9. Elementary Queuing Analysis Flashcards

1
Q

M/M/1

A
  • Poisson arrivals, exponential service time, 1 server, infinite queue
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2
Q

Probability of j requests in an M/M/1 system

A
  • rho^j * (1 - rho)
  • j ~ Geometric(1- rho)
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3
Q

The average number of requests in an M/M/1 system at steady-state

A
  • q = rho / (1 - rho)
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4
Q

The average number of items waiting in the queue in an M/M/1 system at steady state

A
  • Solve for w from the equation q = w + rho
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5
Q

Slowdown in an M/M/1 System

A
  • 1 / (1 - rho)
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