Deadlock occurs when each process holds a resource and wait for other resource held by any other process. Necessary conditions for deadlock to occur are Mutual Exclusion, Hold and Wait, No Preemption and Circular Wait. In this no process holding one resource and waiting for another get executed. For example, in the below diagram, Process 1 is holding Resource 1 and waiting for resource 2 which is acquired by process 2, and process 2 is waiting for resource 1. Hence both process 1 and process 2 are in deadlock.
Starvation is the problem that occurs when high priority processes keep executing and low priority processes get blocked for indefinite time. In heavily loaded computer system, a steady stream of higher-priority processes can prevent a low-priority process from ever getting the CPU. In starvation resources are continuously utilized by high priority processes. Problem of starvation can be resolved using Aging. In Aging priority of long waiting processes is gradually increased.
Difference between Deadlock and Starvation:
|1.||All processes keep waiting for each other to complete and none get executed||High priority processes keep executing and low priority processes are blocked|
|2.||Resources are blocked by the processes||Resources are continuously utilized by high priority processes|
|3.||Necessary conditions Mutual Exclusion, Hold and Wait, No preemption, Circular Wait||Priorities are assigned to the processes|
|4.||Also known as Circular wait||Also know as lived lock|
|5.||It can be prevented by avoiding the necessary conditions for deadlock||It can be prevented by Aging|
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- Deadlock, Starvation, and Livelock
- Difference between Deadlock Prevention and Deadlock Avoidance
- Starvation in DBMS
- Starvation and Aging in Operating Systems
- Deadlock in DBMS
- Deadlock Prevention And Avoidance
- Deadlock Detection And Recovery
- Deadlock detection in Distributed systems
- Deadlock Detection in Distributed Systems
- Conditions for Deadlock in Operating System
- Operating Systems | Deadlock | Question 2
- Operating Systems | Deadlock | Question 1
- Deadlock Ignorance in Operating System
- Introduction of Deadlock in Operating System
- Recovery from Deadlock in Operating System
- Deadlock Detection Algorithm in Operating System
- Hierarchical Deadlock Detection in Distributed System
- Introduction to TimeStamp and Deadlock Prevention Schemes in DBMS
- Program for Deadlock free condition in Operating System
- Chandy-Misra-Haas's Distributed Deadlock Detection Algorithm
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