Quality assurance (QA) tasks, such as testing, profiling, and performance evaluation, have historically been done in-house on developergenerated workloads and regression suites. Since this approach is inadequate for many systems, tools and processes are being developed to improve software quality by increasing user participation in the QA process. A limitation of these approaches is that they f...

One of the key invariants in computer and communication systems is that im¬ portant characteristics follow long-or heavy-tailed distributions. This means that the tail of these distributions declines according to a power law. Hence, the probability for extremely large values is non-negligible. For example, such distributions have been found to describe the size of web objects or the pro¬ cessin...

difficulty of accurately re-creating a mobile networking Abstract environment in vitro argues for live experiments. On the In this paper we put forth the view that trace other hand, the difficulty of experimental control in live modulation is an indispensable technique for experiments confounds interpretation of results. building and evaluating mobile computing systems. The essence of our solut...

Formal description techniques allow to formally reason about the functional aspects of systems under development. This allows to detect and remedy functional errors in early stages of the development cycle. In order to also support performance engineering activities in the early development stages, a study of the integration of performance aspects into the standardized formal description techni...

Reference architectures for specific domains can provide significant benefits in productivity and quality for real-time systems development. These systems require an exact characterisation based on quantitative evaluation of architectural features referred to timing properties, such as performance, reliability, etc. In this work, an UML-based tool has been used to obtain a measure of performanc...

introduction: today, medical software are used in different aspects of healthcare varying from simple data processing to collection and interpretation of physiological information and education of nurses and physicians. to ensure use of medical software, they must be constantly evaluated based on specific criteria. since there is no organized evaluation system and comprehensive criteria for eva...

This paper describes a threefold method of testing the performance of an array-based ultrasonic tool for nondestructive testing of spot welds. The tool is described in its capabilities, use, and advantages over existing counterparts. Performance testing is not only described, but results from carrying out the testing are documented as well. The three performance testing methods include the use ...

Mobile (cellular) networks enable innovation, but can also stifle it and lead to user frustration when network performance falls below expectations. As mobile networks become the predominant method of Internet access, research, development, and regulatory communities have taken an increased interest in measuring mobile network performance and its impact on user experience. In this survey we exa...

Complementary to performance evaluation, performance testing of communicating protocols is a qualitative and quantitative test of a system, aiming at checking whether performance requirements of protocols have been satisfied under certain conditions. It raises an interesting issue of accurately formalizing specified performance requirements by taking consideration of data values of the protocol...

Usability is the methodology used to determine the software performance. Usability is basically used to determine the strength and weakness of an application from the end user point of view. Questionnaires have been used to evaluate user interface of different application. This paper is a survey and analysis of the performance of Microsoft office 2003-2007 packages. We have considered this prod...