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Influence of different abstractions on the performance analysis of distributed hard real-time systems

Simon Perathoner, Ernesto Wandeler, Lothar Thiele, Arne Hamann, Simon Schliecker, Rafik Henia, Razvan Racu, Rolf Ernst, Michael González Harbour
2008 Design automation for embedded systems  
System level performance analysis plays a fundamental role in the design process of hard real-time embedded systems.  ...  Introduction One of the major challenges in the design process of hard real-time embedded systems is to accurately predict performance characteristics of the final system implementation in early design  ...  While the previously mentioned formal performance analysis methods provide hard upper bounds for the worst-case performance and hard lower bounds for the best-case performance of a system, there are also  ... 
doi:10.1007/s10617-008-9015-1 fatcat:f5vev7eaonbxfmyzxpzvrceepq

Influence of different system abstractions on the performance analysis of distributed real-time systems

Simon Perathoner, Ernesto Wandeler, Lothar Thiele, Arne Hamann, Simon Schliecker, Rafik Henia, Razvan Racu, Rolf Ernst, Michael González Harbour
2007 Proceedings of the 7th ACM & IEEE international conference on Embedded software - EMSOFT '07  
System level performance analysis plays a fundamental role in the design process of real-time embedded systems.  ...  We define a set of benchmarks aimed at the evaluation of performance analysis techniques for distributed systems.  ...  While in general this might be tolerable for soft real-time systems, it is not for systems with hard real-time requirements.  ... 
doi:10.1145/1289927.1289959 dblp:conf/emsoft/PerathonerWTHSHREH07 fatcat:2xon3emq45eozcdtyin4sjchyi

Probabilistic Modelling and Evaluation of Soft Real-Time Embedded Systems [chapter]

Oana Florescu, Menno de Hoon, Jeroen Voeten, Henk Corporaal
2006 Lecture Notes in Computer Science  
Soft real-time systems are often analysed using hard realtime techniques, which are not suitable to take into account the deadline misses rate allowed in such systems.  ...  Therefore, the resulting system is over-dimensioned, thus expensive. To appropriately dimension soft real-time systems, adequate models, capturing their varying runtime behaviour, are needed.  ...  From such distribution histograms, the minimum (best case) and the maximum (worst case) values for the end-to-end delays can be deduced.  ... 
doi:10.1007/11796435_22 fatcat:pnnsqw7dh5esfdtybt273nkeou

Period optimization for hard real-time distributed automotive systems

Abhijit Davare, Qi Zhu, Marco Di Natale, Claudio Pinello, Sri Kanajan, Alberto Sangiovanni-Vincentelli
2007 Proceedings - Design Automation Conference  
This is accomplished by leveraging schedulability analysis within a convex optimization framework to simultaneously assign periods and satisfy end-to-end latency constraints.  ...  The need for accommodating legacy tasks and messages further complicates the scenario. In this work, we automatically assign task and message periods for distributed automotive systems.  ...  Distributed architectures supporting the execution of hard real-time applications are common not only for automotive, but also for avionics and industrial control systems.  ... 
doi:10.1145/1278480.1278553 dblp:conf/dac/DavareZNPKS07 fatcat:ly23sqx3efcbzbhmhocgskqnky

Period Optimization for Hard Real-time Distributed Automotive Systems

Abhijit Davare, Qi Zhu, Marco Di Natale, Claudio Pinello, Sri Kanajan, Alberto Sangiovanni-Vincentelli
2007 Proceedings - Design Automation Conference  
This is accomplished by leveraging schedulability analysis within a convex optimization framework to simultaneously assign periods and satisfy end-to-end latency constraints.  ...  The need for accommodating legacy tasks and messages further complicates the scenario. In this work, we automatically assign task and message periods for distributed automotive systems.  ...  Distributed architectures supporting the execution of hard real-time applications are common not only for automotive, but also for avionics and industrial control systems.  ... 
doi:10.1109/dac.2007.375172 fatcat:ykmnpz756ndd7kftwe35q3zcg4

