Cache management in scalable network servers

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dc.contributor.advisor Zwaenepoel, Willy
dc.creator Pai, Vivek Sadananda 2009-06-04T07:03:37Z 2009-06-04T07:03:37Z 2000
dc.description.abstract For many users, the perceived speed of computing is increasingly dependent on the performance of network server systems, underscoring the need for high performance servers. Cost-effective scalable network servers can be built on clusters of commodity components (PCs and LANs) instead of using expensive multiprocessor systems. However, network servers cache files to reduce disk access, and the cluster's physically disjoint memories complicate sharing cached file data. Additionally, the physically disjoint CPUs complicate the problem of load balancing. This work examines the issue of cache management in scalable network servers at two levels---per-node (local) and cluster-wide (global). Per-node cache management is addressed by the IO-Lite unified buffering and caching system. Applications and various parts of the operating system currently use incompatible buffering schemes, resulting in unnecessary data copying. For network servers, overall throughput drops for two reasons---copying wastes CPU cycles, and multiple copies of data compete with the filesystem cache for memory. IO-Lite allows applications, the operating system, file system, and network code to safely and securely share a single copy of data. The cluster-wide solution uses a technique called Locality-Aware Request Distribution (LARD) that examines the content of incoming requests to determine which node in a cluster should handle the request. LARD uses the request content to dynamically partition the incoming request stream. This partitioning increases the file cache hit rates on the individual nodes, and it maintains load balance in the cluster.
dc.format.extent 127 p.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subject Engineering, Electronics and Electrical
Computer Science
dc.title Cache management in scalable network servers
dc.type.genre Thesis
dc.type.material Text Engineering Computer Science Rice University Doctoral Doctor of Philosophy
dc.identifier.citation Pai, Vivek Sadananda. (2000) "Cache management in scalable network servers." Doctoral Thesis, Rice University.

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