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QUICK FIT ALGORITHAMS
Here we keep apart lists for holes and processes. Therefore this reduces the searching time for holes
Hole list and Process list. If we organize the list of holes in an ascending order we are able to easily find out the holes according to the size. And we are able to easily insert the processes into the holes.
But here it will be extremely difficult to merge some holes which are created in between two processes. For the reason that we are using separate lists for process and holes.
What is thrashing? It is a method in virtual memory schemes when the processor spends most of its time swapping pages, rather than implementing instructions. This is because o
How is memory management done using linked lists? Each one node of the l list will have 4 fields as follows 1-this tells whether it s a hole or a process 2-starting ad
bootstrap
Safety algorithm : This is to make sure if the system is in safe state or not. It may need an order of m x n2 operation to determine if the state of the system is safe or not.
Define the OS/2 threads code The sample program in Listing is very similar to the NetWare example. OS/2 commands are substituted for the pseudocode commands controlling thread
Consider a scenario of post mailbox, there are two processes named sender S and receiver R. Both processes can communicate with each other by name along with message. You need to I
describe competing process
basic advantage of using interrupt initiated data transfer over transfer under program control without an interrupt
Q. What is the major difficulty that a programmer should overcome in writing an operating system for a real-time environment? Answer: The major difficulty is keeping the oper
What are files and explain the access methods for files? File definition Attributes, operations and types Direct access Sequential access with diagram Other access
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