2015 IEEE Real-Time Systems Symposium最新文献_第2页

Response Time Analysis with Limited Carry-In for Global Earliest Deadline First Scheduling 全球最早截止日期优先调度的有限携带响应时间分析

2015 IEEE Real-Time Systems Symposium Pub Date : 2015-12-01 DOI: 10.1109/RTSS.2015.20

Youcheng Sun, G. Lipari

引用次数: 16

Q-Offload: Quality Aware WiFi Offloading with Link Dynamics Q-Offload:质量意识WiFi卸载与链接动态

2015 IEEE Real-Time Systems Symposium Pub Date : 2015-12-01 DOI: 10.1109/RTSS.2015.30

Yi Zhang, Jiliang Wang, Yuan He, Yanrong Kang, Bo Li, Yunhao Liu

{"title":"Q-Offload: Quality Aware WiFi Offloading with Link Dynamics","authors":"Yi Zhang, Jiliang Wang, Yuan He, Yanrong Kang, Bo Li, Yunhao Liu","doi":"10.1109/RTSS.2015.30","DOIUrl":"https://doi.org/10.1109/RTSS.2015.30","url":null,"abstract":"Driven by the proliferation of mobile applications, the conflict between data communication requirement and limited battery capacity is becoming sharp on modern smartphones. Offloading mobile traffic from cellular to WiFi is widely recognized as a viable solution to improve the energy efficiency. However, through extensive field experiments, we find WiFi offloading is not always energy efficient and even consumes more energy than cellular network due to link quality variation. In addition, we also observe that practical data transmission deadline requirement and link utilization allows scheduling of data traffic to time periods with good link quality. Accordingly, we propose Q-offload, the first attempt towards energy efficient WiFi offloading with link dynamics. In Q-offload, we propose an iterative framework to achieve energy efficient WiFi offloading by exploiting good link quality while not affecting user experience. We evaluate the performance of Q-offload through both trace-driven analysis and real-world experiments. The results show that it can achieve 33.5%~55.7% energy efficiency improvement, compared with state-of-the-arts under different conditions.","PeriodicalId":239882,"journal":{"name":"2015 IEEE Real-Time Systems Symposium","volume":"320 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121350887","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: 4

Global Real-Time Semaphore Protocols: A Survey, Unified Analysis, and Comparison 全球实时信号量协议:调查、统一分析和比较

2015 IEEE Real-Time Systems Symposium Pub Date : 2015-12-01 DOI: 10.1109/RTSS.2015.8

Maolin Yang, Alexander Wieder, Björn B. Brandenburg

引用次数: 41

Improved DRAM Timing Bounds for Real-Time DRAM Controllers with Read/Write Bundling 基于读写绑定的实时DRAM控制器的改进DRAM时序限制

2015 IEEE Real-Time Systems Symposium Pub Date : 2015-12-01 DOI: 10.1109/RTSS.2015.13

L. Ecco, R. Ernst

引用次数: 29

A Time-Predictable Model of Computation 一个可预测时间的计算模型

2015 IEEE Real-Time Systems Symposium Pub Date : 2015-12-01 DOI: 10.1109/RTSS.2015.45

Anoop Bhagyanath, Tripti Jain, K. Schneider

引用次数: 4

Reducing the Implementation Overheads of IPCP and DFP 减少IPCP和DFP的实施开销

2015 IEEE Real-Time Systems Symposium Pub Date : 2015-12-01 DOI: 10.1109/RTSS.2015.35

H. Almatary, N. Audsley, A. Burns

引用次数: 8

Cache Sharing and Isolation Tradeoffs in Multicore Mixed-Criticality Systems 多核混合临界系统中的缓存共享和隔离权衡

2015 IEEE Real-Time Systems Symposium Pub Date : 2015-12-01 DOI: 10.1109/RTSS.2015.36

Micaiah Chisholm, Bryan C. Ward, Namhoon Kim, James H. Anderson

引用次数: 47

Hardware Optimizations for Anytime Perception and Control 随时感知和控制的硬件优化

2015 IEEE Real-Time Systems Symposium Pub Date : 2015-12-01 DOI: 10.1109/RTSS.2015.49

N. NischalK., Paritosh Kelkar, D. Kumar, Y. Pant, Houssam Abbas, Joseph Devietti, R. Mangharam

引用次数: 1

Tradeoffs in Real-Time Robotic Task Design with Neuroevolution Learning for Imprecise Computation 基于神经进化学习的不精确计算实时机器人任务设计权衡

2015 IEEE Real-Time Systems Symposium Pub Date : 2015-12-01 DOI: 10.1109/RTSS.2015.27

Pei-Chi Huang, L. Sentis, J. Lehman, Chien-Liang Fok, A. Mok, R. Miikkulainen

引用次数: 3

Relaxing Resource-Sharing Constraints for Improved Hardware Management and Schedulability 放宽资源共享约束，改善硬件管理和可调度性

2015 IEEE Real-Time Systems Symposium Pub Date : 2015-12-01 DOI: 10.1109/RTSS.2015.22

Bryan C. Ward

{"title":"Relaxing Resource-Sharing Constraints for Improved Hardware Management and Schedulability","authors":"Bryan C. Ward","doi":"10.1109/RTSS.2015.22","DOIUrl":"https://doi.org/10.1109/RTSS.2015.22","url":null,"abstract":"Modern computer architectures, particularly multicore systems, include shared hardware resources such as caches and interconnects that introduce timing-interference channels. Unmanaged access to such resources can adversely affect the execution time of other tasks, and lead to unpredictable execution times and associated analysis pessimism that can entirely negate the benefits of a multicore processor. To mitigate such effects, accesses to shared hardware resources should be managed, for example, by a real-time locking protocol. However, accesses to some hardware resources can be managed with more relaxed sharing constraints than mutual exclusion while still mitigating timing-interference channels. This paper presents two new classes of sharing constraints, preemptive mutual exclusion, and half-protected sharing, which are motivated by the sharing constraints of buses and caches, respectively. Synchronization algorithms are presented for both sharing constraints, where applicable, on both uni-and multi-processor systems. A fundamentally new analysis technique called idleness analysis is presented to account for the effects of blocking in globally scheduled multiprocessor systems. Experimental results suggest that these relaxed synchronization requirements and improved analysis techniques can improve schedulability by up to 250%. Furthermore, idleness analysis can be applied to existing locking protocols to improve schedulability in many cases.","PeriodicalId":239882,"journal":{"name":"2015 IEEE Real-Time Systems Symposium","volume":"116 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120873006","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: 12