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首页> 外文期刊>International Journal Of Modelling & Simulation >A SIMULATION MODEL FOR PREFETCHING IN A PARALLEL STORAGE TOPOLOGY
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A SIMULATION MODEL FOR PREFETCHING IN A PARALLEL STORAGE TOPOLOGY

机译：并行存储拓扑中预取的仿真模型

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摘要

Modern applications are quite demanding in terms of storage capacities due to the large number of client requests, which most often refer to large data setfors of a diverse nature. This article presents a simulation model prefetching and caching of storage objects under a parallel storage units topology. The data to be stored are defined as variable-sized data blocks, and a. specific cache area is reserved for data prefetchirig and caching. An evolutionary algorithm is proposed for identifying the storage objects to be prefetched, whereas a simulation model is developed to support appropriate parameterization of clients, cache area, and storage units. The parameters defined facilitate the evaluation of expected performance in order to comment on the potential improvements due to prefetching. An experiment is conducted on the storage object prefetching model with artificial workloads of requests under a considered set of parallel storage units; the model shows significant performance improvement with respect to request service times as well as cache and byte hit ratios.
机译：由于大量的客户请求，现代应用程序对存储容量的要求非常高，这些请求通常指的是具有多种性质的大数据集。本文介绍了在并行存储单元拓扑结构下存储对象的预取和缓存的仿真模型。将要存储的数据定义为可变大小的数据块。保留特定的缓存区域用于数据预取和缓存。提出了一种进化算法来识别要预取的存储对象，而开发了一种仿真模型来支持对客户端，缓存区域和存储单元进行适当的参数化。定义的参数有助于评估预期性能，以便对由于预取而带来的潜在改进进行评论。在考虑的一组并行存储单元下，使用人工的请求工作负载对存储对象预取模型进行了实验；该模型在请求服务时间以及缓存和字节命中率方面显示出显着的性能改进。

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