2012 IEEE 20th International Workshop on Quality of Service最新文献_第3页

Video quality estimator for wireless mesh networks 无线网状网络视频质量估计器

2012 IEEE 20th International Workshop on Quality of Service Pub Date : 2012-06-04 DOI: 10.1109/IWQoS.2012.6245980

Elisangela Aguiar, Andre Riker, A. Abelém, E. Cerqueira, Mu Mu

引用次数: 35

Elite: Differentiating the playback lag for peer-assisted live video streaming 精英:区分同行辅助直播视频流的播放延迟

2012 IEEE 20th International Workshop on Quality of Service Pub Date : 2012-06-04 DOI: 10.1109/IWQoS.2012.6245971

Shiping Li, Jin Zhao, Xin Wang

引用次数: 4

Fast cloned-tag identification protocols for large-scale RFID systems 大规模RFID系统的快速克隆标签识别协议

2012 IEEE 20th International Workshop on Quality of Service Pub Date : 2012-06-04 DOI: 10.1109/IWQoS.2012.6245962

Kai Bu, Xuan Liu, Bin Xiao

引用次数: 15

Mining frequent partial periodic patterns in spectrum usage data 频谱使用数据中频繁部分周期模式的挖掘

2012 IEEE 20th International Workshop on Quality of Service Pub Date : 2012-06-04 DOI: 10.1109/IWQoS.2012.6245969

Pei Huang, Chin-Jung Liu, Li Xiao, Jin Chen

引用次数: 3

Simulating CSMA/CA behavior for performance evaluation of multi-hop wireless networks 模拟CSMA/CA行为用于多跳无线网络的性能评估

2012 IEEE 20th International Workshop on Quality of Service Pub Date : 2012-06-04 DOI: 10.1109/IWQOS.2012.6245968

Akihito Hiromori, H. Yamaguchi, T. Higashino

{"title":"Simulating CSMA/CA behavior for performance evaluation of multi-hop wireless networks","authors":"Akihito Hiromori, H. Yamaguchi, T. Higashino","doi":"10.1109/IWQOS.2012.6245968","DOIUrl":"https://doi.org/10.1109/IWQOS.2012.6245968","url":null,"abstract":"In this paper, we design an efficient method of simulating wireless networks that use CSMA/CA-based protocols in the MAC layer. In the method, a stochastic model to estimate the CSMA/CA frame transmission delay is naturally incorporated into the conventional fully event-based model. The stochastic model can simplify the interactions between a frame transmitter and its surrounding nodes, which alleviates the event scheduling overhead in simulation. The important feature is that the stochastic model can be applied in “per-node” and “time” basis, i.e. we may simulate the behavior of some intended nodes precisely while the others are simplified by the stochastic mode to save computational resources. To the best of our knowledge, this is the first approach to coexistence of the stochastic and event-based models in wireless multi-hop network simulation. We have implemented this scheme in a commercial network simulator and conducted several experiments. From the results, it is confirmed that the proposed method could perform simulation of frame transmission much faster than the fully event-based simulation achieving the same accuracy as the conventional model.","PeriodicalId":178333,"journal":{"name":"2012 IEEE 20th International Workshop on Quality of Service","volume":"229 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131544204","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: 0

Adaptive dynamic priority scheduling for virtual desktop infrastructures 虚拟桌面基础架构的自适应动态优先级调度

