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Q. Why is it significant to balance file system I/O among the disks as well as controllers on a system in a multitasking environment?
Answer: A system can perform merely at the speed of its slowest bottleneck. Disks or disk controllers are habitually the bottleneck in modern systems as their individual performance can't keep up with that of the CPU and system bus. By balancing I/O among disks as well as controllers neither an individual disk nor a controller is overwhelmed therefore that bottleneck is avoided.
Synchronization In communication among processes messages passed may be blocking or nonblocking - also called as synchronous and asynchronous. Blocking send : The sending pr
Demand paging gives that pages could only be brought into memory if the running process acts them. This is usually referred to as lazy evaluation as only those pages operated by
Optimal page replacement An optimal page replacement algorithm has the least page fault rate of all algorithms. The algorithm states that a 'replace the page that will not be
WHAT ARE THE ADVANTAGES AND DISADVANTAGES OF DUAL MODE OPERATION OF OPERATING SYSTEM>?
SSTF stands for Abbreviation of SSTF is Shortest-Seek-time-first scheduling
why we say " OS is a resource allocator" and “OS is a control program"?
Explain Process scheduling Process scheduling consists of the subsequent sub-functions: 1. Scheduling : Selects the process to be implement next on the CPU 2. D
What are turnaround time and response time? Turnaround time is the interval among the submission of a job and its completion. Response time is the interval among submission
The objects that a program can access directly are those objects which are referenced by local vari-ables on the processor stack, or by any global/static variables that refer to ob
Define UFD and MFD. In the two-level directory structure, every user has her own user file directory (UFD). Every UFD has a similar structure, but lists only the files of a one
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