Shown below are 4 processes that are deadlocked. Also shown are the costs of killing each process. Find a way to resolve the deadlock with the minimum cost. Allocated Request R1 R2 R3 P1 2 2 1 P2 202 P3 022 P4 3 1 0 R1 R2 R3 P1 101 P2 022 P3 330 P4 2 13 Available Resource V = (1,1,1) 01. P1 2. P2 3. P3 4. P4 Cost P1: C₁=4 P2: C₂=10 P3: C₂=13 P4: C₁=9 4

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Shown below are 4 processes that are deadlocked. Also shown are the costs of killing each process. Find a way to resolve the deadlock with the minimum cost.
Allocated
Request
R1 R2 R3
R1 R2 R3
P1 1 0 1
H 2 2 L
P2 0 2 2
P3 3 3 0
2 1 1 3
P4
1. P1
Available Resource V = (1,1,1)
2. P2
3. P3
P1
P2
P3
P4
4. P4
221
202
022
3 1 0
Cost
P1: C₁=4
P2: C₂=10
P3: C₂=13
P4: C₁=9
Transcribed Image Text:Shown below are 4 processes that are deadlocked. Also shown are the costs of killing each process. Find a way to resolve the deadlock with the minimum cost. Allocated Request R1 R2 R3 R1 R2 R3 P1 1 0 1 H 2 2 L P2 0 2 2 P3 3 3 0 2 1 1 3 P4 1. P1 Available Resource V = (1,1,1) 2. P2 3. P3 P1 P2 P3 P4 4. P4 221 202 022 3 1 0 Cost P1: C₁=4 P2: C₂=10 P3: C₂=13 P4: C₁=9
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