2009 IEEE International Symposium on Modeling, Analysis & Simulation of Computer and Telecommunication Systems最新文献_第2页

Business-oriented autonomic load balancing for multitiered Web sites 面向业务的多层Web站点的自主负载平衡

2009 IEEE International Symposium on Modeling, Analysis & Simulation of Computer and Telecommunication Systems Pub Date : 2009-12-28 DOI: 10.1109/MASCOT.2009.5366756

J. M. Ewing, D. Menascé

{"title":"Business-oriented autonomic load balancing for multitiered Web sites","authors":"J. M. Ewing, D. Menascé","doi":"10.1109/MASCOT.2009.5366756","DOIUrl":"https://doi.org/10.1109/MASCOT.2009.5366756","url":null,"abstract":"Autonomic computing systems are able to adapt to changing environments (such as changes in the workload intensity or component failures) in a way that preserves highlevel operational goals, such as service level objectives. This paper focuses on autonomic computing systems that are self-optimizing and self-configuring. More specifically, the paper presents the detailed design of an autonomic load balancer (LB) for multi-tiered Web sites. It is assumed that customers can be categorized into distinct classes (gold, silver, and bronze) according to their business value to the site. While the example used in the paper is that of an auction site, the approach can be easily applied to any other Web site. The autonomic LB is able to dynamically change its request redirection policy as well as its resource allocation policy, which determines the allocation of servers to server clusters, in a way that maximizes a business-oriented utility function. The autonomic LB was evaluated through very detailed and comprehensive simulation experiments and was compared against a round-robin LB and against a situation where each customer category has a dedicated number of servers. The results showed that the autonomic LB outperforms the other load balancing approaches in terms of providing a higher utility for highly dynamic workloads.","PeriodicalId":275737,"journal":{"name":"2009 IEEE International Symposium on Modeling, Analysis & Simulation of Computer and Telecommunication Systems","volume":"191 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132629131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16

On finding the right balance between fairness and efficiency in WiMAX scheduling through analytical modeling 基于分析建模的WiMAX调度公平性与效率平衡研究

2009 IEEE International Symposium on Modeling, Analysis & Simulation of Computer and Telecommunication Systems Pub Date : 2009-12-28 DOI: 10.1109/MASCOT.2009.5366812

Sébastien Doirieux, B. Baynat, Thomas Begin

{"title":"On finding the right balance between fairness and efficiency in WiMAX scheduling through analytical modeling","authors":"Sébastien Doirieux, B. Baynat, Thomas Begin","doi":"10.1109/MASCOT.2009.5366812","DOIUrl":"https://doi.org/10.1109/MASCOT.2009.5366812","url":null,"abstract":"In this paper, we explore a way to find the right scheduling policy for WiMAX networks, that achieves the best compromise between an efficient use of the resource and a relative fairness among users. This problem is of primary importance as no scheduling policy has been recommended in the WiMAX standard. To do so, we develop an extension of our previous analytical model for WiMAX networks, that takes into account a more general scheduling policy than those previously studied (i.e., instantaneous throughput fairness, slot sharing fairness and opportunistic scheduling). We show that this general policy covers the two extreme cases, namely the instantaneous throughput fairness policy and the opportunistic policy, and offers intermediate policies that are good candidates for finding the right trade-off. In order to formulate the decision criterion, we introduce a new performance parameter, the mean throughput obtained by a user depending on its efficiency to use the resource. The model has a closed-form solution, and all performance parameters can be obtained instantaneously. This allows us to carry out dimensioning studies that require several thousands of evaluations, which would not be tractable with any simulation tool.","PeriodicalId":275737,"journal":{"name":"2009 IEEE International Symposium on Modeling, Analysis & Simulation of Computer and Telecommunication Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128012694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

CPM: Cooperative power management for object-based storage cluster CPM:基于对象存储集群的协同电源管理

2009 IEEE International Symposium on Modeling, Analysis & Simulation of Computer and Telecommunication Systems Pub Date : 2009-12-28 DOI: 10.1109/MASCOT.2009.5366151

Q. Wei, B. Veeravalli, Zhixiang Li

引用次数: 0

A sensitivity analysis of a new hardware-supported Global Synchronization Unit 一种新的硬件支持的全局同步单元的灵敏度分析

2009 IEEE International Symposium on Modeling, Analysis & Simulation of Computer and Telecommunication Systems Pub Date : 2009-12-28 DOI: 10.1109/MASCOT.2009.5367047

E. Lynch, G. Riley

引用次数: 1

Models for high-speed interconnection networks performance analysis 高速互连网络性能分析模型

2009 IEEE International Symposium on Modeling, Analysis & Simulation of Computer and Telecommunication Systems Pub Date : 2009-12-28 DOI: 10.1109/MASCOT.2009.5366358

D. Lugones, Daniel Franco, Eduardo Argollo, E. Luque

引用次数: 2

Connection and performance model driven optimization of pageview response time 连接和性能模型驱动的页面浏览响应时间优化

