Sharing of code among applications executing in separate virtual machines can lead to memory footprint reductions and to performance improvements. The design of a general and acceptable sharing mechanism is challenging because of several constraints: performance considerations, the possibility of dynamic class loading, dependencies between shared code and the runtime system, and the potential o...

migration of virtual machine (vm) is a critical challenge in cloud computing. the process to move vms or applications from one physical machine (pm) to another is known as vm migration. in vm migration several issues should be considered. one of the major issues in vm migration problem is selecting an appropriate pm as a destination for a migrating vm. to face this issue, several approaches are...

Safe is a first-order functional language with unusual memory management features: memory can be both explicitly and implicitly deallocated at some specific points in the program text, and there is no need for a runtime garbage collector. The final code is bytecode of the Java Virtual Machine (JVM), so the language is useful for programming small devices based on this machine. As an intermediat...

In a typical online learning scenario, a learner is required to process a large data stream using a small memory buffer. Such a requirement is usually in conflict with a learner’s primary pursuit of prediction accuracy. To address this dilemma, we introduce a novel Bayesian online classification algorithm, called the Virtual Vector Machine. The virtual vector machine allows you to smoothly trad...

Increasing energy consumption in server consolidation environments leads to high maintenance costs for data centers. Main memory, no less than processor, is a major energy consumer in this environment. This paper proposes a problem of reducing memory energy consumption using virtual machine scheduling in multi-core systems. We prove that scheduling virtual machines to minimize the memory energy...

Virtualization plays a very vital role in the big cloud federation. Live and Real-time virtual machine migration is always a challenging task in virtualized environment, different approaches, techniques and models have already been presented and implemented by many researchers. The aim of this work is to investigate various parameters of Real-time and live data migration of virtual machines in ...

In virtual machine systems, with the increase in the number of VMs and the demands of the applications, the main memory is becoming a bottleneck for the application performance. To improve paging performance and alleviating thrashing behavior for memory-intensive or I/O-intensive virtual machine workloads, we proposed hypervisor based remote paging, which allows a virtual machine to transparent...

ÐThis paper introduces DISK, a distributed Java Virtual Machine for networks of heterogenous workstations. Several research issues are addressed. A novelty of the system is its object-based, multiple-writer memory consistency protocol (OMW). The correctness of the protocol and its Java compliance is demonstrated by comparing the nonoperational definitions of Release Consistency, the consistency...

Due to their tight memory constraints, small microcontroller based embedded systems have traditionally been implemented using lowlevel languages. This paper shows that the Scheme programming language can also be used for such applications, with less than 7 kB of total memory. We present PICOBIT, a very compact implementation of Scheme suitable for memory constrained embedded systems. To achieve...