Distributed System Distributing the computation among the several processor is called a distributed system. Multiple processor does not share the memory or clock because they have their own local memory.…

Multithreading Models Some operating systems provide a combined user-level thread and a kernel-level thread installation. In a mutual system, multiple threads in the identical application can run in corresponding on…

Mass Storage System Mass Storage System - This topic is about physical memory which use as secondary memory. Magnetic Disks A magnetic disk is a storage device which uses a…

Network Operating System Network operating system use a server to run on and provides server capacity manage user, data, groups, applications, security and other networking functions. Server is a computer…

Threading Issues Following threading issues are: The fork() and exec() system call Signal handling Thread cancelation Thread local storage Scheduler activation The fork() and exec() system call In case if…

I/O Hardware IO Hardware - Computers work on many types of devices. General types include storage devices e.g. disks, transmitters network cards, modems and human interface devices e.g. display, keyboard…

Real Time System Real time system is an example of a general purpose operating system. This system is used when the requirements are inelastic for data flow or operations of…

OS Memory Management OS Memory management is basically the core functionality of an operating system which manages the primary memory. Memory management retains pathway of each and every memory location…

Polling VS Interrupts Polling Polling is a method by which a host waits for controller’s response. It is a looping procedure, reading the status-register over and over till the busy…

Operating system services Operating system have an environment for program execution. operating system provides several services for program and for the user of those program. Different operating systems provides different…