Week 5 - SSA, Classes And Approximations / Analytical Models Of Queueing Systems

Question 1

Formula linking Ls and ρ

Answer 1

Question 2

Formula linking Lq with ρ (with M/M/m/b where m is less or equal to 1)

Answer 2

Question 3

Formula linking Lq with ρ (with M/M/m/b where m is less or equal to 2 and b is infinite)

Answer 3

Question 4

What happens when we have M/M/m/b where m = infinity and b is not infinity (3)

Answer 4

Question 5

What do we assume when we have M/M/m/b where m = infinity and b is not infinity (3)

Answer 5

Question 6

What do we assume when we have M/G/m/b where m = 1 and b is infinity

Answer 6

We assume that the service time distribution is independent of the state and interarrival times

Question 7

Formula for Lq where M/G/m/b where m is 1 and b is infinity

Answer 7

CV (S) is the coefficient variation for service time distribution

Question 8

Formula for Ls where M/G/m/b where m is 1 and b is infinity

Answer 8

CV (S) is the coefficient variation for service time distribution

Question 9

Formula for Lq where G/G/m/b where m is 1 and b is infinity

Answer 9

CV (A) is the coefficient variation in arrival process

Question 10

Formula for Lq where G/G/m/b where m is greater or equal to 2 and b is infinity

Answer 10

Question 11

Coefficient variation formula for Wq

Answer 11

Question 12

Coefficient variation for Ws

Answer 12