research-article

Split-level I/O scheduling

Authors:

Nishant Agrawal,

Salini Selvaraj Kowsalya,

Anand Krishnamurthy,

Samer Al-Kiswany,

Rini T. Kaushik,

Andrea C. Arpaci-Dusseau,

Remzi H. Arpaci-DusseauAuthors Info & Claims

SOSP '15: Proceedings of the 25th Symposium on Operating Systems Principles

Pages 474 - 489

https://doi.org/10.1145/2815400.2815421

Published: 04 October 2015 Publication History

Abstract

We introduce split-level I/O scheduling, a new framework that splits I/O scheduling logic across handlers at three layers of the storage stack: block, system call, and page cache. We demonstrate that traditional block-level I/O schedulers are unable to meet throughput, latency, and isolation goals. By utilizing the split-level framework, we build a variety of novel schedulers to readily achieve these goals: our Actually Fair Queuing scheduler reduces priority-misallocation by 28x; our Split-Deadline scheduler reduces tail latencies by 4x; our Split-Token scheduler reduces sensitivity to interference by 6x. We show that the framework is general and operates correctly with disparate file systems (ext4 and XFS). Finally, we demonstrate that split-level scheduling serves as a useful foundation for databases (SQLite and PostgreSQL), hypervisors (QEMU), and distributed file systems (HDFS), delivering improved isolation and performance in these important application scenarios.

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Cited By

Zhang YZhao SChen GLuo HHuang K(2024)Timing-accurate scheduling and allocation for parallel I/O operations in real-time systemsJournal of Systems Architecture10.1016/j.sysarc.2024.103158(103158)Online publication date: May-2024
https://doi.org/10.1016/j.sysarc.2024.103158
Jaliminche LChakraborttii CChoi CLitz H(2023)Enabling Multi-tenancy on SSDs with Accurate IO Interference ModelingProceedings of the 2023 ACM Symposium on Cloud Computing10.1145/3620678.3624657(216-232)Online publication date: 30-Oct-2023
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Zhou DAschenbrenner VLyu TZhang JKannan SKashyap SDruschel PKaufmann AMace JFlinn JSeltzer M(2023)Enabling High-Performance and Secure Userspace NVM File Systems with the Trio ArchitectureProceedings of the 29th Symposium on Operating Systems Principles10.1145/3600006.3613171(150-165)Online publication date: 23-Oct-2023
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Split-level I/O scheduling

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cover image ACM Conferences

SOSP '15: Proceedings of the 25th Symposium on Operating Systems Principles

October 2015

499 pages

ISBN:9781450338349

DOI:10.1145/2815400

General Chair:
Ethan Miller
UC Santa Cruz
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Published: 04 October 2015

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SOSP '15: ACM SIGOPS 25th Symposium on Operating Systems Principles

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SOSP '15 Paper Acceptance Rate 30 of 181 submissions, 17%;

Overall Acceptance Rate 131 of 716 submissions, 18%

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Cited By

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https://doi.org/10.1016/j.sysarc.2024.103158
Jaliminche LChakraborttii CChoi CLitz H(2023)Enabling Multi-tenancy on SSDs with Accurate IO Interference ModelingProceedings of the 2023 ACM Symposium on Cloud Computing10.1145/3620678.3624657(216-232)Online publication date: 30-Oct-2023
https://dl.acm.org/doi/10.1145/3620678.3624657
Zhou DAschenbrenner VLyu TZhang JKannan SKashyap SDruschel PKaufmann AMace JFlinn JSeltzer M(2023)Enabling High-Performance and Secure Userspace NVM File Systems with the Trio ArchitectureProceedings of the 29th Symposium on Operating Systems Principles10.1145/3600006.3613171(150-165)Online publication date: 23-Oct-2023
https://dl.acm.org/doi/10.1145/3600006.3613171
Whitaker CSundar SHarris BAltiparmak NTarasov VZhang YAnwar AMi N(2023)Do we still need IO schedulers for low-latency disks?Proceedings of the 15th ACM Workshop on Hot Topics in Storage and File Systems10.1145/3599691.3603400(44-50)Online publication date: 9-Jul-2023
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