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Implemented --latency in redis-cli

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This commit is contained in:
antirez 2011-09-15 19:28:00 +02:00
parent f190705722
commit 43071993e1
1 changed files with 42 additions and 0 deletions
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42
src/redis-cli.c
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@ -61,6 +61,7 @@ static struct config {
int shutdown;
int monitor_mode;
int pubsub_mode;
int latency_mode;
int stdinarg; /* get last arg from stdin. (-x option) */
char *auth;
int raw_output; /* output mode per command */
@ -567,6 +568,8 @@ static int parseOptions(int argc, char **argv) {
i++;
} else if (!strcmp(argv[i],"--raw")) {
config.raw_output = 1;
} else if (!strcmp(argv[i],"--latency")) {
config.latency_mode = 1;
} else if (!strcmp(argv[i],"-d") && !lastarg) {
sdsfree(config.mb_delim);
config.mb_delim = sdsnew(argv[i+1]);
@ -617,6 +620,7 @@ static void usage() {
" -x Read last argument from STDIN\n"
" -d <delimiter> Multi-bulk delimiter in for raw formatting (default: \\n)\n"
" --raw Use raw formatting for replies (default when STDOUT is not a tty)\n"
" --latency Enter a special mode continuously sampling latency.\n"
" --help Output this help and exit\n"
" --version Output version and exit\n"
"\n"
@ -739,6 +743,37 @@ static int noninteractive(int argc, char **argv) {
return retval;
}
static void latencyMode(void) {
redisReply *reply;
long long start, latency, min, max, tot, count = 0;
double avg;
if (!context) exit(1);
while(1) {
start = mstime();
reply = redisCommand(context,"PING");
if (reply == NULL) {
fprintf(stderr,"\nI/O error\n");
exit(1);
}
latency = mstime()-start;
freeReplyObject(reply);
count++;
if (count == 1) {
min = max = tot = latency;
avg = (double) latency;
} else {
if (latency < min) min = latency;
if (latency > max) max = latency;
avg = (double) tot/count;
}
printf("\x1b[0G\x1b[2Kmin: %lld, max: %lld, avg: %.2f (%lld samples)",
min, max, avg, count);
fflush(stdout);
usleep(10000);
}
}
int main(int argc, char **argv) {
int firstarg;
@ -752,6 +787,7 @@ int main(int argc, char **argv) {
config.shutdown = 0;
config.monitor_mode = 0;
config.pubsub_mode = 0;
config.latency_mode = 0;
config.stdinarg = 0;
config.auth = NULL;
config.raw_output = !isatty(fileno(stdout)) && (getenv("FAKETTY") == NULL);
@ -762,6 +798,12 @@ int main(int argc, char **argv) {
argc -= firstarg;
argv += firstarg;
/* Start in latency mode if appropriate */
if (config.latency_mode) {
cliConnect(0);
latencyMode();
}
/* Start interactive mode when no command is provided */
if (argc == 0) {
/* Note that in repl mode we don't abort on connection error.