M/G/1 with vacations Once the system is empty,the server takes a vacation If system is still empty after the vacation,the server takes another vacation Useful in analyzing some polling and reservation systems Vacation times are i.i.d and independent of service times and arrival times The only impact on analysis is that a customer may enter to find the server on vacation,and must wait until end of that vacation Weigiang Sun Communication NetworksWeiqiang Sun Communication Networks M/G/1 with vacations • Once the system is empty, the server takes a vacation – If system is still empty after the vacation, the server takes another vacation – Useful in analyzing some polling and reservation systems • Vacation times are i.i.d and independent of service times and arrival times • The only impact on analysis is that a customer may enter to find the server on vacation, and must wait until end of that vacation 9