Practical Enhancement of User Experience in NVMe SSDs
When processing I/O requests, the current Linux kernel does not adequately consider the urgency of user-centric tasks closely related to user experience. To solve this critical problem, we developed a practical method in this study to enhance user experience in a computing environment wherein non-vo...
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doaj-fb1e285a30394478aafcbba7a76271182020-11-25T03:23:38ZengMDPI AGApplied Sciences2076-34172020-07-01104765476510.3390/app10144765Practical Enhancement of User Experience in NVMe SSDsSeongmin Kim0Kyusik Kim1Heeyoung Shin2Taeseok Kim3Department of Computer Engineering, Kwangwoon University, 20, Gwangun-ro, Nowon-gu, Seoul 01897, KoreaDepartment of Computer Engineering, Kwangwoon University, 20, Gwangun-ro, Nowon-gu, Seoul 01897, KoreaDepartment of Intelligent System and Embedded Software Engineering, Kwangwoon University, 20, Gwangun-ro, Nowon-gu, Seoul 01897, KoreaSchool of Computer and Information Engineering, Kwangwoon University, 20, Gwangun-ro, Nowon-gu, Seoul 01897, KoreaWhen processing I/O requests, the current Linux kernel does not adequately consider the urgency of user-centric tasks closely related to user experience. To solve this critical problem, we developed a practical method in this study to enhance user experience in a computing environment wherein non-volatile memory express (NVMe) solid-state drives (SSDs) serve as storage devices. In our proposed scheme, I/O requests that originate from the user-centric tasks were preferentially served across various levels of queues by modifying the multi-queue block I/O layer of the Linux kernel, considering the dispatch method of NVMe SSDs. Our scheme tries to give as fast a path as possible for I/O requests from user-centric tasks among many queues with different levels. Especially, when the SSD is overburdened, it avoids the queues with many pending I/O requests and thus can significantly reduce the I/O latency of user-centric tasks. We implemented our proposed scheme in the Linux kernel and performed practical evaluations on a commercial SSD. The experimental results showed that the proposed scheme achieved significant enhancement in the launch time of five widely used applications by up to ~65%.https://www.mdpi.com/2076-3417/10/14/4765NVMe SSDuser experiencemulti-queue block I/O layer |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Seongmin Kim Kyusik Kim Heeyoung Shin Taeseok Kim |
spellingShingle |
Seongmin Kim Kyusik Kim Heeyoung Shin Taeseok Kim Practical Enhancement of User Experience in NVMe SSDs Applied Sciences NVMe SSD user experience multi-queue block I/O layer |
author_facet |
Seongmin Kim Kyusik Kim Heeyoung Shin Taeseok Kim |
author_sort |
Seongmin Kim |
title |
Practical Enhancement of User Experience in NVMe SSDs |
title_short |
Practical Enhancement of User Experience in NVMe SSDs |
title_full |
Practical Enhancement of User Experience in NVMe SSDs |
title_fullStr |
Practical Enhancement of User Experience in NVMe SSDs |
title_full_unstemmed |
Practical Enhancement of User Experience in NVMe SSDs |
title_sort |
practical enhancement of user experience in nvme ssds |
publisher |
MDPI AG |
series |
Applied Sciences |
issn |
2076-3417 |
publishDate |
2020-07-01 |
description |
When processing I/O requests, the current Linux kernel does not adequately consider the urgency of user-centric tasks closely related to user experience. To solve this critical problem, we developed a practical method in this study to enhance user experience in a computing environment wherein non-volatile memory express (NVMe) solid-state drives (SSDs) serve as storage devices. In our proposed scheme, I/O requests that originate from the user-centric tasks were preferentially served across various levels of queues by modifying the multi-queue block I/O layer of the Linux kernel, considering the dispatch method of NVMe SSDs. Our scheme tries to give as fast a path as possible for I/O requests from user-centric tasks among many queues with different levels. Especially, when the SSD is overburdened, it avoids the queues with many pending I/O requests and thus can significantly reduce the I/O latency of user-centric tasks. We implemented our proposed scheme in the Linux kernel and performed practical evaluations on a commercial SSD. The experimental results showed that the proposed scheme achieved significant enhancement in the launch time of five widely used applications by up to ~65%. |
topic |
NVMe SSD user experience multi-queue block I/O layer |
url |
https://www.mdpi.com/2076-3417/10/14/4765 |
work_keys_str_mv |
AT seongminkim practicalenhancementofuserexperienceinnvmessds AT kyusikkim practicalenhancementofuserexperienceinnvmessds AT heeyoungshin practicalenhancementofuserexperienceinnvmessds AT taeseokkim practicalenhancementofuserexperienceinnvmessds |
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