11th IEEE Real Time and Embedded Technology and Applications Symposium最新文献

Power-aware processor scheduling under average delay constraints 平均延迟约束下的功耗感知处理器调度

11th IEEE Real Time and Embedded Technology and Applications Symposium Pub Date : 2005-03-07 DOI: 10.1109/RTAS.2005.39

Fan Zhang, S. Chanson

引用次数: 13

Towards an understanding of the behavior of the single parent rule in the RTSJ scoped memory model 旨在理解RTSJ作用域内存模型中单亲规则的行为

11th IEEE Real Time and Embedded Technology and Applications Symposium Pub Date : 2005-03-07 DOI: 10.1109/RTAS.2005.56

M. T. Higuera-Toledano

引用次数: 13

Feedback-based dynamic voltage and frequency scaling for memory-bound real-time applications 基于反馈的动态电压和频率缩放，用于内存约束的实时应用

11th IEEE Real Time and Embedded Technology and Applications Symposium Pub Date : 2005-03-07 DOI: 10.1109/RTAS.2005.23

C. Poellabauer, Leo Singleton, K. Schwan

{"title":"Feedback-based dynamic voltage and frequency scaling for memory-bound real-time applications","authors":"C. Poellabauer, Leo Singleton, K. Schwan","doi":"10.1109/RTAS.2005.23","DOIUrl":"https://doi.org/10.1109/RTAS.2005.23","url":null,"abstract":"Dynamic voltage and frequency scaling is increasingly being used to reduce the energy requirements of embedded and real-time applications by exploiting idle CPU resources, while still maintaining all application's real-time characteristics. Accurate predictions of task run-times are key to computing the frequencies and voltages that ensure that all tasks' real-time constraints are met. Past work has used feedback-based approaches, where applications' past CPU utilizations are used to predict future CPU requirements. Mispredictions in these approaches can lead to missed deadlines, suboptimal energy savings, or large overheads due to frequent changes to the chosen frequency or voltage. One shortcoming of previous approaches is that they ignore other 'indicators' of future CPU requirements, such as the frequency of I/O operations, memory accesses, or interrupts. This paper addresses the energy consumptions of memory-bound real-time applications via a feedback loop approach, based on measured task run-times and cache miss rates. Using cache miss rates as indicator for memory access rates introduces a more reliable predictor of future task run-times. Even in modern processor architectures, memory latencies can only be hidden partially, therefore, cache misses can be used to improve the run-time predictions by considering potential memory latencies. The results shown in this paper indicate improvements in both the number of deadlines met and the amount of energy saved.","PeriodicalId":291045,"journal":{"name":"11th IEEE Real Time and Embedded Technology and Applications Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129897570","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: 53

A real-time performance comparison of distributable threads and event channels 可分发线程和事件通道的实时性能比较

11th IEEE Real Time and Embedded Technology and Applications Symposium Pub Date : 2005-03-07 DOI: 10.1109/RTAS.2005.5

Yuanfang Zhang, B. Thrall, Stephen Torri, C. Gill, Chenyang Lu

引用次数: 13

Scalable QoS-based resource allocation in hierarchical networked environment 分层网络环境中基于qos的可伸缩资源分配

11th IEEE Real Time and Embedded Technology and Applications Symposium Pub Date : 2005-03-07 DOI: 10.1109/RTAS.2005.47

Sourav Ghosh, R. Rajkumar, Jeffery P. Hansen, J. Lehoczky

{"title":"Scalable QoS-based resource allocation in hierarchical networked environment","authors":"Sourav Ghosh, R. Rajkumar, Jeffery P. Hansen, J. Lehoczky","doi":"10.1109/RTAS.2005.47","DOIUrl":"https://doi.org/10.1109/RTAS.2005.47","url":null,"abstract":"In this paper, we study the problem of allocating end-to-end bandwidth to each of multiple traffic flows in a large-scale network. We adopt the QoS-based resource allocation model (Q-RAM) (K-S. Lui et al., 2000), whereby each flow derives an utility based on the amount of its allocated bandwidth. Our goal therefore is to maximize the total utility derived across all network flows. The NP-hard nature of the resource allocation problem is compounded by the need to select an appropriate path between each source-destination pair. We propose a hierarchical decomposition scheme that allows the resource allocation problem to be solved in a decentralized and scalable fashion. The hierarchy we use is based on a (natural) partitioning of the network into subnets, with resource allocation decisions made on a subnet-by-subnet basis. A novel distributed transaction scheme is used to ensure that resource allocations are consistent across all the subnets traversed by each flow. We provide both analytical and experimental evidence to show that our scheme is very scalable and yet does not sacrifice the quality of the allocations.","PeriodicalId":291045,"journal":{"name":"11th IEEE Real Time and Embedded Technology and Applications Symposium","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132182314","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: 15

A distributed real-time embedded application for surveillance, detection, and tracking of time critical targets 用于监视、检测和跟踪时间关键目标的分布式实时嵌入式应用程序

11th IEEE Real Time and Embedded Technology and Applications Symposium Pub Date : 2005-03-07 DOI: 10.1109/RTAS.2005.1

J. Loyall, R. Schantz, D. Corman, J. Paunicka, Sylvester Fernandez

引用次数: 42

Process resurrection: a fast recovery mechanism for real-time embedded systems 进程复活:实时嵌入式系统的快速恢复机制

11th IEEE Real Time and Embedded Technology and Applications Symposium Pub Date : 2005-03-07 DOI: 10.1109/RTAS.2005.42

Kihwal Lee, L. Sha

引用次数: 19

On-line timestamping synchronization in distributed sensor architectures 分布式传感器体系结构中的在线时间戳同步

11th IEEE Real Time and Embedded Technology and Applications Symposium Pub Date : 2005-03-07 DOI: 10.1109/RTAS.2005.36

O. Bezet, V. Berge-Cherfaoui

引用次数: 10

Enhancing feedback control scheduling performance by on-line quantification and suppression of measurement disturbance 通过在线量化和抑制测量扰动，提高反馈控制调度性能

11th IEEE Real Time and Embedded Technology and Applications Symposium Pub Date : 2005-03-07 DOI: 10.1109/RTAS.2005.21

M. Amirijoo, J. Hansson, S. Gunnarsson, S. Son

引用次数: 22

Application-driven optimization of VLIW architectures: a hardware-software approach VLIW体系结构的应用程序驱动优化:一种硬件软件方法

11th IEEE Real Time and Embedded Technology and Applications Symposium Pub Date : 2005-03-07 DOI: 10.1109/RTAS.2005.9

A. Ferrante, G. Piscopo, S. Scaldaferri

引用次数: 11