\n", config.donerequests,
+        printf("  %d requests completed in %.2f seconds\n", config.requests_finished,

             (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");
             (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);
+
+        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);
             }
         }
         printf("%.2f requests per second\n\n", reqpersec);

+    } else if (config.csv) {
+        printf("\"%s\",\"%.2f\"\n", config.title, reqpersec);

     } else {
         printf("%s: %.2f requests per second\n", config.title, reqpersec);
     }
 }
 
     } else {
         printf("%s: %.2f requests per second\n", config.title, reqpersec);
     }
 }
 

-static void prepareForBenchmark(char *title) {
-    memset(config.latency,0,sizeof(int)*(MAX_LATENCY+1));
+static void benchmark(const char *title, const char *cmd, int len) {
+    client c;
+

     config.title = title;
     config.title = title;

-    config.start = mstime();
-    config.donerequests = 0;
-}
+    config.requests_issued = 0;
+    config.requests_finished = 0;

 
 

-static void endBenchmark(void) {
+    c = createClient(cmd,len);
+    createMissingClients(c);
+
+    config.start = mstime();
+    aeMain(config.el);

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

+

     showLatencyReport();
     freeAllClients();
 }
 
     showLatencyReport();
     freeAllClients();
 }
 

-void parseOptions(int argc, char **argv) {
+/* Returns number of consumed options. */
+int parseOptions(int argc, const char **argv) {

     int i;
     int i;

+    int lastarg;
+    int exit_status = 1;

 
     for (i = 1; i < argc; 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++;
+        lastarg = (i == (argc-1));
+
+        if (!strcmp(argv[i],"-c")) {
+            if (lastarg) goto invalid;
+            config.numclients = atoi(argv[++i]);
+        } else if (!strcmp(argv[i],"-n")) {
+            if (lastarg) goto invalid;
+            config.requests = atoi(argv[++i]);
+        } else if (!strcmp(argv[i],"-k")) {
+            if (lastarg) goto invalid;
+            config.keepalive = atoi(argv[++i]);
+        } else if (!strcmp(argv[i],"-h")) {
+            if (lastarg) goto invalid;
+            config.hostip = strdup(argv[++i]);
+        } else if (!strcmp(argv[i],"-p")) {
+            if (lastarg) goto invalid;
+            config.hostport = atoi(argv[++i]);
+        } else if (!strcmp(argv[i],"-s")) {
+            if (lastarg) goto invalid;
+            config.hostsocket = strdup(argv[++i]);
+        } else if (!strcmp(argv[i],"-d")) {
+            if (lastarg) goto invalid;
+            config.datasize = atoi(argv[++i]);

             if (config.datasize < 1) config.datasize=1;
             if (config.datasize < 1) config.datasize=1;

-            if (config.datasize > 1024*1024) config.datasize = 1024*1024;
-        } else if (!strcmp(argv[i],"-r") && !lastarg) {
+            if (config.datasize > 1024*1024*1024) config.datasize = 1024*1024*1024;
+        } else if (!strcmp(argv[i],"-r")) {
+            if (lastarg) goto invalid;

             config.randomkeys = 1;
             config.randomkeys = 1;

-            config.randomkeys_keyspacelen = atoi(argv[i+1]);
+            config.randomkeys_keyspacelen = atoi(argv[++i]);

             if (config.randomkeys_keyspacelen < 0)
                 config.randomkeys_keyspacelen = 0;
             if (config.randomkeys_keyspacelen < 0)
                 config.randomkeys_keyspacelen = 0;

-            i++;

         } else if (!strcmp(argv[i],"-q")) {
             config.quiet = 1;
         } else if (!strcmp(argv[i],"-q")) {
             config.quiet = 1;

+        } else if (!strcmp(argv[i],"--csv")) {
+            config.csv = 1;

         } else if (!strcmp(argv[i],"-l")) {
             config.loop = 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 if (!strcmp(argv[i],"-I")) {
             config.idlemode = 1;

