TY  - JOUR
A1  - Felgentreff, Tim
A1  - Perscheid, Michael
A1  - Hirschfeld, Robert
T1  - Implementing record and refinement for debugging timing-dependent communication
JF  - Science of computer programming
N2  - Distributed applications are hard to debug because timing-dependent network communication is a source of non-deterministic behavior. Current approaches to debug non deterministic failures include post-mortem debugging as well as record and replay. However, the first impairs system performance to gather data, whereas the latter requires developers to understand the timing-dependent communication at a lower level of abstraction than they develop at. Furthermore, both approaches require intrusive core library modifications to gather data from live systems. In this paper, we present the Peek-At-Talk debugger for investigating non-deterministic failures with low overhead in a systematic, top-down method, with a particular focus on tool-building issues in the following areas: First, we show how our debugging framework Path Tools guides developers from failures to their root causes and gathers run-time data with low overhead. Second, we present Peek-At-Talk, an extension to our Path Tools framework to record non-deterministic communication and refine behavioral data that connects source code with network events. Finally, we scope changes to the core library to record network communication without impacting other network applications.
KW  - Distributed debugging
KW  - Record and replay
KW  - Dynamic analysis
KW  - Record and refinement
Y1  - 2016
U6  - https://doi.org/10.1016/j.scico.2015.11.006
SN  - 0167-6423
SN  - 1872-7964
VL  - 134
SP  - 4
EP  - 18
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - BOOK
A1  - Weyand, Christopher
A1  - Chromik, Jonas
A1  - Wolf, Lennard
A1  - Kötte, Steffen
A1  - Haase, Konstantin
A1  - Felgentreff, Tim
A1  - Lincke, Jens
A1  - Hirschfeld, Robert
T1  - Improving hosted continuous integration services
T1  - Verbesserung gehosteter Dienste für kontinuierliche Integration
N2  - Developing large software projects is a complicated task and can be demanding for developers. Continuous integration is common practice for reducing complexity. By integrating and testing changes often, changesets are kept small and therefore easily comprehensible. Travis CI is a service that offers continuous integration and continuous deployment in the cloud. Software projects are build, tested, and deployed using the Travis CI infrastructure without interrupting the development process. This report describes how Travis CI works, presents how time-driven, periodic building is implemented as well as how CI data visualization can be done, and proposes a way of dealing with dependency problems.
N2  - Große Softwareprojekte zu entwickeln, ist eine komplizierte Aufgabe und fordernd für Entwickler. Kontinuierliche Integration ist eine geläufige Praxis zur Komplexitätsreduktion. Durch häufiges Integrieren und Testen werden Änderungen klein gehalten und sind daher übersichtlich. Travis CI ist ein Dienst, der kontinuierliche Integration und kontinuierliche Bereitstellung in der Cloud anbietet. Softwareprojekte werden auf der Travis CI Infrastruktur gebaut, getestet und bereitgestellt, ohne dass der Entwicklungsprozess unterbrochen wird. Dieser Bericht beschreibt, die Travis CI funktioniert, zeigt wie zeitgesteuertes, periodisches Bauen implentiert wurde, wie CI-Daten visualisiert werden können und schlägt ein Verfahren vor mit dem Abhängigkeitsprobleme gelöst werden können.
T3  - Technische Berichte des Hasso-Plattner-Instituts für Digital Engineering an der Universität Potsdam - 108 
KW  - Travis CI
KW  - continuous integration
KW  - continuous testing
KW  - software tests
KW  - software architecture
KW  - periodic tasks
KW  - dependencies
KW  - visualization
KW  - Travis CI
KW  - kontinuierliche Integration
KW  - kontinuierliches Testen
KW  - Softwaretests
KW  - Softwarearchitektur
KW  - periodische Aufgaben
KW  - Abhängigkeiten
KW  - Visualisierung
Y1  - 2017
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-94251
SN  - 978-3-86956-377-0
SN  - 1613-5652
SN  - 2191-1665
IS  - 108
PB  - Universitätsverlag Potsdam
CY  - Potsdam
ER  -