Question 2 (30 points) A file server with a CPU and two disks, 1 and 2. is modeled as shown below. Exit Enter Disk 1 alla 3110 TO CPU Disk 2 After making some initial estimates of software performance, you are given the following information: Throughput: 3 client requests per second. o Visit ratio for disk1: 5 visits per client request to disk 1. o Visit ratio for disk2: 6 visits per client request to disk 2. Service time per visit for CPU: 0.02 seconds per visit to CPU. o Service time per visit for diskl: 0.045 seconds per visit to disk 1. o Service time per visit for disk2: 0.03 seconds per visit to disk 2. a) (8 points) Calculate device utilizations and determine which device is the bottleneck. b) (9 points) Calculate the file server response time. c) (9 Points) Calculate the average number of requests at the file server. d) (4 Points) What is the maximum theoretical arrival rate of requests sustained by this file server? Question 2 (30 points) A file server with a CPU and two disks, 1 and 2. is modeled as shown below. Exit Enter Disk 1 alla 3110 TO CPU Disk 2 After making some initial estimates of software performance, you are given the following information: Throughput: 3 client requests per second. o Visit ratio for disk1: 5 visits per client request to disk 1. o Visit ratio for disk2: 6 visits per client request to disk 2. Service time per visit for CPU: 0.02 seconds per visit to CPU. o Service time per visit for diskl: 0.045 seconds per visit to disk 1. o Service time per visit for disk2: 0.03 seconds per visit to disk 2. a) (8 points) Calculate device utilizations and determine which device is the bottleneck. b) (9 points) Calculate the file server response time. c) (9 Points) Calculate the average number of requests at the file server. d) (4 Points) What is the maximum theoretical arrival rate of requests sustained by this file server