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What is multiprogramming?
Multiprogramming: The management of many processes within a single processor system. Operating systems such like UNIX provide multiprogramming for shared single processor systems. In the single-processor multiprogramming system processes are interleaved in time to yield the appearance of simultaneous implementation. It is the essential theme of modern operating systems
The introduction of multiprogramming brought concerning the ability to share resources among users. Sharing engrosses not only the processor but also the following
In a multiprogramming environment guard of main memory is essential. The concern isn't only the security but as well the correct functioning of the various processes that are active if one process is able to inadvertently write into the memory space of another process then the latter process may not execute properly.
Effects of ultiprogramming on resource utilization Multiprogramming
Processor use 33%
Memory use 67%
Disk use 67%
Printer use 67%
Elapsed time 15 min
Throughput time 12 jobs/hr
Mean response time 10 min
Suppose a logic-based agent in the wumpus world has found that locations (1,1) and (2,1) do not contain a stench, but that locations (3,1) and (2,2) do contain a stench. Can the ag
What are the benefits of multiprogramming? Responsiveness : Multithreading is an interactive application may permit a program to continue running even if part of it is block
Most process abstractions support processes being destroyed when the program terminates, or in response to a specific kill directive. There are two common implementations, one a "p
what common event leads to the creation of a process?
Define deadlock avoidance. An alternative method for avoiding deadlocks is to need additional information about how resources are to be requested. Every request requires the sy
Explain about paging? Answer: Paging is a memory-management scheme that permits the physical-address space of process to be noncontiguous. Paging avoids the considerable proble
To evade race condition, the maximum number of processes that may be at the same time inside the critical section is The maximum number of processes which may be at the same t
Q. What protection problems may occur if a shared stack is used for parameter passing? Answer: The contents of the stack could be conciliation by other process(es) sharing th
Write a note on semaphores A semaphore is a tool meant for synchronizing multiple processes trying to access a shared variable. That is a semaphore is used to deal with the cri
Q. How Program execute in operating system? Program execution: Operating system loads a program in memory and executes the program. The program should be able to end its exec
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