A large scale industrial case study on architecture based software reliability analysis

Architecturebased reliability estimation techniques must be applicable to largescale, complex. Unfortunately, many projects are unsuccessful in their attempts to leverage architecturebased development, especially largescale projects. A largescale industrial case study on architecturebased software reliability analysis conference paper december 2010 with 91 reads how we measure reads. In this paper we present an empirical study of architecture based software reliability based on a large open source applica tion which consists of 350,000 lines of c code.

Early prediction of the reliability and performance of the software can be used as a basis for. Service products and service product lines the its strategy builds on an asset based business model. Dec 01, 2011 it integrates design for change, precise behavioral documentation and structure based reliability prediction to achieve improved reliability prediction of software systems. A practical model based engineering capability for. The structure of an architecture is said to be eroded when the software within the architecture becomes resistant to change.

Our approach was motivated by and applied in an industrial case study on a large scale software ecosystem for smart cities, that constitute a complex and challenging systemofsystems domain. The software challenge of the future is the product of a 12month study of ultralargescale uls systems software. Abstractarchitecturebased software reliability analysis methods shall help software architects to identify critical software components and to quantify their. The case is a largescale distributed agile software project with a large amount of complex legacy code at ericsson ab 1, a swedish company that develops telecommunicationrelated products. Architecturebased software reliability analysis methods shall help software architects to identify critical software components and to quantify their infl. We use three programs based on two architectural styles. Reliability analysis of a software application based on its architecture offers many. Abb group january 30, 2015 slide 1 a largescale industrial case study on architecturebased software reliability analysis heiko koziolek. A practical model based engineering capability for integrating architecture design, analysis, and verification of large scale complex systems.

Software architecture is critical to the success of software development projects. Jan 14, 2019 a case study focusing on ebay strategy. Reliability, an important dependability attribute, is defined as. Use of componentbased software architectures in industrial. The approach is illustrated using an industrial case for analyzing reliability of the software architecture of a digital tv. Unfortunately, many projects are unsuccessful in their attempts to leverage architecture based development, especially large scale projects. Large empirical case study of architecturebased software. An sqp algorithm for largescale constrained optimization. For a smart manufacturing system, the program will build the following. Reliability is closely related to availability, which is typically described as the ability of a component or system to function at. Reliability methods applicable to risk based design, component reliability and degradation, static and dynamic system reliability modeling and analysis, life testing, stressstrength analysis, and fault tree analysis. Several analysis or prediction methods have been reliability and availability analysis, software architecture,software components 1. The design approach is named design for reliability predictability drp.

Organizations that must design, develop, deploy, and sustain systems for several decades and manage system and software. Lessons from high reliability organizations case analysis, risk mitigation in largescale systems. The smart manufacturing systems design and analysis program will address these issues and explore potential opportunities for dramatically rethinking the manufacturing system life cycle with a focus on assemblycentric production. The specification and documentation approach builds upon precise behavioral specification of interfaces using the trace function method tfm. Reusable architectural decision models for qualitydriven. Software architecture reliability analysis using failure. Despite their usefulness, these system models are by and large descriptive models and not analytical executable models. Jul 02, 2014 10 tips for designing big data solutions 25 understand data users and sources discover architecture drivers select proper reference architecture do tradeoff analysis, address cons map reference architecture to technology stack prototype, reevaluate architecture estimate implementation efforts set up devops practices from the very beginning. Although researchers have proposed more than 20 methods in this area, empirical case studies applying these methods on largescale industrial systems are rare. Case studies can be defined as persuasive narratives featuring specific, realworld uses for a product or service to help demonstrate their value.

Zage, evaluating design metrics on large scale software, ieee software, vol. The objective of this study is to identify the crucial factors that might have an influence on these quality attributes from the software architecture perspective. A largescale industrial case study on architecturebased. Safety is the probability that a system does not catastrophically fail in 0,t, while reliability is the probability that the system does not fail in 0. Section 6 gives a brief overview of the relatedwork on software reliability measurements. A prototype based evaluation method is proposed that enables evaluation of multiple quality attributes using components of a system and an approximation of its intended runtime environment. Software architecture design is a crucial stage in the software development process, especially in developing largescale software. Section vi describes the conclusion and future work.

