0
What else can I help you with?
What causes Deadlock?
A set of processes is deadlock if each process in the set is waiting for an event that only another process in the set can cause.
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
What is deadlock and explain it?
A deadlock is when both sides can't agree on a decision or when something is stuck and can't move. In technology, a deadlock is a situation where a group of processes are permanently blocked as a result of each process having acquired a subset of the resources needed for its completion and waiting for release of the remaining resources held by others in the same group-thus making it impossible for any of the process to proceed.
What are the difficulties that may arise when the process is rolled back as a result of deadlock?
starvation
What is the difference between deadlock preventation and dead lock detection?
The difference is exactly what you have just stated: deadlock prevention is used to stop deadlocks before they happen (to prevent them), while deadlock detection is used to figure out when a process has deadlocked (to detect it).
When a process is rolled back as a result of deadlock the difficulty arises is?
The difficulty that arises when a process is rolled back due to deadlock is ensuring that the system can recover to a consistent state. This involves undoing the actions taken by the rolled back process and potentially restarting or reordering other processes to resolve the deadlock. It can be a complex and time-consuming task to manage the rollback process efficiently and ensure that no further deadlocks occur.
What is difference between starvation and deadlock in os?
DEADLOCK:1) Deadlock process is permanently blocked because the required resource never becomes available.2) The resource under contention is not in continuous use.STARVATION:1) In starvation, it is not certain that a process will ever get the requested resources.2) the resource under contention is in continuous use.
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 deadlock in rdbms?
A deadlock is a situation in which two or more competing actions are each waiting for the other to finish, and thus neither ever does. In an operating system, a deadlock is a situation which occurs when a process enters a waiting state because a resource requested by it is being held by another waiting process, which in turn is waiting for another resource. If a process is unable to change its state indefinitely because the resources requested by it are being used by another waiting process, then the system is said to be in a deadlock.
What is the difference in deadlock and process synchronization?
A deadlock is a situation whereÊtwo or more competing actions or processes run at the same time while they shouldn't hence no task is either completed, while process synchronization is where two or more process work together concurrently with each other to complete a task.
Is it possible to occur deadlock in one process during rsource allocation?
No, deadlock occurs when two or more processes are waiting for resources held by each other, leading to a stalemate. In a single process, there is no contention for resources between different processes, so deadlock cannot occur.
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.
