運用硬體壓縮技術改善NCU MFTVM容錯系統回應時間

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姓名

陳冠丞(Guan-Cheng Chen) 查詢紙本館藏

畢業系所

軟體工程研究所

論文名稱

運用硬體壓縮技術改善NCU MFTVM容錯系統回應時間
(Improving Response Time of NCU MFTVM Fault-Tolerant System based on Hardware Compression Technology)

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至系統瀏覽論文 (2026-9-1以後開放)

摘要(中)

隨著雲端運算與虛擬化技術的普及，利用虛擬機器提供服務，將多個不同伺服器或服務整合至一台實體機器上，以彈性分配和利用硬體資源，但相對於實體機器，虛擬機更易因硬體設備或人為因素發生故障，造成服務中斷，因此必須使用高可用性技術，確保其可用性，基於虛擬化技術的容錯系統能在虛擬機器因某些因素發生故障時保持虛擬機之運行狀態，使服務不中斷，提升系統可用性。本研究基於中央大學平行與分散計算實驗室開發的NCU MFTVM容錯系統上繼續進行開發。NCU MFTVM屬於持續同步架構，持續同步技術不間斷地將主要虛擬機的狀態同步到備援虛擬機上，可透過外部管理介面控制的容錯系統，並基於容錯系統的準則，保持兩者對外輸出的一致性。本研究在虛擬機容錯系統中加入Intel® QAT硬體壓縮功能，改善了容錯系統的壓縮機制，在虛擬機容錯系統在同步大量資料時，降低NCU MFTVM容錯系統的回應時間，提升容錯系統的可靠性以及可用性。

摘要(英)

As cloud computing and virtualization technologies become more widespread, utilizing virtual machines to provide services and consolidating multiple different servers or services onto a single physical machine allows for flexible allocation and utilization of hardware resources. However, compared to physical machines, virtual machines are more prone to failures due to hardware issues or human errors, leading to service corruption. Therefore, it is necessary to employ high availability technologies to ensure their availability. Fault-tolerant systems based on virtualization technology can maintain the operational state of virtual machines when they encounter failures, preventing service disruptions and enhancing system availability.
Our research is based on the NCU MFTVM fault-tolerant system, which belongs to a continuous checkpointing architecture and can be controlled through an external management interface. Continuous checkpointing ensures constant synchronization of the state from the primary virtual machine to the backup virtual machine, adhering to fault-tolerant system criteria to maintain output consistency across both VMs. Ours research incorporates Intel® QAT hardware compression feature into the virtual machine fault-tolerant system, improving the compression mechanism of NCU MFTVM fault-tolerant system and reducing the response time during the synchronization of large amounts of data, thereby enhancing both its reliability and availability.

關鍵字(中)

★ QEMU-KVM
★ 虛擬機器
★ 容錯系統
★ 持續同步
★ 壓縮
★ Intel® QuickAssist Technology

關鍵字(英)

★ QEMU-KVM
★ Virtual Machine
★ Fault-Tolerance
★ Continuous Checkpointing
★ Compression
★ Intel® QuickAssist Technology

論文目次

第一章緒論 1
1-1研究背景 1
1-2研究動機與問題 1
1-3論文貢獻 3
1-4論文架構 4
第二章背景知識與相關研究 5
2-1 QEMU-KVM 5
2-2容錯系統類型 5
2-2-1 Lock-Stepping 5
2-2-2 Continuous Checkpointing 6
2-2-3 Hybrid 6
2-3 Network Output Buffer time 7
2-4 NCU MFTVM 容錯系統 8
2-5壓縮技術 9
2-5-1 XBZRLE ( XOR binary RLE) 9
2-5-2 Zstd 10
2-5-3 Intel® QuickAssist Technology 10
2-6 相關研究 11
第三章系統架構 12
3-1 主要架構 12
3-1-1 Checkpointing and Messaging 12
3-1-2 Autopilot 13
3-1-3 Compression 13
3-2 Intel® QAT module 13
3-3 Intel® QAT used in NCU MFTVM 14
3-3-1 Intel® QAT 初始化 14
3-3-2 Intel® QAT的使用限制 15
3-4 NCU MFTVM Data Flow 17
3-4-1 Checkpoint模組初始化 17
3-4-2 Checkpointing Data Flow with Intel® QAT 17
3-5 NCU MFTVM Compress module 21
3-6 軟硬體壓縮切換機制 22
3-6-1動機與分析方法 22
3-6-2 Checkpoint time and dirty pages in video streaming 23
3-6-3 Checkpoint time and dirty pages in kernel compile 25
3-6-4 Mix Compressor module 26
第四章效能改進 28
4-1實驗環境 28
4-2實驗設計 30
4-3實驗結果 31
4-3-1 Kernel Compile 31
4-3-2 Video application 36
4-3-3 Fio 41
4-4壓縮器效益比較 45
4-4-1 Compressor comparison in kernel compile 45
4-4-2 Compressor comparison in video streaming 47
4-4-3 Compressor comparison in fio 49
第五章結論與未來研究方向 53
5-1結論 53
5-2未來研究方向 53
參考文獻 54

參考文獻

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指導教授

王尉任(Wei-Jen Wang)

審核日期

2024-7-18

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