Despite the fact that large scale shared-memory multiprocessors have been commercially available for several years, system software that fully utilizes all of their features is still not available. These machines require system software that is scalable, supports fault containment, and provides scalable resource management. Software supporting these features is currently unavailable, mostly due...

1389-1286/$ see front matter 2009 Elsevier B.V doi:10.1016/j.comnet.2009.04.015 * Corresponding author. Tel.: +1 503 712 3996; fa E-mail address: [email protected] (R. Iy With cloud and utility computing models gaining significant momentum, data centers are increasingly employing virtualization and consolidation as a means to support a large number of disparate applications running sim...

Virtualization is already a common technology used in data centers as well as on desktop computers; it gains additional momentum with the spread of cloud computing. In this paper we analyze the performance and behavior of virtual resources in multi virtual machine scenarios running the same workload. We evaluate the performance in terms of CPU, memory and disk IO throughput. In doing so we vary...

Continuous memory leaks severely hurt program performance and software availability for garbage-collected programs. This paper presents a safe method, called LeakSurvivor, to tolerate continuous memory leaks at runtime for garbage-collected programs. Our main idea is to periodically swap out the “Potentially Leaked” (PL) memory objects identified by leak detectors from the virtual memory to dis...

This paper describes the design and implementation of the UNIX@ SVR4.2 Virtual Memory (VM) Hardware Address Translation (ÌIAT) layer that can be used as a model for other multiprocessor (MP) platforms in terms of scalability and MP related interfaces between the IIAT layer and the machine independent layer. SVR4.2 is a SVR4.1 ES based kernel that suppo¡s shared memory multiprocessors and light ...

In recent years we have seen an explosion of markets for portable electronic devices such as PDAs, personal communicators and mobile phones. The size and complexity of applications, but also development constraints like getting the product to market on time make the use of high-level languages like Java necessary. Java 2 Micro Edition (J2ME) has emerged as a good solution for developing applica...

objective: memory impairment is one of the most pervasive cognitive dysfunctions in schizophrenic patients. the aim of the current study was to conduct the most comprehensive assessment of how prospective memory (pm) is affected in schizophrenia in comparison with healthy controls. methods: in this study, 30 first-episode schizophrenic patients who fulfilled the diagnostic criteria of the diagn...

Java S automatic memory management is the main reason that prevents Java from being used in hard realtime environments. We present the garbage collection mechanism that is used by the Jamaica Virtual Machine, an implementation of the Java Virtual Machine Specification. This mechanism differs significantly from existing implementations in the way threads are implemented, root references are foun...

We investigate using the GP paradigm to evolve linear genotypes (individuals) that consist of Java byte code. Our prototype GP system (bcGP) is implemented in Java. The evolutionary process is done completely in memory and the fitness of individuals is determined by directly executing them in the Java Virtual Machine (JVM). Our scheme is an effective means for evolving native machine code for t...