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What do you mean by semaphore?
Semaphore: A synchronization variable that acquires on positive integer values. Invented by the Dijkstra
The names arrive from the Dutch, verhogen (increment) and proberen (test). Semaphores are elegant and easy and permit the solution of many interesting problems. They do many more than just mutual exclusion.
The performance of a file system depends upon the cache hit rate (fraction of blocks found in the cache). If it takes 1 msec to satisfy a request from the cache, but 40 msec to sat
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draw a state diagram showing the transissions of a process from creation to termination
What are the operations of processes? Process creation A process may create several new processes. The creating process is called as parent process, where as the new proce
Q. Consider the demand-paged computer system where the level of multiprogramming is currently fixed at four. The system was recently deliberate to determine utilization of CPU and
DIFFERENT MULTITHREADING MODELS Multithreading Models the majority multithreading models fall into one of the following categories of threading implementation: 1. M
What is the information associated with an open file? Various pieces of information are associated with an open file which may be: File pointer Disk location of th
Define process? What is meant by state of a process? Process is a program in implementation. A process in general includes the process stack, which consists temporary data and
Differentiate pre-emptive and non-preemptive scheduling In a pre-emptive scheduling technique, CPU can be taken away from a process if there is a requirement while in a non-pre
Example 1. The diagram illustrating the data structures of in-memory VFS objects and on-disk objects and their relationships on slide 24 of the lecture notes OSD.4. This diagram i
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