仮想化環境下における下位キャッシュの参照の時間的局所性の解析

概要

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As cloud computing has spread widely, virtualized environment is increasing its importance. In virtualized environment,two operating systems, which are a guest operating system and a host operating system, run concurrently. Bothof them have caching function, thus two caches work simultaneously. In most cases, LRU cache replacement algorithmis applied to a guest operating system cache. Applying LRU in the upper cache, which is the guest operating systemcache, leads negative temporal locality of reference in the lower cache, which is the host operating system cache. ThusLRU may not work effectively in the lower cache. In this paper, we explore locality of reference in a host operating systemcache. In addition, we evaluate performance of existing cache replacement algorithms in a host operating systemcache with our simulation and that of an implementation of practical operating system.
2014-04-30