Designing A Multi Tasking Processes By Scheduler Skeleton And Data Algorithms

The Operating System manages the flow of data and tells the processor what component needs to be doing. It does this my relaying one piece of information at a time but done so fast it seems it is doing it all at the same time. It does this by giving the information to the processer in computer language, so it can understand.

Processor: A computer processer, otherwise known as the CPU (Central Processing Unit) is a part of the computer that receives input and decides that the output will be. Many modern CPUs are capable of processing trillions of calculations per second. The speed of a processor measured by how many operations a CPU can do in one second; this is done in MHz or GHz (Megahertz or Gigahertz). A processer with the speed of 1 MHz does 1,000,000 operations per second, and a 1GHz processer does 1,000,000,000 operations per second. This is known as the clock speed.

Busy waiting is a technique in which a process repeatedly checks to see if a condition is true without getting the processor time. While a process is in its critical section, any other process that tries to enter its critical section must loop continuously to get the critical section. This will make the process eat CPU (usually). That is just busy for waiting the processor time.

Generally processes can be described as I/O bound or CPU bound. I/O bound spends more time in doing I/O operations rather than other computations. CPU bound is contrast to I/O bound, which spends time doing all other

The process needs many resources to complete certain tasks these resources include CPU time, memory, files and I/O devices for its task to be complete. These resources are either allocated to the process when it is running or is given to the process when it is created.

6.2) Preemptive scheduling allows a process to be invoked/disturbed in the middle of its execution by taking the CPU and assigning it to another process which is in queue where as in case of NonPreemptive scheduling, process will give up on CPU only when the current process is executed and finished.

Ans: -> Preemptive scheduling: It allows a process to be interrupting in the middle of Its execution, and takes the CPU away and allocate it to another

Short-term: First it selects a process that’s already in memory and ready to execute. Then it allocates the CPU to it.

In Symmetric Multiprocessor systems performance is high since each processor will have its own CPU, registers and cache. The processes will be allocated to each processor separately and each process runs on its own. So, if there are 3 processes then there will be 3 CPU’s which runs simultaneously and hence all the 3 processes will be completed at the same time. But in Asymmetric Multiprocessor systems performance is not high as symmetric because the operating system can process only one request at a time. Only after the process allocated

for the next time slot of a core can consume a lot of time in

The purpose of this paper is to perform an analysis of the available four scheduling methods and how they apply to Hi-Ho Yo-Yo's dilemma. This will determine the best method to allow the company to meet the required deadlines for the increased load of work for July The four methods are first come, first served (FCFS), shortest processing time (SPT), earliest due date (EDD), and critical ratio (CR).

1. Scheduling involves the timing of operations to achieve the efficient movement of units through a system. The overall objective of scheduling is faster movement of goods and services through a facility, better customer service and dependable delivery.

Figure 3: The designed user workflow for the application. When the signal is submitted by the user, AgileFD is run twice, once with just the most recently submitted signal(s) in order to determine what data points to constrain the submitted signal(s) to, and then a second time with all submitted signals and past constraints to show what areas are being reconstructed well/poorly (green/red). Note: Selected points are indicated by turning to black.

RTOS more likely arrange all tasks according to their priorities & the importance of tasks so the task scheduling is very efficient in RTOS

In the real world, it is necessary for any manufacturing system, production system, even service system to create an effective schedule able to overcome any change that may happen in the environment in order to continue in the competitive world. Scheduling can be denoted as the process of assigning a set of activities to resources of finite capacity over limited time. Scheduling process aims to sequence the activities and states their releasing time on each machine to satisfy the desired performance criteria while considering the capacity and technological constraints[1].