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A Throughput-Driven scheduling algorithm of Differentiated Service for Web Cluster

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Wuhan University Journal of Natural Sciences 2006年第1期11卷 88-92页

作者： YAN Cai-rong SHEN Jun-yi PENG Qin-ke WAN Yong-quan Software Institute Xi＇ an Jiaotong University Xi＇ an 710049 Shaanxi China

Requests distribution is an key technology for Web cluster server. This paper presents a throughput-driven scheduling algorithm （TDSA）. The algorithm adopts the throughput of cluster back-ends to evaluate their load and employs the neural network model to predict the future load so that the scheduling system features a self-learning capability and good adaptability to the change of load. Moreover, it separates static requests from dynamic requests to make full use of the CPU resources and takes the locality of requests into account to improve the cache hit ratio. Experimental re suits from the testing tool of WebBench^TM show better per formance for Web cluster server with TDSA than that with traditional scheduling algorithms.

关键词： Web cluster server throughput-driven scheduling algorithm differentiated service

Wireless Sensor Network Lifetime Enhancement Using Modified Clustering and scheduling algorithm

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Circuits and Systems 2016年第8期7卷 1787-1793页

作者： K. Ramesh K. Somasundaram Department of IT Nandha Engineering College Erode India Department of CSE Vel Tech High Tech Dr.Rangarajan Dr.Sakunthala Engineering College Chennai India

Random distribution of sensor nodes in large scale network leads redundant nodes in the application field. Sensor nodes are with irreplaceable battery in nature, which drains the energy due to repeated collection of data and decreases network lifetime. scheduling algorithms are the one way of addressing this issue. In proposed method, an optimized sleep scheduling used to enhance the network lifetime. While using the scheduling algorithm, the target coverage and data collection must be maintained throughout the network. In-network, aggregation method also used to remove the unwanted information in the collected data in level. Modified clustering algorithm highlights three cluster heads in each cluster which are separated by minimum distance between them. The simulation results show the 20% improvement in network lifetime, 25% improvement in throughput and 30% improvement in end to end delay.

关键词： Clustering algorithm Wireless Sensor Networks scheduling algorithm Network Lifetime

A Novel Composite scheduling algorithm for OBS Switch with Shared Optical Buffer

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A Novel Composite Scheduling Algorithm for OBS Switch with S...

2003 International Conference on Communication Technology

作者： Hao Chi Jiangtao Luo Huandong Zhao Jianxin Wang Zhizhong Zhang and Qingji Zeng Department of Electronic Engineering Shanghai Jiaotong University

In this paper, the conservative mode and the greedy mode scheduling algorithms for optical burst switch with shared optical buffer are presented and discussed. Computer simulations compare their perfo

关键词： Optical burst switchi ng (OBS) Optical buffer Fiber delay line (FDL) scheduling algorithm Variable length packet

Optimal scheduling algorithm for Periodic Tasks in Distributed Control Systems Based on PSO

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Optimal Scheduling Algorithm for Periodic Tasks in Distribut...

2011 Chinese Control and Decision Conference（CCDC）

作者： Liu Huai is with School of Electrical & Electronic Engineering,Nanjing Normal University,Nanjing,China.Zhang Zheng is with School of Electrical & Electronic Engineering,Nanjing Normal University,Nanjing,China.Huang Jianxin and Feng Chunmei is with School of Electrical & Electronic Engineering,Nanjing Normal University,Nanjing,China

Task scheduling for Distributed Control System （DCS） influences not only on the resource utilization of system,but also on the control performance of ***,loop task is investigated and task model and system model are *** on heuristic task allocation method and Earliest Deadline First （EDF）,the task scheduling algorithm for DCS is *** the schedulable condition is *** to the relationship of the performance of DCS and sampling periods,particle swarm optimization （PSO） algorithm is adopted to optimize the performance index of *** results show that the performance index of DCS can be improved obviously under condition that guarantee the tasks are finished before their deadlines by adopting the algorithm presented in this paper.

关键词： Distributed Control System (DCS) scheduling algorithm heuristic task allocation method Particle swarm optimization (PSO)

Optimal scheduling algorithm for Multi-Tasks in Distributed Control Systems

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Optimal Scheduling Algorithm for Multi-Tasks in Distributed ...

第25届中国控制与决策会议

作者： Huai Liu School of Electrical ＆ Electronic Engineering Nanjing Normal University

ISBN: (纸本)9781467355339

There are real-time periodic tasks and non-real-time sporadic tasks in Distributed Control System （DCS） and how to schedule these tasks influences not only on the resource utilization of system, but also on the control performance of system. Firstly, task models and system model are given in this paper. A scheduling algorithm called dual-priority queue scheduling algorithm is presented for uniprocessor and the schedulable condition is given. Based on this, the task scheduling algorithm for DCS is investigated based on heuristic task allocation method. According to the relationship of the performance of DCS and sampling periods of periodic tasks, particle swarm optimization （PSO） algorithm is applied to optimize the performance index of DCS. Simulation results show that the performance index of DCS can be improved obviously in the case that the schedulability of all tasks is guaranteed by adopting the algorithm presented in this paper.

