in the cache. We utilize a trace of client requests to a busy Web proxy in an ISP environment to evaluate the performance of several existing replacement policies and of two new, parameterless replacement policies that we introduce in this paper. Finally, we introduce Virtual Caches, an approach for improving

Modern high-end disk arrays often have several gigabytes of cache RAM. Unfortunately, most array caches use management policies which duplicate the same data blocks at both the client and array levels of the cache hierarchy: they are inclusive. Thus, the aggregate cache behaves as if it was only

Abstract—With the recent explosion in usage of the World Wide Web, the problem of caching Web objects has gained considerable importance. Caching on the Web differs from traditional caching in several ways. The nonhomogeneity of the object sizes is probably the most important such difference

The role of the operating system (OS) in managing shared resources such as CPU time, memory, peripherals, and even energy is well motivated and understood [23]. Unfortu-nately, one key resource|lower-level shared cache in chip multi-processors|is commonly managed purely in hardware by rudimentary

for prefetching. We discuss two salient elements of Fido- MLP, a replace-ment policy for managing prefetched objects, and Estimating Prophet, the component that recognizes patterns and predicts access. We then present some early simulation results which suggest that predictive caching works well and conclude

Commercial database systems make extensive use of caching to speed up query execution. Semantic caching is the idea of caching actual query results in the hope of being able to reuse them to speed up subsequent queries. This paper deals with cache management policies, which refer to policies

intensively. Since an independent board is a tougher monitor, the CEO may be reluctant to share information with it. Thus, management-friendly boards can be optimal. Using the insights from the model, we analyze the differences between sole and dual board systems. We highlight several policy implications

of both single and inter-networked clouds (federation of clouds). Moreover, it exposes custom interfaces for implementing policies and provisioning techniques for allocation of VMs under inter-networked Cloud computing scenarios. Several researchers from organisations such as HP Labs in USA are using

We consider how to improve the performance of file caching by allowing user-level control over file cache replacement decisions. We use two-level cache management: the kernel allocates physical pages to individual applications (allocation), and each application is responsible for deciding how

This paper presents and studies a distributed L2 cache management approach through OS-level page allocation for future many-core processors. L2 cache management is a crucial multicore processor design aspect to overcome non-uniform cache access latency for good program performance and to reduce on