Home Page of Roberto Natella


I am a post-doc researcher in the field of software dependability. I currently work with the DIETI department of the Federico II University of Naples, Italy, and with the CINI laboratory (Consorzio Interuniversitario Nazionale per l'Informatica) of the same university. I also collaborate with the CISUC research centre of the University of Coimbra, Portugal. In 2011, I received a PhD degree in computer engineering, with a thesis entitled "Achieving Representative Faultloads in Software Fault Injection".



Research Interests


Fault Injection and Robustness Testing

The occurrence of severe software-related accidents highlights the need for assuring that complex systems are able to operate even in the presence of faulty software. Software Fault Injection is the deliberate injection of software faults or errors into a component, in order to assess fault-tolerance and robustness properties. Two fundamental issues arise:

Representativeness
What should be injected to perform meaningful and relevant fault injection experiments (e.g., find robustness issues that do actually matter)?
Efficiency
Can we keep small the number and duration of experiments and, at the same time, obtain useful results (e.g., quickly find robustness issues)?
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Software Aging and Rejuvenation

When software systems are executed continuously for long time periods, they tend to exhibit degraded performance and are more prone to fail. This phenomenon, namely software aging, is caused by elusive software bugs ("Mandelbugs") that gradually corrupt the software state, such as memory leak bugs. On one hand, software aging can be mitigated by preemptively rejuvenating the software, i.e., bringing it into an aging-free state, for instance by restarting it. On the other hand, software aging can be avoided by detecting and fixing bugs, such as through performance and resource consumption tests.

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Contact information


Email
roberto dot natella at unina dot it
Address
Laboratorio CINI-ITEM, Complesso Universitario Monte Sant'Angelo, Ed. 1, Via Cinthia, 80126, Naples, Italy
Skype
rnatella
Phone
(+39) 081 67 67 70