2012 IEEE 20th International Workshop on Quality of Service Pub Date : 2012-06-04 DOI: 10.1109/IWQoS.2012.6245988

Jinho Hwang, Timothy Wood

{"title":"Adaptive dynamic priority scheduling for virtual desktop infrastructures","authors":"Jinho Hwang, Timothy Wood","doi":"10.1109/IWQoS.2012.6245988","DOIUrl":"https://doi.org/10.1109/IWQoS.2012.6245988","url":null,"abstract":"Virtual Desktop Infrastructures (VDIs) are gaining popularity in cloud computing by allowing companies to deploy their office environments in a virtualized setting instead of relying on physical desktop machines. Consolidating many users into a VDI environment can significantly lower IT management expenses and enables new features such as “available-anywhere” desktops. However, barriers to broad adoption include the slow performance of virtualized I/O, CPU scheduling interference problems, and shared-cache contention. In this paper, we propose a new soft real-time scheduling algorithm that employs flexible priority designations (via utility functions) and automated scheduler class detection (via hypervisor monitoring of user behavior) to provide a higher quality user experience. We have implemented our scheduler within the Xen virtualization platform, and demonstrate that the overheads incurred from co-locating large numbers of virtual machines can be reduced from 66% with existing schedulers to under 2% in our system. We evaluate the benefits and overheads of using a smaller scheduling time quantum in a VDI setting, and show that the average overhead time per scheduler call is on the same order as the existing SEDF and Credit schedulers.","PeriodicalId":178333,"journal":{"name":"2012 IEEE 20th International Workshop on Quality of Service","volume":"39 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123522959","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

Network Calculus and mixed-integer LP applied to a switched aircraft cabin network 网络演算和混合整数LP在交换飞机机舱网络中的应用

2012 IEEE 20th International Workshop on Quality of Service Pub Date : 2012-06-04 DOI: 10.1109/IWQoS.2012.6245986

Emanuel Heidinger, Nils Kammenhuber, A. Klein, G. Carle

引用次数: 5

Next hop of strict partial order for NSFIB construction & aggregation NSFIB构建和聚合的严格偏序下一跳

2012 IEEE 20th International Workshop on Quality of Service Pub Date : 2012-06-04 DOI: 10.1109/IWQoS.2012.6245992

Qing Li, Mingwei Xu, Meng Chen

引用次数: 0

Understanding the impact of Denial of Service attacks on Virtual Machines 了解拒绝服务攻击对虚拟机的影响

2012 IEEE 20th International Workshop on Quality of Service Pub Date : 2012-06-04 DOI: 10.1109/IWQoS.2012.6245975

R. Shea, Jiangchuan Liu

{"title":"Understanding the impact of Denial of Service attacks on Virtual Machines","authors":"R. Shea, Jiangchuan Liu","doi":"10.1109/IWQoS.2012.6245975","DOIUrl":"https://doi.org/10.1109/IWQoS.2012.6245975","url":null,"abstract":"Virtualization, which allows multiple Virtual Machines (VMs) to reside on a single physical machine, has become an indispensable technology for today's IT infrastructure. It is known that the overhead for virtualization affects system performance; yet it remains largely unknown whether VMs are more vulnerable to networked Denial of Service (DoS) attacks than conventional physical machines. A clear understanding here is obviously critical to such networked virtualization system as cloud computing platforms. In this paper, we present an initial study on the performance of modern virtualization solutions under DoS attacks. We experiment with the full spectrum of modern virtualization techniques, from paravirtualization, hardware virtualization, to container virtualization, with a comprehensive set of benchmarks. Our results reveal severe vulnerability of modern virtualization: even with relatively light attacks, the file system and memory access performance of VMs degrades at a much higher rate than their non-virtualized counterparts, and this is particularly true for hypervisor-based solutions. We further examine the root causes, with the goal of enhancing the robustness and security of these virtualization systems. Inspired by the findings, we implement a practical modification to the VirtIO drivers in the Linux KVM package, which effectively mitigates the overhead of a DoS attack by up to 40%.","PeriodicalId":178333,"journal":{"name":"2012 IEEE 20th International Workshop on Quality of Service","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121978160","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: 56

Improving the throughput and delay performance of network processors by applying push model 应用推送模型提高网络处理器的吞吐量和延迟性能

2012 IEEE 20th International Workshop on Quality of Service Pub Date : 2012-06-04 DOI: 10.1109/IWQoS.2012.6245973

B. Liu, Bo Yuan, Huichen Dai, Hongbo Zhao, Jia Yu, L. Bhuyan

引用次数: 1