We computed the performance of random line queuing discipline in the previous article. However, in real life, we don’t really throw a coin in order to pick which of the two lines we take. Most of the time, we go to the shortest line for service. Using the techniques we have learned in modeling, we will compute the performance of this queue and compare the performance to the other queueing discplines we have computed so far.

**Markov Diagram**

As usual, the arrival rate of customers is 2 customers per minute. Each customer is given a service at an average of 20 secs, which means that an average of 3 customers are being serviced per minute.

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