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Find substrings to randomize when the client is created

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This commit is contained in:
Pieter Noordhuis 2010-12-23 11:04:44 +01:00
parent d69a483556
commit 3c49070b35
1 changed files with 27 additions and 31 deletions
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58
src/redis-benchmark.c
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@ -80,7 +80,8 @@ typedef struct _client {
redisContext *context;
int state;
sds obuf;
char *randptr;
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 */
@ -145,29 +146,14 @@ static void resetClient(client c) {
}
static void randomizeClientKey(client c) {
char *p, *newline;
char buf[32];
long r;
size_t i, 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;
}
for (i = 0; i < c->randlen; i++) {
r = random() % config.randomkeys_keyspacelen;
snprintf(buf,sizeof(buf),"%012lu",r);
memcpy(c->randptr[i],buf,12);
}
/* 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) {
@ -249,7 +235,7 @@ static void writeHandler(aeEventLoop *el, int fd, void *privdata, int mask) {
}
}
static client createClient() {
static client createClient(char *cmd, int len) {
client c = zmalloc(sizeof(struct _client));
if (config.hostsocket == NULL) {
c->context = redisConnectNonBlock(config.hostip,config.hostport);
@ -265,9 +251,22 @@ static client createClient() {
exit(1);
}
c->state = CLIENT_CONNECTING;
c->obuf = NULL;
c->randptr = (void*)-1;
c->obuf = sdsnewlen(cmd,len);
c->randlen = 0;
c->written = 0;
/* 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);
@ -279,9 +278,8 @@ 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);
client new = createClient(c->obuf,sdslen(c->obuf));
if (config.randomkeys) randomizeClientKey(new);
/* Listen backlog is quite limited on most systems */
if (++n > 64) {
@ -329,8 +327,7 @@ static void benchmark(char *title, char *cmd, int len) {
config.title = title;
config.donerequests = 0;
c = createClient();
c->obuf = sdsnewlen(cmd,len);
c = createClient(cmd,len);
createMissingClients(c);
config.start = mstime();
@ -458,8 +455,7 @@ int main(int argc, char **argv) {
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();
c = createClient("",0); /* will never receive a reply */
createMissingClients(c);
aeMain(config.el);
/* and will wait for every */