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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.
Now, let us discuss two related algorithms for deciding which pages to evict. The clock algorithm is one of the most popular choices. It works by keeping frames in a circular struc
Internal file structure All disk I/O is performed in units of single block, and all blocks are the similar size. It is unlikely that the physical record size will exactly match
When do we write a page from physical memory back to the disk? In general, caches have two broad types of writing policies. One approach is a write-through cache. In this case,
Single level directory: This is the easiest directory structure. All the files are controlled in the same directory, which is simple to support and understand. Few of the li
Problem: a) Define the term ‘process' and what are the different constituents of a process. b) In the three-state process model, what does each of the three states signify?
What are the requirements for solution of critical section problems? Mutual exclusion : If process p is implementing in its critical section then no other processes can be exe
What are the phases of background processing? Phases are:- Job Scheduling. Job Processing. Job Overview.
How File record length should be chosen File record length should be selected to match the data characteristics
Suppose a logical address space is 1KB, and the page-size is 16 bytes. Assume no page is in the main memory for this process initially and the pure demand paging is used. Current f
Performance of demand paging Demand paging can have an important effect on the performance of a computer system. As long as there are no page faults, the effective access time
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