An Approximate Timing Analysis Framework for Complex Real-Time Embedded Systems

Yue Lu, Thomas Nolte, Johan Kraft
2010 2010 13th IEEE International Conference on Computational Science and Engineering  
In such context, not only functional behavior but also non-functional properties of systems have to be assured, i.e., Worst-Case Response Time (WCRT) of tasks has to be known.  ...  In addition, the existing relatively well developed theories for modeling and analysis of real-time systems are having problems which limit their application in the context.  ...  For this model, the evaluation focuses on the end-to-end response time of the transaction which contains the tasks with the lowest priority.  ... 
doi:10.1109/cse.2010.21 dblp:conf/cse/LuNK10 fatcat:5w53up5b7zhk5f2xejjzhv43di

Analysis, Design, and Control of Predictable Interconnected Systems (Dagstuhl Seminar 19101)

Kunal Agrawal, Enrico Bini, Giovanni Stea, Michael Wagner
2019 Dagstuhl Reports  
Research communities have developed formal theories for predictability which are specialized to each application domain or type of resource (e.g., schedulability analysis for real-time systems or network  ...  Time predictability is a key requirement for above systems.  ...  We will end highlighting some open challenges towards adequate networking infrastructures for effective dynamic real-time systems.  ... 
doi:10.4230/dagrep.9.3.1 dblp:journals/dagstuhl-reports/AgrawalBS19 fatcat:jangqlafkfceppxy4xdecrru5y

Analysis of end-to-end QoS for networked virtual reality services in UMTS

L. Skorin-Kapov, D. Huljenic, D. Mikic, D. Vilendecic
2004 IEEE Communications Magazine  
We propose a classification of VR services based on delivery requirements (real-time or non-real-time) and degree of interactivity that maps to existing UMTS QoS classes and service attributes.  ...  Measurements of network parameters serve to determine the end-to-end QoS requirements of the considered applications, which are in turn mapped to proposed VR service classes.  ...  variation tion loss Conver- Hard real- Data, Distributed Tightly coupled flight Two-way End-to-end one-way 50 ms < 3% sational time graphics, simulations simulation delay < 100 ms packet loss  ... 
doi:10.1109/mcom.2004.1284929 fatcat:7oworb3wavd5zlnxpnynvw27n4

A metaheuristic to support the distribution of COVID-19 vaccines

Augusto José da Silva Rodrigues, Gabriel Lopes Lima
2021 Production  
Implications for theory and practice: To mitigate disease, adequate logistics for transporting and distributing vaccines is essential, especially in emergency situations to face pandemic crises.  ...  Originality: As far as we know, no metaheuristics has been developed for vaccine distribution, and specifically, to support the Brazilian government.  ...  for each case was executed 30 times with the best adaptation alpha for each case, the best solution being considered for analysis.  ... 
doi:10.1590/0103-6513.20210031 fatcat:6uzedzniavfivg4cmopyx2c7vy

Verifying Weakly-Hard Real-Time Properties of Traffic Streams in Switched Networks

Leonie Ahrendts, Sophie Quinton, Thomas Boroske, Rolf Ernst, Marc Herbstritt
2018 Euromicro Conference on Real-Time Systems  
performance analysis Keywords and phrases embedded and cyber-physical systems, weakly-hard real-time systems and networks, timing analysis  ...  In this paper, we introduce the first verification method which is able to provide weakly-hard real-time guarantees for tasks and task chains in systems with multiple resources under partitioned scheduling  ...  Compositional Performance Analysis (CPA) . CPA [11] is a compositional framework to verify classical hard real-time properties, e.g., worst case response times.  ... 
doi:10.4230/lipics.ecrts.2018.15 dblp:conf/ecrts/AhrendtsQBE18 fatcat:zwxbja44rjel7dfcopiksmbdri