关键词： Distributed Control System (DCS) scheduling algorithm heuristic task allocation Particle swarm optimization (PSO)

A Real-Time scheduling algorithm for Hybrid Tasks in Networked Control Systems Based On Deferred Subsequent Subtasks

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A Real-Time Scheduling Algorithm for Hybrid Tasks in Network...

2010 Chinese Control and Decision Conference

作者： Huai Liu,Jianxin Huang,Chunmei Feng 1.School of Electrical & Electronic Engineering,Nanjing Normal University,Nanjing,210042

＜正＞NCS is a widely used digital control system.A loop task in NCS includes two message subtasks and a control *** three subtasks of a loop task run on different resources and must be executed in a certain *** order to meet their real-time requirement and execution order constraint,a novel scheduling algorithm is *** algorithm guarantee the execution order of subtasks of a loop task by setting subtasks different starting time and subtasks running on a same resource is scheduled based RMS *** algorithm is investigated and schedulable condition is presented.A heuristic algorithm for assigning control subtasks is given based on first-fit method and "minimizing response time" ***,the simulation experiments are *** results of experiments show that the scheduling algorithm is feasible and effective.

关键词： Networked Control System scheduling algorithm Loop Task Message Subtask Control Subtask

Review on Service Curves of Typical scheduling algorithms

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ZTE Communications 2024年第2期22卷 55-70页

作者： GAO Yuehong NING Zhi HE Jia ZHOU Jinfei GAO Chenqiang TANG Qingkun YU Jinghai Beijing University of Posts and Telecommunications Beijing 100876China ZTE Corporation Shenzhen 518057China State Key Laboratory of Mobile Network and Mobile Multimedia Tech-nology Shenzhen 518055China

In recent years,various internet architectures,such as Integrated Services(IntServ),Differentiated Services(DiffServ),Time Sensitive Networking(TSN)and Deterministic Networking(DetNet),have been proposed to meet the quality-of-service(QoS)requirements of different network ***,network calculus has found widespread application in network modeling and QoS *** calculus abstracts the details of how nodes or networks process data packets using the concept of service *** paper summarizes the service curves for typical scheduling algorithms,including Strict Priority(SP),Round Robin(RR),Cycling Queuing and Forwarding(CQF),Time Aware Shaper(TAS),Credit Based Shaper(CBS),and Asynchronous Traffic Shaper(ATS).It introduces the theory of network calculus and then provides an overview of various scheduling algorithms and their associated service *** delay bound analysis for different scheduling algorithms in specific scenarios is also conducted for more insights.

关键词： network calculus service curve scheduling algorithm QoS

A Co-design of scheduling and Control algorithm

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A Co-design of Scheduling and Control Algorithm

2003年中国智能自动化会议

作者： Hai Wu, Ronghui Yang, Jinxue Xu, Qian Li School of Information Science and Engineering Shenyang University of Technology Shenyang 110023,P.R.china,

The paper presents the emerging field of integrated control and CPU -time scheduling. An on-line feedback scheduler based on the PID control algorithm is presented. It is shown that it is possible to obtain large redu... 详细信息

关键词： Real-time system Co-design scheduling algorithm PID control

High Throughput scheduling algorithms for Input Queued Packet Switches

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Computers, Materials & Continua 2022年第1期70卷 1527-1540页

作者： R.Chithra Devi D.Jemi Florinabel Narayanan Prasanth Department of IT Dr.Sivanthi Aditanar College of EngineeringTiruchendur628205India Department of CSE Dr.Sivanthi Aditanar College of EngineeringTiruchendur628205India School of CSE Vellore Institute of TechnologyVellore632014India

The high-performance computing paradigm needs high-speed switching fabrics to meet the heavy traffic generated by their *** switching fabrics are efficiently driven by the deployed scheduling *** this paper,we proposed two scheduling algorithms for input queued switches whose operations are based on ranking *** first,we proposed a Simple 2-Bit(S2B)scheme which uses binary ranking procedure and queue size for scheduling the ***,the Virtual Output Queue(VOQ)set with maximum number of empty queues receives higher rank than other VOQ’*** simulation,we showed S2B has better throughput performance than Highest Ranking First(HRF)arbitration under uniform,and non-uniform traffic *** further improve the throughput-delay performance,an Enhanced 2-Bit(E2B)approach is *** approach adopts an integer representation for rank,which is the number of empty queues in a VOQ *** simulation result shows E2B outperforms S2B and HRF scheduling algorithms with maximum throughput-delay ***,the algorithms are simulated under hotspot traffic and E2B proves to be more efficient.

关键词： Crossbar switch input queued switch virtual output queue scheduling algorithm high performance computing