References of "Sunyé, Gerson"
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See detailKevoreeJS: Enabling dynamic software reconfigurations in the Browser
Tricoire, Maxime; Barais, Olivier; Leduc, Manuel et al

in WICSA/CompArch 2016 Proceedings (2016, March)

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See detailStress Testing of Transactional Database Systems
Meira, Jorge Augusto UL; Almeida, Eduardo Cunha de; Sunyé, Gerson et al

in Journal of Information and Data Management (2013)

Transactional database management systems (DBMS) have been successful at supporting traditional transaction processing workloads. However, web-based applications that tend to generate huge numbers of ... [more ▼]

Transactional database management systems (DBMS) have been successful at supporting traditional transaction processing workloads. However, web-based applications that tend to generate huge numbers of concurrent business operations are pushing DBMS performance over their limits, thus threatening overall system availability. Then, a crucial question is how to test DBMS performance under heavy workload conditions. Answering this question requires a testing methodology to set up non-biased conditions for pushing a particular DBMS over its normal performance limits (i.e., to stress it). In this article, we present a stress testing methodology for DBMS to search for defects in supporting very heavy workloads. Our methodology leverages distributed testing techniques and takes into account the various biases that may affect the test results. It progressively increases the workload along with several tuning steps up to a stress condition. We validate our methodology with empirical studies on two popular DBMS (one proprietary, one open-source) and detail the defects that have been found. [less ▲]

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See detailPeer-to-Peer Load Testing
Meira, Jorge Augusto UL; Almeida, Eduardo Cunha; Le Traon, Yves UL et al

in Software Testing, Verification and Validation (ICST), 2012 IEEE Fifth International Conference on (2012)

Nowadays the large-scale systems are common-place in any kind of applications. The popularity of the web created a new environment in which the applications need to be highly scalable due to the data ... [more ▼]

Nowadays the large-scale systems are common-place in any kind of applications. The popularity of the web created a new environment in which the applications need to be highly scalable due to the data tsunami generated by a huge load of requests (i.e., connections and business operations). In this context, the main question is to validate how far the web applications can deal with the load generated by the clients. Load testing is a technique to analyze the behavior of the system under test upon normal and heavy load conditions. In this work we present a peer-to-peer load testing approach to isolate bottleneck problems related to centralized testing drivers and to scale up the load. Our approach was tested in a DBMS as study case and presents satisfactory results. [less ▲]

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