The case studies demonstrate effective support of usage profile analysis and architectural configuration ranking, together. In contrast, domain level engineers structural engineers, software engineers. Architecture and dependability of largescale internet. In summary, the architecturebased reliability model computes software reliability based on a transition matrix derived from a global state model. In sarah we are mainly interested in identifying architectural tactics to enhance reliability. In contrast, domain level engineers structural engineers, software engineers, aerodynamicists, manufacturing engineers, cost analysts, etc.

Fmea and fta to utilize them for the reliability analysis of software at the architecture design level. We present a case study that evaluates two quality attributes. Department of industrial and systems engineering nov 04, 2010 a large scale industrial case study on architecture based software reliability analysis. Many large organizations are adopting agile software development as part of their continuous push towards higher flexibility and shorter lead times, yet few reports on largescale agile transformations are available in the literature. To this end, most of the method used for software reliability analysis focused on product of large server in. Finally, section 6 discusses assumptions and limitations before section 7 concludes.

A prototypebased evaluation method is proposed that enables evaluation of multiple quality attributes using components of a system and an approximation of its intended runtime environment. We have created it as an update for students and professional using dave chaffeys books which feature this case study. Software need to be reliable in order to be trustworthy and dependable, reliability analysis is one of the most important factors in software development since analyzing reliability of software during design and prior to release significantly save cost of failure testing activities. Lost in a myriad of possible uml diagrams, project teams often resort to ineffective adhoc techniques. Jackettype offshore platforms play an important role in oil and gas industries in shallow and intermediate water. Reliability engineering is a subdiscipline of systems engineering that emphasizes dependability in the lifecycle management of a product. The goals of our study are to analyze empirically the adequacy, applicability, and accuracy of architecture based software reliability models. Apr 18, 2019 browse through over 150 of the best b2b case studies from todays leading companies, including splunk, tableau, and workday. Modeling and estimating software reliability during testing is useful in quantifying the quality and dependability of the developed software systems. Architecture challenges for internal software ecosystems. Reliability estimation of componentbased software through. Mar 22, 2005 modeling and estimating software reliability during testing is useful in quantifying the quality and dependability of the developed software systems. The method is applied in an industrial case study where communication components in a distribu.

The details of our style based and then architecture based models are described in section 3 and 4, respectively. Industrial case studies combinatorial and pairwise testing. Section v presents an application of the proposed model to a case study. A large number of reliability models have also been proposed to. Adequacy, accuracy, scalability, and uncertainty of architecture. Combinatorial testing is being applied successfully in nearly every industry, and is especially valuable for assurance of highrisk software with safety or. Abstractarchitecturebased software reliability analysis methods shall help software architects to identify critical software components and to quantify their in. A largescale industrial case study on architecturebased software. This book documents the resulting novel approach of designing, specifying, and describing the behavior of software systems in a way that helps to predict their reliability from the reliability of the components and their interactions. We present the software architecture reliability analysis approach sarah that incorporates the extended fmea and fta. The primary challenge in architecturebased reliability estimation is the lack of precise information about the system, since the system implementation does not yet exist. Related work our approach is based on software performance prediction 34, 2, architecturebased software reliability analysis 18, and searchbased software engineering 22. Conclusions and future work are given in section 7.

An overview of methods of reliability and availability. Combinatorial testing is an extension of the established field of statistical design of experiments doe, used by commercial firms with demonstrated success. Large empirical case study of architecturebased software reliability, proc. Numerical design of taskoptimal preflex behaviors for delayed disturbance responses. Software engineering advice from building largescale.

In this case study, we address the following research questions. For the purposes of this article, largescale means greater than 100,000 events per second, or having a total aggregate event payload size of over 100 mb per second. Reliability describes the ability of a system or component to function under stated conditions for a specified period of time. Effort estimation in largescale software development. We chose to use an open source software application as a case study since for a wide variety of open source projects many software artifacts necessary for architecturebased software reliability assessment are available.

