presto-main/src/main/java/io/prestosql/server/remotetask/HttpRemoteTask.java/HttpRemoteTask/updateStats
class HttpRemoteTask:        private void updateStats(long currentRequestStartNanos)
        {
            Duration requestRoundTrip = Duration.nanosSince(currentRequestStartNanos);
            stats.updateRoundTripMillis(requestRoundTrip.toMillis());
        }