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Cloud computing is a widespread and commonly used computing paradigm. Cloud relied on virtualization technology to be a scalable and efficient distributed system. In traditional cloud infrastructures, hypervisors like KVM create and manage Virtual Machines according to users’ demands. Recently a more lightweight virtualization technique is being rapidly adopted and it is based on containers.Although...
High performance computing system has become the strong support of scientific research due to the good cost performance ratio and scalability after pure science and experimental science, the performance tests help to find out the performance bottlenecks of HPC systems. How to evaluate the performance of a HPC system is the main purpose of this paper. A high-performance computing system with 16 CPU+GPU...
Traditional data protection technologies, such as remote mirroring, snapshot and backup, cannot completely solve virus attack, user error problems. Continuous data protection (CDP), capturing all data writes at file or block level, is an enabling technology to storage systems against malicious attacks or user mistakes, because it allows each block data to be undoable. Most of existing data protection...
With its growth and wide applications, virtualization has come through a revival in computer system community. Virtualization offers a lot of benefits including flexibility, security, ease to configuration and management, reduction of cost and so forth, but at the same time it also brings a certain degree of performance overhead. Furthermore, virtual machine monitor (VMM) is the core component of...
Replicated file-systems can experience degraded performance that might not be adequately handled by the underlying fault-tolerant protocols. We describe the design and implementation of Gumshoe, a system that aims to diagnose performance problems in replicated file-systems. Gumshoe periodically gathers OS and protocol metrics and then analyzes these metrics to automatically localize the performance...
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