Byte-Addressable Persistent RAM APIs for Flexible Memory Management and Protection

Febiansyah, Hidayat; Kwon, Jin Baek

doi:10.1007/978-94-007-5857-5_28

Cited by 1 publication

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“…Byte-addressable persistent RAM APIs ( Febiansyah and Kwon 2013 ) discusses the APIs that address wear leveling, which is required by some types of NV memory. While wear leveling is an important issue to support NV memory, it is outside the scope of this paper since our focus of this paper is to propose the methods that can integrate the management of main memory and storage.…”

Section: Related Workmentioning

confidence: 99%

Non-volatile main memory management methods based on a file system

Oikawa

2014

SpringerPlus

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There are upcoming non-volatile (NV) memory technologies that provide byte addressability and high performance. PCM, MRAM, and STT-RAM are such examples. Such NV memory can be used as storage because of its data persistency without power supply while it can be used as main memory because of its high performance that matches up with DRAM. There are a number of researches that investigated its uses for main memory and storage. They were, however, conducted independently. This paper presents the methods that enables the integration of the main memory and file system management for NV memory. Such integration makes NV memory simultaneously utilized as both main memory and storage. The presented methods use a file system as their basis for the NV memory management. We implemented the proposed methods in the Linux kernel, and performed the evaluation on the QEMU system emulator. The evaluation results show that 1) the proposed methods can perform comparably to the existing DRAM memory allocator and significantly better than the page swapping, 2) their performance is affected by the internal data structures of a file system, and 3) the data structures appropriate for traditional hard disk drives do not always work effectively for byte addressable NV memory. We also performed the evaluation of the effects caused by the longer access latency of NV memory by cycle-accurate full-system simulation. The results show that the effect on page allocation cost is limited if the increase of latency is moderate.

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Section: Related Workmentioning

confidence: 99%

Non-volatile main memory management methods based on a file system

Oikawa

2014

SpringerPlus

View full text Add to dashboard Cite

show abstract

Byte-Addressable Persistent RAM APIs for Flexible Memory Management and Protection

Cited by 1 publication

References 12 publications

Non-volatile main memory management methods based on a file system

Non-volatile main memory management methods based on a file system

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