0
Rohit_goyal90@Yahoo.com
Recovery from Deadlock?
Process Termination:
->Abort all deadlocked processes.
->Abort one process at a time until the deadlock cycle is eliminated.
->In which order should we choose to abort?
Priority of the process.
How long process has computed, and how much longer to completion.
Resources the process has used.
Resources process needs to complete.
How many processes will need to be terminated?
Is process interactive or batch?
Resource Preemption:
->Selecting a victim - minimize cost.
->Rollback - return to some safe state, restart process for that state.
->Starvation - same process may always be picked as victim, include number of rollback in cost factor
What else can I help you with?
What are the various strategies are used to handle deadlock and what is centralized and distributed deadlock detection and prevention?
There are four strategies of dealing with deadlock problem:1. The Ostrich ApproachJust ignore the deadlock problem altogether.2. Deadlock Detection and RecoveryDetect deadlock and, when it occurs, take steps to recover.3. Deadlock AvoidanceAvoid deadlock by careful resource scheduling.4. Deadlock PreventionPrevent deadlock by resource scheduling so as to negate at least one of the four conditions.
What is the difference among deadlock avoidance detection and prevention?
Deadlock prevention is the name of the technique that is designed to get rid of deadlocks by changing the specifications of the system , that is the system design change. This is , basically , about how requests about resources are made and how they are permitted. However , deadlock avoidance is a technique that aims to check deadlock possibility dynamically and decides whether it is safe to grant a resource or not. It ,definitely , needs extra information about potential use of resources for each process. Deadlock Prevention: Preventing deadlocks by constraining how requests for resources can be made in the system and how they are handled (system design). The goal is to ensure that at least one of the necessary conditions for deadlock can never hold. Deadlock Avoidance: The system dynamically considers every request and decides whether it is safe to grant it at this point, The system requires additional apriori information regarding the overall potential use of each resource for each process. Allows more concurrency. Similar to the difference between a traffic light and a police officer directing traffic.
What is an antonym for the word deadlock?
The antonym for deadlock is agreement.
When was Holy Deadlock created?
Holy Deadlock was created in 1934.
When was Deadlock - film - created?
Deadlock - film - was created in 1931.
When was Wedlock Deadlock created?
Wedlock Deadlock was created in 1947.
What are the release dates for House of Dreams - 2004 To Deadlock or Not to Deadlock 1-3?
House of Dreams - 2004 To Deadlock or Not to Deadlock 1-3 was released on: USA: 22 January 2004
How many pages does Holy Deadlock have?
Holy Deadlock has 311 pages.
What are the different method for handling deadlock?
deadlock handling by 2phase protocol
When was Wolves - Deadlock album - created?
Wolves - Deadlock album - was created in 2007.
When was Deadlock - metal band - created?
Deadlock - metal band - was created in 1997.
What is false deadlock?
the coordinator conculde incorrectly that a deadlock exist and kills some process --------------------------- Detecting a non existent deadlock in distributed system has been referred as false deadlock and it may occur due to communication delay.. ---->Ashok Paranjothi
