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- W3204687375 abstract "As applications are often allocated more memory than they actually used to cope with peak memory demand due to the workload dynamics in virtualized systems running multiple virtual machines, memory adjustment by reclaiming inactive memory in virtual machines is an effective way to enable memory overcommitment so as to reduce the cost. However, existing schemes are designed based on one-shot adjustment, which may reclaim a large size in a single operation, and they are unaware of both memory access dynamics and memory sensitivity of different applications, so they usually result in excessive reclamation and lead to severe performance slowdown. To address this issue, we propose PMA, a progressive memory adjustment scheme that takes into consideration both memory access dynamics and memory sensitivity and leverages virtual machine performance feedback to progressively reclaim inactive memory to avoid performance slowdown. Besides, PMA is designed based on ballooning (i.e., the balloon driver) so it preserves the good isolation between host and virtual machines for full virtualization systems. We also implement a prototype in host user space, and experiments show that PMA effectively limits the performance drop of memory overcommitment (e.g., the performance drop of every virtual machine is limited within 10% for up to 33% memory overcommitment), which is already very close to the optimal case of having enough memory, so PMA is efficient to enable memory overcommitment with performance guarantee in full virtualization systems." @default.
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- W3204687375 date "2021-08-09" @default.
- W3204687375 modified "2023-10-18" @default.
- W3204687375 title "Progressive Memory Adjustment with Performance Guarantee in Virtualized Systems" @default.
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- W3204687375 doi "https://doi.org/10.1145/3472456.3472491" @default.
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