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operating system
6) Banker's algorithm is used in deadlock avoidance, and the following table presents the...
Code the Bankers' algorithm for deadlock avoidance as described in lecture. Apply this algorithm against the...
Code the Bankers' algorithm for deadlock avoidance as described in lecture. Apply this algorithm against the following data displaying the Work, Need and Allocation matrices for each pass of the algorithm provided a safe state exists. Process Allocation Max Available A B C D A B C D A B C D P0 0 0 1 2 0 0 1 2 1 5 2 0 P1 1 0 0 0 1 7 5 0 P2 1 3 5 4 ...
Please give an explanation for the answers as well. 1. A system has three processes (P1,...
Please give an explanation for the answers as well. 1. A system has three processes (P1, P2, and P3) and three resources (R1, R2, and R3). There is one instance of RI, two instances of R2, and three instances of R3. PI holds RI and one instance of R3 and is requesting one instance from R2. P2 holds one instance of R3 and is requesting RI and one instance from R2. P3 holds two instances of R2 and one instance...
Subject : Operating System Banker's Algorithm: processes = {0, 1, 2, 3, 4}; Available...
Subject : Operating System Banker's Algorithm: processes = {0, 1, 2, 3, 4}; Available instances of resources avail = {3, 4, 2}; Maximum R that can be allocated to processes maxm[][R] = {{7, 5, 3}, {3, 2, 2}, {9, 0, 2}, {2, 2, 1}, {4, 3, 3}}; Resources allocated to processes allot[][R] = {{0, 1, 0}, {2, 0, 0}, {3, 0, 2}, {2, 1, 2}, ...
In order to prevent deadlocks, let a system adopt the policy of forcing processes to request...
In order to prevent deadlocks, let a system adopt the policy of forcing processes to request resources in ascending order of request type rank. In particular, when a process is requesting a resource of a certain type, the process cannot be holding other higher ranked resources. Consider four resource types with the following profile in this system: Resource Type Rank Number of Instances RT1 4 2 RT2 7 4 RT3 8 3 RT4 10 2 Let the following sequence of...
a. A system has two processes and three identical resources. Each process needs a maximum of...
a. A system has two processes and three identical resources. Each process needs a maximum of two resources. Is deadlock possible? Explain your answer. b. A system has 4 processes, P1 through P4, and 5 types of resources, R1 through R5. Existing resource vector E = (3, 2, 1, 2, 2) Current allocation matrix C = R1 R2 R3 R4 R5 P1 1 1 0 0 0 P2 0 0 1 0 0 P2 1 0 0 20 P4 0...
Part B (10) Deadlock Avoidance Consider the following maximum-claim reusable resource system with four processes and...
Part B (10) Deadlock Avoidance Consider the following maximum-claim reusable resource system with four processes and three resource types. The maximum claim matrix is given by C [4 3 5 11 1 41 1 4 6 13 1 6] where Cij denote maximum claim of process i for resourcej. The total units of each resource type are given by the vector (5, 8, 15). The current allocation of resources is given by the matrix To 1 4] 2 0 1...
Consider the following snapshot of a system: Process РО P1 P2 P3 P4 Allocation A B...
Consider the following snapshot of a system: Process РО P1 P2 P3 P4 Allocation A B C D 2013 2 2 1 0 3 1 2 1 0 4 1 0 4 2 1 2 Max A B C D 5 1 1 6 3 2 1 1 3 2 2 1 4 6 1 2 5 3 2 5 Using the banker's algorithm, determine whether or not each of the following states is unsafe. If the state is safe,...
Operating System Theory and Design 04-a) Detect if the following system has a deadlock or not....
Operating System Theory and Design
04-a) Detect if the following system has a deadlock or not. Prove your answer. If it has a deadlock then terminates it without using the restart of the computer method. (3 POINTS) R1 0 P1 P2 R2
In a system consisting of four processes and five resource types, the current allocation and maximum...
In a system consisting of four processes and five resource types, the current allocation and maximum needs are as follows Process PO P1 P2 P3 Allocation 10211 20110 11010 Maximum 11213 22210 21310 11221 Available 00x12 What is the smallest value of 'x' that can keep the system in a safe state? Once you find the 'x value, find a safe execution order using the Safety Algorithm we discussed in the lecture. Include a step-by-step walk-through of the Safety Algorithm
1. (10 pts) Find safe states/safe executing sequences. If none, explain why. Show your calculation step...
1. (10 pts) Find safe states/safe executing sequences. If none, explain why. Show your calculation step by step. Three types of resources: A, B, and C. Six processes: PO, P1, P2, P3, P4, and P5. The 'has', 'max', and 'free' tables are as follows. (Stepwise calculation is 6 pts and the result is 4 pts.) Has Max Free A B C A B C | B C PO 1 O 1 2 9 5 L 5 2 P1 1 1...
Please give an explanation for the answers as well. 1. A system has three processes (P1, P2, and P3) and three resources (R1, R2, and R3). There is one instance of RI, two instances of R2, and three instances of R3. PI holds RI and one instance of R3 and is requesting one instance from R2. P2 holds one instance of R3 and is requesting RI and one instance from R2. P3 holds two instances of R2 and one instance...
a. A system has two processes and three identical resources. Each process needs a maximum of two resources. Is deadlock possible? Explain your answer. b. A system has 4 processes, P1 through P4, and 5 types of resources, R1 through R5. Existing resource vector E = (3, 2, 1, 2, 2) Current allocation matrix C = R1 R2 R3 R4 R5 P1 1 1 0 0 0 P2 0 0 1 0 0 P2 1 0 0 20 P4 0...
Part B (10) Deadlock Avoidance Consider the following maximum-claim reusable resource system with four processes and three resource types. The maximum claim matrix is given by C [4 3 5 11 1 41 1 4 6 13 1 6] where Cij denote maximum claim of process i for resourcej. The total units of each resource type are given by the vector (5, 8, 15). The current allocation of resources is given by the matrix To 1 4] 2 0 1...
Consider the following snapshot of a system: Process РО P1 P2 P3 P4 Allocation A B C D 2013 2 2 1 0 3 1 2 1 0 4 1 0 4 2 1 2 Max A B C D 5 1 1 6 3 2 1 1 3 2 2 1 4 6 1 2 5 3 2 5 Using the banker's algorithm, determine whether or not each of the following states is unsafe. If the state is safe,...
Operating System Theory and Design
04-a) Detect if the following system has a deadlock or not. Prove your answer. If it has a deadlock then terminates it without using the restart of the computer method. (3 POINTS) R1 0 P1 P2 R2
In a system consisting of four processes and five resource types, the current allocation and maximum needs are as follows Process PO P1 P2 P3 Allocation 10211 20110 11010 Maximum 11213 22210 21310 11221 Available 00x12 What is the smallest value of 'x' that can keep the system in a safe state? Once you find the 'x value, find a safe execution order using the Safety Algorithm we discussed in the lecture. Include a step-by-step walk-through of the Safety Algorithm
1. (10 pts) Find safe states/safe executing sequences. If none, explain why. Show your calculation step by step. Three types of resources: A, B, and C. Six processes: PO, P1, P2, P3, P4, and P5. The 'has', 'max', and 'free' tables are as follows. (Stepwise calculation is 6 pts and the result is 4 pts.) Has Max Free A B C A B C | B C PO 1 O 1 2 9 5 L 5 2 P1 1 1...
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