What is a time-shared bus?

Time-shared / Common Bus (Interconnection structure in Multiprocessor System) : In a multiprocessor system, the time shar0ed bus interconnection provides a common communication path connecting all the functional units like processor, I/O processor, memory unit etc. A processor can use bus only when the bus is free.

How jobs are scheduled in multiple processor system?

In multiple-processor scheduling multiple CPU’s are available and hence Load Sharing becomes possible. In multiple processor scheduling there are cases when the processors are identical i.e. HOMOGENEOUS, in terms of their functionality, we can use any processor available to run any process in the queue.

What is multi process scheduling in OS?

Multiple processor scheduling or multiprocessor scheduling focuses on designing the scheduling function for the system which is consist of ‘more than one processor’. With multiple processors in the system, the load sharing becomes feasible but it makes scheduling more complex.

What is SMP system?

SMP (symmetric multiprocessing) is the processing of programs by multiple processors that share a common operating system and memory. In symmetric (or “tightly coupled”) multiprocessing, the processors share memory and the I/O bus or data path. A single copy of the operating system is in charge of all the processors.

What are the different types of multiprocessor systems?

There are many types of multiprocessor systems:

• Loosely coupled multiprocessor system.
• Tightly coupled multiprocessor system.
• Homogeneous multiprocessor system.
• Heterogeneous multiprocessor system.
• Shared memory multiprocessor system.
• Distributed memory multiprocessor system.
• Uniform memory access (UMA) system.
• cc–NUMA system.

What is a multi processor system?

A multiprocessor system consists of multiple processors and a method for communication between the processors. A common form of multiprocessing in computer systems is homogeneous multiprocessing, also called symmetric multiprocessing (SMP), in which two or more identical processors share a single main memory.

What are the characteristics of a good scheduling algorithm?

Characteristics of a good scheduling algorithm

• Utilization of CPU. This algorithm keeps the CPU busy by using most of it.
• Throughput. The process involves the number of works finished in a time unit and the algorithm increases the number.
• Response Time:
• Turnaround time:
• Waiting time:
• Fairness:

What are the main characteristics of an SMP?

Characteristics of SMP

• Identical: All the processors are treated equally i.e. all are identical.
• Communication: Shared memory is the mode of communication among processors.
• Complexity: Are complex in design, as all units share same memory and data bus.
• Expensive: They are costlier in nature.