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Dynamic HZ: adapt cron frequency to number of clients.

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antirez
2018-07-23 14:21:04 +02:00
parent 7b5f0223f8
commit d42602ffc8
2 changed files with 17 additions and 5 deletions
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11
src/server.c
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@ -1096,6 +1096,17 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) {
/* Update the time cache. */
updateCachedTime();
/* Adapt the server.hz value to the number of configured clients. If we have
* many clients, we want to call serverCron() with an higher frequency. */
server.hz = server.config_hz;
while (listLength(server.clients) / server.hz > MAX_CLIENTS_PER_CLOCK_TICK) {
server.hz *= 2;
if (server.hz > CONFIG_MAX_HZ) {
server.hz = CONFIG_MAX_HZ;
break;
}
}
run_with_period(100) {
trackInstantaneousMetric(STATS_METRIC_COMMAND,server.stat_numcommands);
trackInstantaneousMetric(STATS_METRIC_NET_INPUT,