+        } else if (!strcmp(argv[i],"-t")) {
+            if (lastarg) goto invalid;
+            /* We get the list of tests to run as a string in the form
+             * get,set,lrange,...,test_N. Then we add a comma before and
+             * after the string in order to make sure that searching
+             * for ",testname," will always get a match if the test is
+             * enabled. */
+            config.tests = sdsnew(",");
+            config.tests = sdscat(config.tests,(char*)argv[++i]);
+            config.tests = sdscat(config.tests,",");
+            sdstolower(config.tests);
+        } else if (!strcmp(argv[i],"--help")) {
+            exit_status = 0;
+            goto usage;

         } else {
         } 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, 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);
+            /* Assume the user meant to provide an option when the arg starts
+             * with a dash. We're done otherwise and should use the remainder
+             * as the command and arguments for running the benchmark. */
+            if (argv[i][0] == '-') goto invalid;
+            return i;

         }
     }
         }
     }

+
+    return i;
+
+invalid:
+    printf("Invalid option \"%s\" or option argument missing\n\n",argv[i]);
+
+usage:
+    printf(
+"Usage: redis-benchmark [-h <host>] [-p <port>] [-c <clients>] [-n <requests]> [-k <boolean>]\n\n"
+" -h <hostname>      Server hostname (default 127.0.0.1)\n"
+" -p <port>          Server port (default 6379)\n"
+" -s <socket>        Server socket (overrides host and port)\n"
+" -c <clients>       Number of parallel connections (default 50)\n"
+" -n <requests>      Total number of requests (default 10000)\n"
+" -d <size>          Data size of SET/GET value in bytes (default 2)\n"
+" -k <boolean>       1=keep alive 0=reconnect (default 1)\n"
+" -r <keyspacelen>   Use random keys for SET/GET/INCR, random values for SADD\n"
+"  Using this option the benchmark will get/set keys\n"
+"  in the form mykey_rand000000012456 instead of constant\n"
+"  keys, the <keyspacelen> argument determines the max\n"
+"  number of values for the random number. For instance\n"
+"  if set to 10 only rand000000000000 - rand000000000009\n"
+"  range will be allowed.\n"
+" -q                 Quiet. Just show query/sec values\n"
+" --csv              Output in CSV format\n"
+" -l                 Loop. Run the tests forever\n"
+" -t <tests>         Only run the comma separated list of tests. The test\n"
+"                    names are the same as the ones produced as output.\n"
+" -I                 Idle mode. Just open N idle connections and wait.\n\n"
+"Examples:\n\n"
+" Run the benchmark with the default configuration against 127.0.0.1:6379:\n"
+"   $ redis-benchmark\n\n"
+" Use 20 parallel clients, for a total of 100k requests, against 192.168.1.1:\n"
+"   $ redis-benchmark -h 192.168.1.1 -p 6379 -n 100000 -c 20\n\n"
+" Fill 127.0.0.1:6379 with about 1 million keys only using the SET test:\n"
+"   $ redis-benchmark -t set -n 1000000 -r 100000000\n\n"
+" Benchmark 127.0.0.1:6379 for a few commands producing CSV output:\n"
+"   $ redis-benchmark -t ping,set,get -n 100000 --csv\n\n"
+    );
+    exit(exit_status);

 }
 
 int showThroughput(struct aeEventLoop *eventLoop, long long id, void *clientData) {
 }
 
 int showThroughput(struct aeEventLoop *eventLoop, long long id, void *clientData) {


@@ -504,41 +455,63 @@ int showThroughput(struct aeEventLoop *eventLoop, long long id, void *clientData
     REDIS_NOTUSED(id);
     REDIS_NOTUSED(clientData);
 
     REDIS_NOTUSED(id);
     REDIS_NOTUSED(clientData);
 

+    if (config.csv) return 250;

     float dt = (float)(mstime()-config.start)/1000.0;
     float dt = (float)(mstime()-config.start)/1000.0;

-    float rps = (float)config.donerequests/dt;
+    float rps = (float)config.requests_finished/dt;

     printf("%s: %.2f\r", config.title, rps);
     fflush(stdout);
     return 250; /* every 250ms */
 }
 
     printf("%s: %.2f\r", config.title, rps);
     fflush(stdout);
     return 250; /* every 250ms */
 }
 

