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redis-cli: --latency-history mode implemented.

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antirez 2013-04-11 13:11:41 +02:00
parent b84570dece
commit 0280c2f252
1 changed files with 41 additions and 21 deletions
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62
src/redis-cli.c
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@ -72,6 +72,7 @@ static struct config {
int monitor_mode;
int pubsub_mode;
int latency_mode;
int latency_history;
int cluster_mode;
int cluster_reissue_command;
int slave_mode;
@ -701,6 +702,9 @@ static int parseOptions(int argc, char **argv) {
config.output = OUTPUT_CSV;
} else if (!strcmp(argv[i],"--latency")) {
config.latency_mode = 1;
} else if (!strcmp(argv[i],"--latency-history")) {
config.latency_mode = 1;
config.latency_history = 1;
} else if (!strcmp(argv[i],"--slave")) {
config.slave_mode = 1;
} else if (!strcmp(argv[i],"--stat")) {
@ -754,26 +758,29 @@ static void usage() {
"redis-cli %s\n"
"\n"
"Usage: redis-cli [OPTIONS] [cmd [arg [arg ...]]]\n"
" -h <hostname> Server hostname (default: 127.0.0.1)\n"
" -p <port> Server port (default: 6379)\n"
" -s <socket> Server socket (overrides hostname and port)\n"
" -a <password> Password to use when connecting to the server\n"
" -r <repeat> Execute specified command N times\n"
" -i <interval> When -r is used, waits <interval> seconds per command.\n"
" It is possible to specify sub-second times like -i 0.1\n"
" -n <db> Database number\n"
" -x Read last argument from STDIN\n"
" -d <delimiter> Multi-bulk delimiter in for raw formatting (default: \\n)\n"
" -c Enable cluster mode (follow -ASK and -MOVED redirections)\n"
" --raw Use raw formatting for replies (default when STDOUT is not a tty)\n"
" --latency Enter a special mode continuously sampling latency\n"
" --slave Simulate a slave showing commands received from the master\n"
" --rdb <filename> Transfer an RDB dump from remote server to local file.\n"
" --pipe Transfer raw Redis protocol from stdin to server\n"
" --bigkeys Sample Redis keys looking for big keys\n"
" --eval <file> Send an EVAL command using the Lua script at <file>\n"
" --help Output this help and exit\n"
" --version Output version and exit\n"
" -h <hostname> Server hostname (default: 127.0.0.1)\n"
" -p <port> Server port (default: 6379)\n"
" -s <socket> Server socket (overrides hostname and port)\n"
" -a <password> Password to use when connecting to the server\n"
" -r <repeat> Execute specified command N times\n"
" -i <interval> When -r is used, waits <interval> seconds per command.\n"
" It is possible to specify sub-second times like -i 0.1\n"
" -n <db> Database number\n"
" -x Read last argument from STDIN\n"
" -d <delimiter> Multi-bulk delimiter in for raw formatting (default: \\n)\n"
" -c Enable cluster mode (follow -ASK and -MOVED redirections)\n"
" --raw Use raw formatting for replies (default when STDOUT is\n"
" not a tty)\n"
" --latency Enter a special mode continuously sampling latency\n"
" --latency-history Like --latency but tracking latency changes over time.\n"
" Default time interval is 15 sec. Change it using -i.\n"
" --slave Simulate a slave showing commands received from the master\n"
" --rdb <filename> Transfer an RDB dump from remote server to local file.\n"
" --pipe Transfer raw Redis protocol from stdin to server\n"
" --bigkeys Sample Redis keys looking for big keys\n"
" --eval <file> Send an EVAL command using the Lua script at <file>\n"
" --help Output this help and exit\n"
" --version Output version and exit\n"
"\n"
"Examples:\n"
" cat /etc/passwd | redis-cli -x set mypasswd\n"
@ -944,10 +951,16 @@ static int evalMode(int argc, char **argv) {
return cliSendCommand(argc+3-got_comma, argv2, config.repeat);
}
#define LATENCY_SAMPLE_RATE 10 /* milliseconds. */
#define LATENCY_HISTORY_DEFAULT_INTERVAL 15000 /* milliseconds. */
static void latencyMode(void) {
redisReply *reply;
long long start, latency, min = 0, max = 0, tot = 0, count = 0;
long long history_interval =
config.interval ? config.interval/1000 :
LATENCY_HISTORY_DEFAULT_INTERVAL;
double avg;
long long history_start = mstime();
if (!context) exit(1);
while(1) {
@ -972,7 +985,13 @@ static void latencyMode(void) {
printf("\x1b[0G\x1b[2Kmin: %lld, max: %lld, avg: %.2f (%lld samples)",
min, max, avg, count);
fflush(stdout);
usleep(10000);
if (config.latency_history && mstime()-history_start > history_interval)
{
printf(" -- %.2f seconds range\n", (float)(mstime()-history_start)/1000);
history_start = mstime();
min = max = tot = count = 0;
}
usleep(LATENCY_SAMPLE_RATE * 1000);
}
}
@ -1453,6 +1472,7 @@ int main(int argc, char **argv) {
config.monitor_mode = 0;
config.pubsub_mode = 0;
config.latency_mode = 0;
config.latency_history = 0;
config.cluster_mode = 0;
config.slave_mode = 0;
config.getrdb_mode = 0;