Semi-online task assignment policies for workload consolidation in cloud computing systems

Abstract Separation is the primary consideration in cloud computing security. A series of security and safety problems would arise if a separation mechanism is not deployed appropriately, thus affecting the confidence of cloud end-users. In this paper, together with characteristics of cloud computing, the separation issue in cloud computing has been analyzed from the perspective of information flow. The process of information flow in cloud computing systems is formalized to propose corresponding separation rules. These rules have been verified in this paper and it is shown that the rules conform to non-interference security, thus ensuring the security and practicability of the proposed rules.

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A survey of data center consolidation in cloud computing systems

Computer Science Review ◽

10.1016/j.cosrev.2021.100366 ◽

2021 ◽

Vol 39 ◽

pp. 100366

Author(s):

Leila Helali ◽

Mohamed Nazih Omri

Keyword(s):

Cloud Computing ◽

Data Center ◽

Computing Systems

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Mobiles on cloud nine: Efficient task migration policies for cloud computing systems

2014 IEEE 3rd International Conference on Cloud Networking (CloudNet) ◽

10.1109/cloudnet.2014.6968993 ◽

2014 ◽

Cited By ~ 10

Author(s):

Lazaros Gkatzikis ◽

Iordanis Koutsopoulos

Keyword(s):

Cloud Computing ◽

Task Migration ◽

Computing Systems ◽

Migration Policies

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Evaluating the E-Health Cloud Computing Systems Adoption in Taiwan’s Healthcare Industry

Life ◽

10.3390/life11040310 ◽

2021 ◽

Vol 11 (4) ◽

pp. 310

Author(s):

Shih-Chia Chang ◽

Ming-Tsang Lu ◽

Tzu-Hui Pan ◽

Chiao-Shan Chen

Keyword(s):

Decision Making ◽

Cloud Computing ◽

Multiple Criteria Decision Making ◽

Cloud Service ◽

Computing System ◽

Healthcare Industry ◽

Computing Systems ◽

Factors Affecting ◽

Cloud Computing System ◽

Health Cloud

Although the electronic health (e-health) cloud computing system is a promising innovation, its adoption in the healthcare industry has been slow. This study investigated the adoption of e-health cloud computing systems in the healthcare industry and considered security functions, management, cloud service delivery, and cloud software for e-health cloud computing systems. Although numerous studies have determined factors affecting e-health cloud computing systems, few comprehensive reviews of factors and their relations have been conducted. Therefore, this study investigated the relations between the factors affecting e-health cloud computing systems by using a multiple criteria decision-making technique, in which decision-making trial and evaluation laboratory (DEMATEL), DANP (DEMATEL-based Analytic Network Process), and modified VIKOR (VlseKriterijumska Optimizacija I Kompromisno Resenje) approaches were combined. The intended level of adoption of an e-health cloud computing system could be determined by using the proposed approach. The results of a case study performed on the Taiwanese healthcare industry indicated that the cloud management function must be primarily enhanced and that cost effectiveness is the most significant factor in the adoption of e-health cloud computing. This result is valuable for allocating resources to decrease performance gaps in the Taiwanese healthcare industry.

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Enhanced Round-Robin Algorithm in the Cloud Computing Environment for Optimal Task Scheduling

Computers ◽

10.3390/computers10050063 ◽

2021 ◽

Vol 10 (5) ◽

pp. 63

Author(s):

Fahd Alhaidari ◽

Taghreed Zayed Balharith

Keyword(s):

Cloud Computing ◽

Task Scheduling ◽

Critical Role ◽

Turnaround Time ◽

Round Robin ◽

Computing Systems ◽

Time Quantum ◽

Dynamic Time ◽

High Level ◽

Level Performance

Recently, there has been significant growth in the popularity of cloud computing systems. One of the main issues in building cloud computing systems is task scheduling. It plays a critical role in achieving high-level performance and outstanding throughput by having the greatest benefit from the resources. Therefore, enhancing task scheduling algorithms will enhance the QoS, thus leading to more sustainability of cloud computing systems. This paper introduces a novel technique called the dynamic round-robin heuristic algorithm (DRRHA) by utilizing the round-robin algorithm and tuning its time quantum in a dynamic manner based on the mean of the time quantum. Moreover, we applied the remaining burst time of the task as a factor to decide the continuity of executing the task during the current round. The experimental results obtained using the CloudSim Plus tool showed that the DRRHA significantly outperformed the competition in terms of the average waiting time, turnaround time, and response time compared with several studied algorithms, including IRRVQ, dynamic time slice round-robin, improved RR, and SRDQ algorithms.

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