-int main(int argc, char **argv) {
+/* Return true if the named test was selected using the -t command line
+ * switch, or if all the tests are selected (no -t passed by user). */
+int test_is_selected(char *name) {
+    char buf[256];
+    int l = strlen(name);
+
+    if (config.tests == NULL) return 1;
+    buf[0] = ',';
+    memcpy(buf+1,name,l);
+    buf[l+1] = ',';
+    buf[l+2] = '\0';
+    return strstr(config.tests,buf) != NULL;
+}
+
+int main(int argc, const char **argv) {
+    int i;
+    char *data, *cmd;
+    int len;
+

     client c;
 
     signal(SIGHUP, SIG_IGN);
     signal(SIGPIPE, SIG_IGN);
 
     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.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.datasize = 3;
     config.randomkeys = 0;
     config.randomkeys_keyspacelen = 0;
     config.quiet = 0;

+    config.csv = 0;

     config.loop = 0;
     config.idlemode = 0;
     config.latency = NULL;
     config.clients = listCreate();
     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;
     config.hostip = "127.0.0.1";
     config.hostport = 6379;

+    config.hostsocket = NULL;
+    config.tests = NULL;

 
 

-    parseOptions(argc,argv);
+    i = parseOptions(argc,argv);
+    argc -= i;
+    argv += i;
+
+    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.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");


@@ -546,151 +519,135 @@ int main(int argc, char **argv) {
 
     if (config.idlemode) {
         printf("Creating %d idle connections and waiting forever (Ctrl+C when done)\n", config.numclients);
 
     if (config.idlemode) {
         printf("Creating %d idle connections and waiting forever (Ctrl+C when done)\n", config.numclients);

-        prepareForBenchmark("IDLE");
-        c = createClient();
-        if (!c) exit(1);
-        c->obuf = sdsempty();
-        prepareClientForReply(c,REPLY_RETCODE); /* will never receive it */
+        c = createClient("",0); /* will never receive a reply */

         createMissingClients(c);
         aeMain(config.el);
         /* and will wait for every */
     }
 
         createMissingClients(c);
         aeMain(config.el);
         /* and will wait for every */
     }
 

+    /* Run benchmark with command in the remainder of the arguments. */
+    if (argc) {
+        sds title = sdsnew(argv[0]);
+        for (i = 1; i < argc; i++) {
+            title = sdscatlen(title, " ", 1);
+            title = sdscatlen(title, (char*)argv[i], strlen(argv[i]));
+        }
+
+        do {
+            len = redisFormatCommandArgv(&cmd,argc,argv,NULL);
+            benchmark(title,cmd,len);
+            free(cmd);
+        } while(config.loop);
+
+        return 0;
+    }
+
+    /* Run default benchmark suite. */

     do {
     do {

-        prepareForBenchmark("PING");
-        c = createClient();
-        if (!c) exit(1);
-        c->obuf = sdscat(c->obuf,"PING\r\n");
-        prepareClientForReply(c,REPLY_RETCODE);
-        createMissingClients(c);
-        aeMain(config.el);
-        endBenchmark();
+        data = zmalloc(config.datasize+1);
+        memset(data,'x',config.datasize);
+        data[config.datasize] = '\0';

 
 

-        prepareForBenchmark("PING (multi bulk)");
-        c = createClient();
-        if (!c) exit(1);
-        c->obuf = sdscat(c->obuf,"*1\r\n$4\r\nPING\r\n");
-        prepareClientForReply(c,REPLY_RETCODE);
-        createMissingClients(c);
-        aeMain(config.el);
-        endBenchmark();
+        if (test_is_selected("ping_inline") || test_is_selected("ping"))
+            benchmark("PING_INLINE","PING\r\n",6);

 
 

-        prepareForBenchmark("SET");
-        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);
+        if (test_is_selected("ping_mbulk") || test_is_selected("ping")) {
+            len = redisFormatCommand(&cmd,"PING");
+            benchmark("PING_BULK",cmd,len);
+            free(cmd);

         }
         }

-        prepareClientForReply(c,REPLY_RETCODE);
-        createMissingClients(c);
-        aeMain(config.el);
-        endBenchmark();

 
 

-        prepareForBenchmark("GET");
-        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();
+        if (test_is_selected("set")) {
+            len = redisFormatCommand(&cmd,"SET foo:rand:000000000000 %s",data);
+            benchmark("SET",cmd,len);
+            free(cmd);
+        }

 
 

