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The growing gap between microprocessor speed and DRAM speed is a major problem that computer designers are facing. In order to narrow the gap, it is necessary to improve DRAM's speed and throughput. Moreover, on multi-core platforms, DRAM memory shared by all cores usually suffers from the memory contention and interference problem, which can cause serious performance degradation and unfairness among...
Single-ISA heterogeneous multi-core processors have advantages over cost-equivalent homogeneous ones, which integrate cores having the same instruction set architecture (ISA) but offer different performance and power characteristics. When these cores share the off-chip main memory, requests from different cores will interfere with each other, leading to low system performance and unfairness even starvation...
Improving power efficiency of processor and memory has recently received a lot of attention. However, most existing solutions concentrate on processor or memory separately and cannot combine well to simultaneously improve both. This paper presents a solution to improve both processor and memory power efficiency simultaneously through group scheduling (GS) which managing CPU frequency and memory rank...
The performance of a Web server is essential to Web services. An accuracy performance model can help us evaluate the performance of a Web server efficiently and effectively. We present evaluation mode—Web Server performance evaluation Model Based on the Response Time (for short, MBRT) to evaluate the peak load of a Web server with given configuration. It based on the special relationship between the...
In this paper we present results from test and quantitative analysis of leading hypervisors Xen, Kvm and Vmware. Our test comparison was carried out using benchmarks which can performance on the overall performance, performance isolation, and scalability of virtual machines running on these three hypervisors. To compare, we need to measure the efficiency of the virtualization technologies. We define...
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