Basic IT TopicSegmentation:- Segmentation is a memory-management scheme that supports the user view of memory. A program is a collection of segments. A segment is a logical unit such as the main program, procedure, function, method, object, local variables, global variables, common block, stack, symbol table, arrays, etc. A logical-address space is a collection of segments. Each […]
Non-contiguous memory allocation In non-contiguous memory allocation, it is allowed to store the processes in non-contiguous memory locations. There are different techniques used to load processes into memory, as follows: Paging Segmentation Virtual memory paging(Demand paging) Paging Main memory is divided into a number of equal-sized blocks, are called frames. Each process is […]
Partition Selection policy: Partition Selection policy, When the multiple memory holes (partitions) are large enough to contain a process, the operating system must use an algorithm to select in which hole the process will be loaded. The partition selection algorithm is as follows: First-fit: The OS looks at all sections of free memory. The process […]