A comparative study of rate monotonic schedulability tests

Nasro Min-Allah, Samee Ullah Khan, Nasir Ghani, Juan Li, Lizhe Wang, Pascal Bouvry
2011 Journal of Supercomputing  
Under fixed priority nonpreemptive real-time systems, current schedulability tests (in exact form) can be divided into: response time based tests, and scheduling points tests.  ...  a matter of primary interest to real-time system designers.  ...  Keywords Real-time systems · Feasibility analysis · Rate monotonic scheduling Introduction The main issue involved in the design of real-time systems is of timing correctness and the solution lies in  ... 
doi:10.1007/s11227-011-0554-z fatcat:w7gmw2u6fnhf7ligutybkpkxy4

Schedulability-driven frame packing for multi-cluster distributed embedded systems

Paul Pop, Petru Eles, Zebo Peng
2003 Proceedings of the 2003 ACM SIGPLAN conference on Language, compiler, and tool for embedded systems - LCTES '03  
We present an approach to frame packing for multi-cluster distributed embedded systems consisting of time-triggered and event-triggered clusters, interconnected via gateways.  ...  Thus, we have also proposed a schedulability analysis for applications consisting of mixed eventtriggered and time-triggered processes and messages, and a worst case queuing delay analysis for the gateways  ...  ACKNOWLEDGEMETNS The authors are grateful to the industrial partners at Volvo Technology Corporation in Gothenburg, for their close involvement and precious feedback during this work.  ... 
doi:10.1145/780746.780748 fatcat:75tbfjd6ujgzrbo7ltacwbvpli

Schedulability-driven frame packing for multi-cluster distributed embedded systems

Paul Pop, Petru Eles, Zebo Peng
2003 Proceedings of the 2003 ACM SIGPLAN conference on Language, compiler, and tool for embedded systems - LCTES '03  
We present an approach to frame packing for multi-cluster distributed embedded systems consisting of time-triggered and event-triggered clusters, interconnected via gateways.  ...  Thus, we have also proposed a schedulability analysis for applications consisting of mixed eventtriggered and time-triggered processes and messages, and a worst case queuing delay analysis for the gateways  ...  ACKNOWLEDGEMETNS The authors are grateful to the industrial partners at Volvo Technology Corporation in Gothenburg, for their close involvement and precious feedback during this work.  ... 
doi:10.1145/780732.780748 dblp:conf/lctrts/PopEP03 fatcat:6ej6l3ikezfxflztrgj7klgelq

Schedulability-driven frame packing for multicluster distributed embedded systems

Paul Pop, Petru Eles, Zebo Peng
2005 ACM Transactions on Embedded Computing Systems  
We present an approach to frame packing for multi-cluster distributed embedded systems consisting of time-triggered and event-triggered clusters, interconnected via gateways.  ...  Thus, we have also proposed a schedulability analysis for applications consisting of mixed eventtriggered and time-triggered processes and messages, and a worst case queuing delay analysis for the gateways  ...  ACKNOWLEDGEMETNS The authors are grateful to the industrial partners at Volvo Technology Corporation in Gothenburg, for their close involvement and precious feedback during this work.  ... 
doi:10.1145/1053271.1053276 fatcat:ryuhwoltwfbmba7ujqpbu4icma

A Survey and Comparative Study of Hard and Soft Real-Time Dynamic Resource Allocation Strategies for Multi-/Many-Core Systems

Amit Kumar Singh, Piotr Dziurzanski, Hashan Roshantha Mendis, Leandro Soares Indrusiak
2017 ACM Computing Surveys  
Such systems need to cater for increasingly dynamic workloads, requiring e cient dynamic resource allocation strategies in order to satisfy hard or soft real-time constraints.  ...  This article provides an extensive survey of hard and soft real-time dynamic resource allocation strategies proposed over the last two decades and highlights the emerging trends for multi/many-core systems  ...  For hard real-time systems, the schedulability tests ensuring timing guarantees, e.g., worst-case response time test [6, 127] and exact schedulability test [13, 49, 57] can be employed.  ... 
doi:10.1145/3057267 fatcat:ykfrc5lytnehxncsp3wdmvi5uy
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