On-the-fly program modification: systems for dynamic updating

Segal, Mark E.; Frieder, Ophir

doi:10.1109/52.199735

Cited by 123 publications

(66 citation statements)

References 7 publications

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“…Updates also typically degrade the system's performance, thus potentially causing deadlines to be missed [Segal and Frieder 1993]. Our system copes with these two issues explicitly.…”

Section: Related Workmentioning

confidence: 99%

Dynamic software updates for real-time systems

Wahler

Richter

Manuel

2009

Proceedings of the 2nd International Workshop on Hot Topics in Software Upgrades

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Seamlessly updating software in running systems has recently gained momentum. Dynamically updating the software of real-time embedded systems, however, still poses numerous challenges: such systems must meet hard deadlines, cope with limited resources, and adhere to high safety standards.This paper presents a solution for updating componentbased cyclic embedded systems without violating real-time constraints. In particular, it investigates how to identify points in time at which updates can be performed and how to transfer the state of a component to a new version of the same component. We also present experimental results to validate the proposed solution.

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“…Updates also typically degrade the system's performance, thus potentially causing deadlines to be missed [Segal and Frieder 1993]. Our system copes with these two issues explicitly.…”

Section: Related Workmentioning

confidence: 99%

Dynamic software updates for real-time systems

Wahler

Richter

Manuel

2009

Proceedings of the 2nd International Workshop on Hot Topics in Software Upgrades

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“…There is abundant work in the area of dynamic software updating systems [16]. These projects support executable code replacement at runtime.…”

Section: Related Workmentioning

confidence: 99%

Dynamically Programmable and Reconfigurable Middleware Services

Román¹,

Islam²

2004

Middleware 2004

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Abstract. The increasing software complexity and proliferation of distributed applications for cell phones demand the introduction of middleware services to assist in the development of advanced applications. However, from the user perspective, it is essential that these new phones provide a smooth error-free experience. Despite of the complexity underlying a cell phone, placing a phone call remains a simple task that can be performed by most users regardless of their technical background. Furthermore, cell phones rarely crash (especially compared to PCs) and carriers are able to correct certain problems remotely without user intervention. We advocate for a middleware infrastructure that allows carriers and developers to correct middleware behavior, configure it, and upgrade it, without requiring user intervention and without stopping the execution of applications. We introduce a new technique we refer to as externalization. This technique explicitly externalizes the state, the logic, and the internal component structure of middleware services. As a result, carriers and developers have full control over these middleware services. They can access, inspect, and modify the state, logic, and structure of middleware services at runtime while preserving the execution of existing applications and providing an error-free experience to users. We claim that externalization is the key for the future evolution of cell phones' middleware infrastructure.

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“…In their seminal paper, Segal and Frieder [10] identify a set of general requirements for any dynamic updating system: preserving program correctness (during and after the update), minimizing human intervention, supporting program restructuring and low-level program changes (e.g., both implementations and interfaces), supporting distributed programs (communicating across mutually distrustful administrative domains), not requiring special-purpose hardware and not constraining the language and environment. Their survey illustrates that in general, research has focused on mechanisms for implementing change at different levels of granularity (e.g.…”

Section: Introductionmentioning

confidence: 99%

Ecotopia: An Ecological Framework for Change Management in Distributed Systems

Dumitraş

Rosu

Dan

et al. 2007

Architecting Dependable Systems IV

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Abstract. Dynamic change management in an autonomic, service-oriented infrastructure is likely to disrupt the critical services delivered by the infrastructure. Furthermore, change management must accommodate complex real-world systems, where dependability and performance objectives are managed across multiple distributed service components and have specific criticality/value models. In this paper, we present Ecotopia, a framework for change management in complex service-oriented architectures (SOA) that is ecological in its intent: it schedules change operations with the goal of minimizing the service-delivery disruptions by accounting for their impact on the SOA environment. The change-planning functionality of Ecotopia is split between multiple objective-advisors and a system-level change-orchestrator component. The objective advisors assess the change-impact on service delivery by estimating the expected values of the Key Performance Indicators (KPIs), during and after change. The orchestrator uses the KPI estimations to assess the per-objective and overall business-value changes over a long timehorizon and to identify the scheduling plan that maximizes the overall business value. Ecotopia handles both external change requests, like software upgrades, and internal changes requests, like fault-recovery actions. We evaluate the Ecotopia framework using two realistic change-management scenarios in distributed enterprise systems.

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On-the-fly program modification: systems for dynamic updating

Cited by 123 publications

References 7 publications

Dynamic software updates for real-time systems

Dynamic software updates for real-time systems

Dynamically Programmable and Reconfigurable Middleware Services

Ecotopia: An Ecological Framework for Change Management in Distributed Systems

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