CS604 GDB 1 Solution | CS604 Latest solved Gdb 2021

 CS604 GDB 1 Solution | CS604 Latest solved Gdb 2021

GDB

Suppose a system has not implemented any deadlock prevention and avoidances measurement. Therefore, it has to run the deadlock detection algorithm in case deadlock has occurred in a system. Following two strategies can be adopted to recover the system from a deadlock.

1. Abort the one or more processes to break the circular wait.
2. Preempt some resources from one or more processes to break the deadlock.

 

ANSWER:

1. Abort the one or more processes to break the circular wait.

Process Termination

To eliminate the deadlock, we can simply kill one or more processes. For this, we use two methods: 

• (a). Abort all the Deadlocked Processes: 
  Aborting all the processes will certainly break the deadlock, but with a great expense. The deadlocked processes may have computed for a long time and the result of those partial computations must be discarded and there is a probability to recalculate them later. 
   
• (b). Abort one process at a time until deadlock is eliminated: 
  Abort one deadlocked process at a time, until deadlock cycle is eliminated from the system. Due to this method, there may be considerable overhead, because after aborting each process, we have to run deadlock detection algorithm to check whether any processes are still deadlocked. 

 

 

In your opinion, which option will be considered more suitable to recover the system from a deadlock? Write a concise and to the point answer with valid reasons.

 Read the following instructions carefully before sending your comments:

1.    Your discussion must be based on logical facts and in-depth knowledge of topic is must for that.

2.    Your comments should be relevant to the topic i.e., clear and concise. (Maximum 4-5 lines answer).

3.    You should post your comments on Graded Discussion Board & not on the Regular MDB. Both will run parallel to each other during the time specified above.

4.    Books, websites, and other reading material may be consulted before posting your comments.

5.    No extra time will be given for discussion.

6.    You cannot participate in the discussion after the due date or through e-mail.

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