Disadvantage: A low priority process may hinder a high priority process by not making its frames available to the high priority process.Advantage: The pages in memory for a particular process and the page fault ratio is affected by the paging behavior of only that process.Local replacement: When a process needs a page which is not in the memory, it can bring in the new page and allocate it a frame from its own set of allocated frames only.

The number of frames allocated to a process can also dynamically change depending on whether you have used global replacement or local replacement for replacing pages in case of a page fault. Advantage: All the processes share the available frames according to their needs, rather than equally.For instance, in a system with 62 frames, if there is a process of 10KB and another process of 127KB, then the first process will be allocated (10/137)*62 = 4 frames and the other process will get (127/137)*62 = 57 frames. Proportional allocation: Frames are allocated to each process according to the process size.ДЇor a process p i of size s i, the number of allocated frames is a i = (s i/S)*m, where S is the sum of the sizes of all the processes and m is the number of frames in the system.Allocation of a large number of frames to a small process will eventually lead to the wastage of a large number of allocated unused frames. Disadvantage: In systems with processes of varying sizes, it does not make much sense to give each process equal frames.The three frames which are not allocated to any process can be used as a free-frame buffer pool. For instance, if the system has 48 frames and 9 processes, each process will get 5 frames. Equal allocation: In a system with x frames and y processes, each process gets equal number of frames, i.e.The two algorithms commonly used to allocate frames to a process are: Secondly, there should be enough frames to hold all the different pages that any single instruction can reference. The first reason is, as less number of frames are allocated, there is an increase in the page fault ratio, decreasing the performance of the execution of the process. This constraint is supported by two reasons. At least a minimum number of frames should be allocated to each process.You cannot allocate more than the total number of available frames.

Program for Binary To Decimal Conversion.

Complexity of different operations in Binary tree, Binary Search Tree and AVL tree.

Introduction of Operating System - Set 1.

Network Devices (Hub, Repeater, Bridge, Switch, Router, Gateways and Brouter).

Page Replacement Algorithms in Operating Systems.

Program for Decimal to Binary Conversion.

ISRO CS Syllabus for Scientist/Engineer Exam.

ISRO CS Original Papers and Official Keys.

GATE CS Original Papers and Official Keys.

Crazytalk 8 delete unused frames