2009 IEEE International Symposium on Modeling, Analysis & Simulation of Computer and Telecommunication Systems Pub Date : 2009-12-28 DOI: 10.1109/MASCOT.2009.5366184

Dinesh Kumar, D. Olshefski, Li Zhang

引用次数: 3

Anonymous routing protocols: Impact on performance in MANETs 匿名路由协议:对manet性能的影响

2009 IEEE International Symposium on Modeling, Analysis & Simulation of Computer and Telecommunication Systems Pub Date : 2009-12-28 DOI: 10.1109/MASCOT.2009.5366143

Marga Nácher, C. Calafate, Juan-Carlos Cano, P. Manzoni

引用次数: 3

Protecting against rare event failures in archival systems 防止档案系统中的罕见事件故障

2009 IEEE International Symposium on Modeling, Analysis & Simulation of Computer and Telecommunication Systems Pub Date : 2009-12-28 DOI: 10.1109/MASCOT.2009.5366825

Avani Wildani, T. Schwarz, E. L. Miller, D. Long

{"title":"Protecting against rare event failures in archival systems","authors":"Avani Wildani, T. Schwarz, E. L. Miller, D. Long","doi":"10.1109/MASCOT.2009.5366825","DOIUrl":"https://doi.org/10.1109/MASCOT.2009.5366825","url":null,"abstract":"Digital archives are growing rapidly, necessitating stronger reliability measures than RAID to avoid data loss from device failure. Mirroring, a popular solution, is too expensive over time. We present a compromise solution that uses multi-level redundancy coding to reduce the probability of data loss from multiple simultaneous device failures. This approach handles small-scale failures of one or two devices efficiently while still allowing the system to survive rare-event, larger-scale failures of four or more devices. In our approach, each disk is split into a set of fixed size disklets which are used to construct reliability stripes. To protect against rare event failures, reliability stripes are grouped into larger super-groups, each of which has a corresponding super-parity; super-parity is only used to recover data when disk failures overwhelm the redundancy in a single reliability stripe. Super-parity can be stored on a variety of devices such as NV-RAM and always-on disks to offset write bottlenecks while still keeping the number of active devices low. Our calculations of failure probabilities show that adding super-parity allows our system to absorb many more disk failures without data loss. Through discrete event simulation, we found that adding super-groups has a significant impact on mean time to data loss and that rebuilds are slow but not unmanageable. Finally, we showed that robustness against rare events can be achieved for a fraction of total system cost.","PeriodicalId":275737,"journal":{"name":"2009 IEEE International Symposium on Modeling, Analysis & Simulation of Computer and Telecommunication Systems","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123528045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 39

On maximizing the delivery ratio of ultra low duty-cycle WSNs under real-time constraints 实时约束下超低占空比无线传感器网络传输比最大化研究

2009 IEEE International Symposium on Modeling, Analysis & Simulation of Computer and Telecommunication Systems Pub Date : 2009-12-28 DOI: 10.1109/MASCOT.2009.5366188

Fei Yang, I. Augé-Blum

引用次数: 3

TSS: Applying two-stage sampling in micro-architecture simulations TSS:在微架构模拟中应用两阶段采样

2009 IEEE International Symposium on Modeling, Analysis & Simulation of Computer and Telecommunication Systems Pub Date : 2009-12-28 DOI: 10.1109/MASCOT.2009.5366603

Zhibin Yu, Hai Jin, Jing Chen, L. John

{"title":"TSS: Applying two-stage sampling in micro-architecture simulations","authors":"Zhibin Yu, Hai Jin, Jing Chen, L. John","doi":"10.1109/MASCOT.2009.5366603","DOIUrl":"https://doi.org/10.1109/MASCOT.2009.5366603","url":null,"abstract":"Accelerating micro-architecture simulation is becoming increasingly urgent as the complexity of workload and simulated processor increases. This paper presents a novel two-stage sampling (TSS) scheme to accelerate the sampling-based simulation. It firstly selects some large samples from a dynamic instruction stream as candidates of detail simulation and then samples some small groups from each selected first stage sample to do detail simulation. Since the distribution of standard deviation of cycle per instruction (CPI) is insensitive to microarchitecture, TSS could be used to speedup design space exploration by splitting the sampling process into two stages, which is able to remove redundant instruction samples from detail simulation when the program is in stable program phase (standard deviation of CPI is near zero). It also adopts systematic sampling to accelerate the functional warm-up in sampling simulation. Experimental results show that, by combining these two techniques, TSS achieves an average and maximum speedup of 1.3 and 2.29 over SMARTS, with the average CPI relative error is less than 3%. TSS could significantly accelerate the time consuming iterative early design evaluation process.","PeriodicalId":275737,"journal":{"name":"2009 IEEE International Symposium on Modeling, Analysis & Simulation of Computer and Telecommunication Systems","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131681712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8