scholarly journals Comparative analysis of the essential CPU scheduling algorithms

2021 ◽  
Vol 10 (5) ◽  
pp. 2742-2750
Author(s):  
Hoger K. Omar ◽  
Kamal H. Jihad ◽  
Shalau F. Hussein
Keyword(s):  
Comparative Analysis ◽  
Operating Systems ◽  
Waiting Times ◽  
Stable State ◽  
Scheduling Algorithms ◽  
High Rate ◽  
Cpu Scheduling ◽  
Significant Function ◽  
Cpu Utilization ◽  
Maximum Utilization

CPU scheduling algorithms have a significant function in multiprogramming operating systems. When the CPU scheduling is effective a high rate of computation could be done correctly and also the system will maintain in a stable state. As well as, CPU scheduling algorithms are the main service in the operating systems that fulfill the maximum utilization of the CPU. This paper aims to compare the characteristics of the CPU scheduling algorithms towards which one is the best algorithm for gaining a higher CPU utilization. The comparison has been done between ten scheduling algorithms with presenting different parameters, such as performance, algorithm’s complexity, algorithm’s problem, average waiting times, algorithm’s advantages-disadvantages, allocation way, etc. The main purpose of the article is to analyze the CPU scheduler in such a way that suits the scheduling goals. However, knowing the algorithm type which is most suitable for a particular situation by showing its full properties.

scholarly journals Design of Optimal Scheduler for Process Scheduling

2020 ◽  
Vol 9 (3) ◽  
pp. 3759-3761
Keyword(s):  
Operating Systems ◽  
Waiting Time ◽  
Arrival Time ◽  
Turnaround Time ◽  
Process Scheduling ◽  
Cpu Scheduling ◽  
Cpu Utilization ◽  
Optimal Scheduler

CPU Scheduling takes plays an important role in multiprogramming systems. There are several programs present in memory. It is the responsibility of operating systems to select the process and assign it to CPU. There are various algorithms available for CPU Scheduling. The algorithm’s performance depends on various factors like arrival time, priority etc. This paper helps to select the best algorithm by comparing various algorithms under the same condition and analyzed them based on various factors like waiting time, turnaround time, CPU utilization, Throughput.

scholarly journals CPU Scheduling Visualization

2014 ◽  
Vol 7 (1) ◽  
pp. 16-29
Author(s):  
Taqwa Flayyih Hasan
Keyword(s):  
Operating System ◽  
System Design ◽  
Real Time ◽  
Operating Systems ◽  
Scheduling Algorithms ◽  
Communications Networks ◽  
Real Time Operating System ◽  
Cpu Scheduling ◽  
Operating System Design ◽  
Visual Interfaces

Scheduling is a key concept in computer multitasking and multiprocessing operating system design, and in real-time operating system design. CPU scheduling is the basis of multiprogramming operating systems by switching the CPU among process; the operating system can make the computer more productive, scheduling algorithms are widely used in communications networks and in operating systems to allocate resources to competing tasks. In this paper, visual interfaces for CPU scheduling algorithms were designed by using Visual Basic6 language. They may use to learn users about this algorithms and how they work

ASSESSMENT OF LINUX' DATA PATH IMPLEMENTATIONS FOR DOWNLOAD AND STREAMING

2007 ◽  
Vol 17 (04) ◽  
pp. 465-481 ◽  
Author(s):  
PÅL HALVORSEN ◽  
TOM ANDERS DALSENG ◽  
CARSTEN GRIWODZ
Keyword(s):  
Operating Systems ◽  
Comprehensive Evaluation ◽  
Streaming Data ◽  
High Rate ◽  
Data Path ◽  
Power Budget ◽  
Data Movement ◽  
Technological Advances ◽  
Reduced Power Consumption ◽  
Streaming Systems

Distributed multimedia streaming systems are increasingly popular due to technological advances, and numerous streaming services are available today. On servers or proxy caches, there is a huge scaling challenge in supporting thousands of concurrent users that request delivery of high-rate, time-dependent data like audio and video, because this requires transfers of large amounts of data through several sub-systems within a streaming node. Unnecessary copy operations in the data path can therefore contribute significantly to the resource consumption of streaming operations. Despite previous research, off-the-shelf operating systems have only limited support for data paths that have been optimized for streaming. Additionally, system call overhead has grown with newer operating systems editions, adding to the cost of data movement. Frequently, it is argued that these issues can be ignored because of the continuing growth of CPU speeds. However, such an argument fails to take problems of modern streaming systems into account. The dissipation of heat generated by disks and high-end CPUs is a major problem of data centers, which would be alleviated if less power-hungry CPUs could be used. The power budget of mobile devices, which are increasingly used for streaming as well, is tight, and reduced power consumption an important issue. In this paper, we prove that these operations consume a large amount of resources, and we therefore revisit the data movement problem and provide a comprehensive evaluation of possible streaming data I/O paths in the Linux 2.6 kernel. We have implemented and evaluated several enhanced mechanisms and show how to provide support for more efficient memory usage and reduction of user/kernel space switches for content download and streaming applications. In particular, we are able to reduce the CPU usage by approximately 27% compared to the best approach without kernel modifications, by removing copy operations and system calls for a streaming scenario in which RTP headers must be added to stored data for sequence numbers and timing.

Efficient vaccine scheduler based on CPU scheduling algorithms

2021 ◽  
Author(s):  
Vasu Gondaliya ◽  
Shreya Patel ◽  
Jay Hemnani ◽  
Samir Patel
Keyword(s):  
Scheduling Algorithms ◽  
Cpu Scheduling

SOCIOLOGICAL ASSESSMENT OF THE STUDY OF PATIENTS ‘ OPINIONS ABOUT THE DRUG SUPPLY SYSTEM IN RUSSIA

2021 ◽  
Vol 9 (2) ◽  
pp. 12-17
Author(s):  
E.A. Telnova ◽  
A.V. Belova ◽  
A.A. Zagoruichenko
Keyword(s):  
Comparative Analysis ◽  
Research Methods ◽  
Significant Role ◽  
Waiting Times ◽  
Age Groups ◽  
Supply System ◽  
Drug Supply ◽  
Main Research ◽  
Law System ◽  
Popu Lation

This article analyzes the results of a sociological survey, which con- firmed the relevance of the issues of accessibility of providing medicines to various categories of citizens. The purpose of this study was to study the attitude of citizens to the existing system, as well as to identify the strengths and weaknesses of preferential security. The main research methods were: the method of studying and generalizing experience; comparative analysis; sociological survey; statistical. According to the presented data, the distribution of answers to questions is determined in % depending on the total number of respondents, including in the dynamics for the analyzed period (2019-2021). This study served as a tool for studying the key problems in obtaining preferential medicines (waiting times for a doctor to issue a prescription, the absence of a prescription in a pharmacy, the refusal of a doctor to issue medicines, etc.). Thus, the results of the conducted sociological survey showed that the LAW system plays a significant role in the structure of healthcare. At the same time, first of all, it is necessary to carry out additional work with various age groups of the popu- lation in the framework of providing information about the possibilities of the additional preferential security system.

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