("log-file", po::value<std::string>(), "log file location")
("pid-file", po::value<std::string>(), "PID file location")
("switch-sync-interval,s", po::value<time_t>(), "switch synchronization interval")
("log-file", po::value<std::string>(), "log file location")
("pid-file", po::value<std::string>(), "PID file location")
("switch-sync-interval,s", po::value<time_t>(), "switch synchronization interval")