Disk Scheduling Algorithms
When the disk controller finishes the current request it has to decide which request to process next. The OS can choose one disk scheduling algorithms
Operating System
Device Management
Device management is another major function of an operating system. In the device management task of the operating is to manage I/O and storage devices such as printers, card readers, tapes, disk and supporting devices such as the control unit and control channel. The major tasks of the operating system with respect to device management …
Resource Allocation Graph
Resource Allocation graph technique is used for deadlock avoidance when there is a single instance of every resource. In resource allocation graph for
Free-Space List Management
The capacity of any disk is limited (e.g., 500 GB, 1TB etc.). Thus, to accommodate our new files, the space freed by deleted files is reused by the system by maintaining a free-space list.
Program to create an orphan process
An orphan process is a process whose parent has finished. Suppose P1 and P2 are two process such that P1 is the parent process and P2
Deadlock Avoidance
In deadlock avoidance, the operating system is provided with extra information related to all resources any process will require during its lifetime.
File Allocation Method
We all save our files in the hard disk. To make the maximum out of the disk we space the files have to be stored in an efficient manner.
File Management
File management is another important function of an operating system. File management is necessary so that the operating system can map files onto physical devices
Uni-programming vs Multi Programming vs Time Sharing
In batch processing a batch of similar kinds of jobs are made and submitted one by one to the system. From within the batch the jobs are processed one by one.
Deadlock Prevention
Deadlock prevention means to prevent at least one of the necessary conditions from occurring. The methods to prevent the individual conditions are discussed below: