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In this paper, we propose an SLA-based approach to private cloud reliability. We examine how to formulate reliability SLAs, identify key customer scenarios and use accelerated testing to validate them. We propose the creation of a public cloud SaaS to enable the above reliability validation via a distributed, scalable model. We then illustrate an application of the above approach during the development...
Field failures, that is, failures caused by faults that escape the testing phase leading to failures in the field, are unavoidable. Improving verification and validation activities before deployment can identify and timely remove many but not all faults, and users may still experience a number of annoying problems while using their software systems.This paper investigates the nature of field failures,...
Regression testing is a core activity that allows developers to ensure that source code changes do not introduce bugs. An important prerequisite then is that test cases are deterministic. However, this is not always the case as some tests suffer from socalled flakiness. Flaky tests have serious consequences, as they can hide real bugs and increase software inspection costs. Existing research has focused...
High-performance communication interfaces in modern complex electronic systems bring new challenges for board-level manufacturing test. Various means of calibration and error-correction that are incorporated into high-speed protocols tend to hide manufacturing flaws thus making comprehensive testing be an extremely hard task. Links transmitting at gigabit rates are especially susceptible to so-called...
On the example of operations for manufacturing the “Axis” detail, the effectiveness of statistical control of the technological production process for the “Nalchik plant of highvoltage equipment” is demonstrated. Specific recommendations on the effective quality assurance of parts are given.
Under-frequency load shedding, rising electricity tariffs, environmental concerns and delays in constructing new power stations had plunged South Africa into darkness with the need for load shedding. Renewable energy technologies with its short lead times have become an attractive alternative for the country and hence led to the South African Government calling upon the country to explore renewable...
Big Data programs are those that process large data exceeding the capabilities of traditional technologies. Among newly proposed processing models, MapReduce stands out as it allows the analysis of schema-less data in large distributed environments with frequent infrastructure failures. Functional faults in MapReduce are hard to detect in a testing/preproduction environment due to its distributed...
Accurate capacity measurement of Internet services is critical to ensure high-performing production computing environments. In this work, we present our solution of performing accurate capacity measurement. Referred to as "Redliner", it uses live traffic in production environments to drive the measurement, hence avoiding many pitfalls that prevent capacity measurement from obtaining accurate...
Sound effect is the important part of fantastical scene in ANIME, especially for girls ANIME. However the sound design method is still closed and not enough researched. Moreover, the recent digital sound design tools become to make 'American taste' sounds, not to fit for ANIME sound. In this paper, we propose the sound design testing tools in procedural way. The tool is built with associated by a...
As a new research issue, the operating optimality assessment for industrial processes has received growing interests in recent years. In this study, a novel online operating optimality assessment method based on Gaussian mixture model (GMM) is proposed for industrial processes. The offline training data can be automatically divided into several data sets by the proposed performance grade division...
As the inspection requirement of engineering machinery cab is analyzed, the intelligent detection system for cab based on compactRIO(CRIO) is designed, which is combined with NI LabVIEW and embedded modules of CRIO. In engineering Machinery cab, the designed system can realize intelligent supervisory and networking management of testing data for electrical system. And then, a set of complete and systematic...
Software Testing is an essential aspect to ensure software quality, reliability and consistent user experience. Digital applications such as mobile app usually follow rapid software delivery which consists of various releases. It typically uses insights from the development data such as defects, test logs for test execution optimization. Once the application is released and deployed, there is rich...
We present an original concept for patch generation: we propose to do it directly in production. Our idea is to generate patches on-the-fly based on automated analysis of the failure context. By doing this in production, the repair process has complete access to the system state at the point of failure. We propose to perform live regression testing of the generated patches directly on the production...
Test case maintainability is an important concern, especially in open source and distributed development environments where projects typically have high contributor turn-over with varying backgrounds and experience, and where code ownership changes often. Similar to design patterns, patterns for unit testing promote maintainability quality attributes such as ease of diagnoses, modifiability, and comprehension...
Assessing how large-scale software systems behave under load is essential because many problems cannot be uncovered without executing tests of large volumes of concurrent requests. Load-related problems can directly affect the customer-perceived quality of systems and often cost companies millions of dollars. Load testing is the standard approach for assessing how a system behaves under load. However,...
Any kind of smart testing technique must be very efficient to be competitive with random fuzz testing. State-of the-art test generators are largely inferior to random testing in real world applications. This work proposes to gather and evaluate lightweight analyses that can enable the creation of an efficient and sufficiently effective analysis-assisted fuzz tester. The analyses shall leverage information...
There is no metric that determines how well the implementation of a ticket has been tested. As a consequence, code changed within the context of a ticket might unintentionally remain untested and get into production. This is a major problem, because changed code is more fault-prone than unchanged code. In this paper, we introduce the metric ticket coverage which puts test coverage into the context...
Background: Test quality is a prerequisite for achieving production system quality. While the concept of quality is multidimensional, most of the effort in testing context hasbeen channelled towards measuring test effectiveness. Objective: While effectiveness of tests is certainly important, we aim to identify a core list of testing principles that also address other quality facets of testing, and...
From September 9, 2016 through October 15, 2016, over 2000 citizens of Indiana carried an unusual torch through all 92 counties. A map updated in real time indicated the current location of the torch and social media sites featured photos and videos taken a short time before using the torch. This torch was the result of many student projects and a challenging integration and production process. This...
A good understanding of the practices followed by software development projects can positively impact their success — particularly for attracting talent and on-boarding new members. In this paper, we perform a cluster analysis to classify software projects that follow continuous integration in terms of their activity, popularity, size, testing, and stability. Based on this analysis, we identify and...
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