PTEMagnet: fine-grained physical memory reservation for faster page walks in public clouds

Margaritov, Artemiy; Ustiugov, Dmitrii; Shahab, Amna; Grot, Boris

doi:10.1145/3445814.3446704

Cited by 9 publications

(1 citation statement)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Note also that more page compaction is required in cloud environments, whose computational resources are typically virtualized. The use of process container services such as dockers on virtual machines (VMs) causes significant memory fragmentation [19]. For example, Microsoft Azure offers Docker's containers on VMs.…”

Section: Memory Virtualizationmentioning

confidence: 99%

Comparison of Value- and Reference-Based Memory Page Compaction in Virtualized Systems

Aoyama

Yamada

2022

IEICE Trans. Inf. & Syst.

View full text Add to dashboard Cite

The issue of copying values or references has historically been studied for managing memory objects, especially in distributed systems. In this paper, we explore a new topic on copying values v.s. references, for memory page compaction on virtualized systems. Memory page compaction moves target physical pages to a contiguous memory region at the operating system kernel level to create huge pages. Memory virtualization provides an opportunity to perform memory page compaction by copying the references of the physical pages. That is, instead of copying pages' values, we can move guest physical pages by changing the mappings of guest-physical to machine-physical pages. The goal of this paper is a quantitative comparison between value-and reference-based memory page compaction. To do so, we developed a software mechanism that achieves memory page compaction by appropriately updating the references of guest-physical pages. We prototyped the mechanism on Linux 4.19.29 and the experimental results show that the prototype's page compaction is up to 78% faster and achieves up to 17% higher performance on the memory-intensive real-world applications as compared to the default value-copy compaction scheme.

show abstract

Section: Memory Virtualizationmentioning

confidence: 99%