-        prepareForBenchmark("INCR");
-        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();
+        if (test_is_selected("get")) {
+            len = redisFormatCommand(&cmd,"GET foo:rand:000000000000");
+            benchmark("GET",cmd,len);
+            free(cmd);
+        }

 
 

-        prepareForBenchmark("LPUSH");
-        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();
+        if (test_is_selected("incr")) {
+            len = redisFormatCommand(&cmd,"INCR counter:rand:000000000000");
+            benchmark("INCR",cmd,len);
+            free(cmd);
+        }

 
 

-        prepareForBenchmark("LPOP");
-        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();
+        if (test_is_selected("lpush")) {
+            len = redisFormatCommand(&cmd,"LPUSH mylist %s",data);
+            benchmark("LPUSH",cmd,len);
+            free(cmd);
+        }

 
 

-        prepareForBenchmark("SADD");
-        c = createClient();
-        if (!c) exit(1);
-        c->obuf = sdscat(c->obuf,"SADD myset 24\r\ncounter_rand000000000000\r\n");
-        prepareClientForReply(c,REPLY_RETCODE);
-        createMissingClients(c);
-        aeMain(config.el);
-        endBenchmark();
+        if (test_is_selected("lpop")) {
+            len = redisFormatCommand(&cmd,"LPOP mylist");
+            benchmark("LPOP",cmd,len);
+            free(cmd);
+        }

 
 

-        prepareForBenchmark("SPOP");
-        c = createClient();
-        if (!c) exit(1);
-        c->obuf = sdscat(c->obuf,"SPOP myset\r\n");
-        prepareClientForReply(c,REPLY_BULK);
-        createMissingClients(c);
-        aeMain(config.el);
-        endBenchmark();
+        if (test_is_selected("sadd")) {
+            len = redisFormatCommand(&cmd,
+                "SADD myset counter:rand:000000000000");
+            benchmark("SADD",cmd,len);
+            free(cmd);
+        }

 
 

-        prepareForBenchmark("LPUSH (again, in order to bench LRANGE)");
-        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();
+        if (test_is_selected("spop")) {
+            len = redisFormatCommand(&cmd,"SPOP myset");
+            benchmark("SPOP",cmd,len);
+            free(cmd);
+        }

 
 

-        prepareForBenchmark("LRANGE (first 100 elements)");
-        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();
+        if (test_is_selected("lrange") ||
+            test_is_selected("lrange_100") ||
+            test_is_selected("lrange_300") ||
+            test_is_selected("lrange_500") ||
+            test_is_selected("lrange_600"))
+        {
+            len = redisFormatCommand(&cmd,"LPUSH mylist %s",data);
+            benchmark("LPUSH (needed to benchmark LRANGE)",cmd,len);
+            free(cmd);
+        }

 
 

-        prepareForBenchmark("LRANGE (first 300 elements)");
-        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();
+        if (test_is_selected("lrange") || test_is_selected("lrange_100")) {
+            len = redisFormatCommand(&cmd,"LRANGE mylist 0 99");
+            benchmark("LRANGE_100 (first 100 elements)",cmd,len);
+            free(cmd);
+        }

 
 

-        prepareForBenchmark("LRANGE (first 450 elements)");
-        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();
+        if (test_is_selected("lrange") || test_is_selected("lrange_300")) {
+            len = redisFormatCommand(&cmd,"LRANGE mylist 0 299");
+            benchmark("LRANGE_300 (first 300 elements)",cmd,len);
+            free(cmd);
+        }

 
 

-        prepareForBenchmark("LRANGE (first 600 elements)");
-        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();
+        if (test_is_selected("lrange") || test_is_selected("lrange_500")) {
+            len = redisFormatCommand(&cmd,"LRANGE mylist 0 449");
+            benchmark("LRANGE_500 (first 450 elements)",cmd,len);
+            free(cmd);
+        }

 
 

-        printf("\n");
+        if (test_is_selected("lrange") || test_is_selected("lrange_600")) {
+            len = redisFormatCommand(&cmd,"LRANGE mylist 0 599");
+            benchmark("LRANGE_600 (first 600 elements)",cmd,len);
+            free(cmd);
+        }
+
+        if (test_is_selected("mset")) {
+            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);
+        }
+
+        if (!config.csv) printf("\n");

     } while(config.loop);
 
     return 0;
     } while(config.loop);
 
     return 0;