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Virtualization is a convenient way to efficiently utilize the numerous on-chip resources in modern physical platforms. However, it is important to ensure a high performance for the workloads running on such virtualized platforms. One factor which reduces the performance of these virtualized workloads is the frequent flushing of hardware-managed Translation Lookaside Buffers (TLBs). To avoid these...
Recent virtualization-driven CPU architectural extensions involve tagging the hardware-managed Translation Look aside Buffer (TLB) entries to avoid TLB flushes during context switches, thereby sharing the TLB among multiple address spaces. While tagged TLBs are expected to improve the performance of virtualized workloads, a systematic evaluation of this improvement, its dependence on TLB and workload...
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