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Dynamic memory allocation is one of the most ubiquitous operations in computer programs. In order to design effective memory allocation algorithms, it is a major requirement to understand the most frequent memory allocation patterns present in modern applications. In this paper, we present an experimental characterization study of dynamic memory allocations in seven real-world widely used applications...
Memory allocations are one of the most frequently used operations in computer programs. The performance of memory allocation operations is a critical factor in software design; however, it is very often neglected. In this paper, we present a comprehensive complexity analysis of widely adopted user-level memory allocator algorithms. We consider time and space complexity, as well as the allocator overhead...
The operating system (OS) Jitter phenomenon has been considered an import and critical factor in high-performance distributed computing. In this paper, we present the results of an experimental study that quantifies the effects of different sources of OS Jitter in the Linux operating system. We use the design of experiments (DOE) method to conduct controlled experiments statistically planned. Different...
A number of studies have reported the phenomenon of "Software aging", caused by resource exhaustion and characterized by progressive software performance degradation. We develop experiments that simulate an on-line bookstore application, following the standard configuration of TPC-W benchmark. We study the application failures caused by memory leaks, using the accelerated life tests method...
The high use of system calls in many applications has motivated research works focusing on reducing the overhead caused by these calls. In this work we implement three types of compound system calls, which are evaluated experimentally by taking into account their execution time in systems with 1 to 8 cores. We also investigate the system calls running in both physical and virtual machines. All proposed...
Software aging is a phenomenon defined as the continuing degradation of software systems during runtime, being particularly noticeable in long-running applications. Aging-related failures are very difficult to observe, because the accumulation of aging effects usually requires a long-term execution. Thus, collecting a statistically significant sample of times to aging-related failures so as to estimate...
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