Comparison of architecturebasedsoftware reliability models. The study was carried out over a period of one year and involved main architects of all organizational units. Reliability analysis of software architecture evolution. Architecting for large scale agile software development. The case is a large scale distributed agile software project with a large amount of complex legacy code at ericsson ab 1, a swedish company that develops telecommunicationrelated products.

Architecture and dependability of largescale internet services an analysis of the architectures and causes of failure at three largescale internet services can help developers plan reliable systems offering maximum availability. It strategy projects, as well as in the architecture, design, and implementation phases of application development and integration projects. Jan 11, 2018 many large organizations are adopting agile software development as part of their continuous push towards higher flexibility and shorter lead times, yet few reports on large scale agile transformations are available in the literature. Personalized reliability prediction of web services acm. The software challenge of the future june 01, 2006 book peter h. Parameterized reliability prediction for componentbased software.

Architecturebased reliability estimation is challenging during early design phases, architec ts lack information necessary for precisely determining a systems reliability, such as the systems operational profile and failure and recovery information. Our earlier research work on applying architecturebased software reliability models on a large scale case study allowed us to test how and when they work, to understand their limitations, and to outline the issues that need future research. A largescale industrial case study on architecturebased software reliability analysis ieee projects ieee papers engpaper. Acvip is a compositional, architecturecentric, modelbased approach enabling virtual integration analysis in the early. Introduction software systems are increasingly entering consumers everyday life. In the following sections the main steps of the method will be explained in detail using the industrial case study. Extending failure modes and effects analysis approach for. Although researchers have proposed more than 20 methods in this area, empirical case studies applying these methods on largescale industrial. Software architecture constraints as customizable, reusable and composable entities a generic software architecture for a domain specific distributed embedded system a largescale industrial case study on architecturebased software reliability analysis ieee paper. Software architecture constraints as customizable, reusable and composable entities a generic software architecture for a domain specific distributed embedded system a large scale industrial case study on architecture based software reliability analysis ieee paper. We structured our case study based on the guidelines by runeson and host 28, developed a case study protocol and followed the method outlined in figure 2. Pdf architecturebased reliability prediction with the palladio. Quality characteristics of an architecture, such as its ability to accommodate change, are critical for an evolving product.

D product development program developing a xaas platform and a related set of services. In proceedings of the 21st ieee international symposium on software reliability engineering issre10. Architecturebased software reliability analysis methods shall help software architects to identify critical software components and to quantify their influence on the system reliability. The details of our stylebased and then architecturebased models are described in section 3 and 4, respectively. Structural analysis of the software architecture a. Reliability, an important dependability attribute, is defined as the probability. Automatically improve software architecture models for. An analysis of these experiences shows that the component based architecture.

This case study summarizes the strategic approach used by ebay to take advantage of increased consumer adoption of the internet. Pdf reliability analysis of software architecture evolution. To enable architecturebased software reliability analyses, reliability specifi cations of. Lessons from high reliability organizations case study solution, risk mitigation in largescale systems. Evaluation using industrial strength applications is also necessary. Smart manufacturing systems design and analysis program. T1 software architecture reliability analysis using failure scenarios. This global state model is the integration of a number of state models, which are transformed from the architectural styles identified in a software system. Software architecture quality the method is applied. Abstractarchitecturebased software reliability analysis methods shall help software architects to identify critical software components and to quantify their influence on the system reliability.

Section 5 presents a case study conducted on an industrial system to validate the model. The unifying structural properties of the models are exhibited in section 2. Lessons from high reliability organizations xls file, risk mitigation in largescale systems. The model is based on an industrial system 23, which generates. Software architecture quality the method is applied in an. However, such measurements applied so late in the development process leave done little to improve the quality of the software system in a costeffective way. Service products and service product lines the its strategy builds on an assetbased business model. Quantitative reliability analysis in engineering design. Activity diagram of the software architecture reliability analysis method. A largescale industrial case study on architecturebased software reliability analysis. N2 with the increasing size and complexity of software in embedded systems, software has now become a primary threat for the reliability. Reliability estimation during architectural design. Adequacy, accuracy, scalability, and uncertainty of. Feiler kevin sullivan university of virginia kurt c.