請用此 Handle URI 來引用此文件：
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/84131完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 郭大維 | zh_TW |
| dc.contributor.advisor | Tei-Wei Kuo | en |
| dc.contributor.author | 徐琮彥 | zh_TW |
| dc.contributor.author | Tsung-Yen Hsu | en |
| dc.date.accessioned | 2023-03-19T22:05:09Z | - |
| dc.date.available | 2023-12-27 | - |
| dc.date.copyright | 2022-07-22 | - |
| dc.date.issued | 2022 | - |
| dc.date.submitted | 2002-01-01 | - |
| dc.identifier.citation | [1] A. Developer. Memory allocation among processes. [Online]. Available: https://developer.android.com/topic/performance/memory-management 2
[2] C.-F. Wu, Y.-H. Chang, M.-C. Yang, and T.-W. Kuo, “When storage response time catches up with overall context switch overhead, what is next?” IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, vol. 39, no. 11, pp. 4266–4277, 2020. 2 [3] Y. Liang, J. Li, R. Ausavarungnirun, R. Pan, L. Shi, T.-W. Kuo, and C. J. Xue,“Acclaim: Adaptive memory reclaim to improve user experience in android systems,” in 2020 USENIX Annual Technical Conference (USENIX ATC 20), 2020, pp. 897–910. 2 [4] J. Kim and H. Bahn, “Analysis of smartphone i/o characteristics—toward efficient swap in a smartphone,” IEEE Access, vol. 7, pp. 129 930–129 941, 2019. 2 [5] Y.-X. Wang, C.-H. Tsai, and L.-P. Chang, “Killing processes or killing flash? escaping from the dilemma using lightweight, compression-aware swap for mobile devices,” ACM Transactions on Embedded Computing Systems (TECS), vol. 20, no. 5s, pp. 1–24, 2021. 2 [6] T.-Y. Chen, Y.-H. Chang, S.-H. Chen, C.-C. Kuo, M.-C. Yang, H.-W.Wei, and W.-K. Shih, “Enabling write-reduction strategy for journaling file systems over byte-addressable nvram,” in Proceedings of the 54th Annual Design Automation Conference 2017, 2017, pp. 1–6. 2 [7] M.-C. Yang, C.-F. Wu, S.-H. Chen, Y.-L. Lin, C.-W. Chang, and Y.-H. Chang,“On minimizing internal data migrations of flash devices via lifetime-retention harmonization,” IEEE Transactions on Computers, vol. 70, no. 3, pp. 428–439, 2021. 2 [8] A. Developer. Slow rendering. [Online]. Available: https://developer.android. com/topic/performance/vitals/render 4 [9] A. Balsini. Scheduling for the android display pipeline. [Online]. Available: https://https://lwn.net/Articles/809545/ 4 [10] J. Corbet. Scheduler utilization clamping. [Online]. Available: https://lwn.net/Articles/762043/ 12 [11] Kernel.Org. Cpu performance scaling. [Online]. Available: https://www.kernel.org/doc/html/v4.14/admin-guide/pm/cpufreq.html 12 [12] A. Developer. dumpsys. [Online]. Available: https://developer.android.com/studio/command-line/dumpsys 13 [13] J. Yu, H. Han, H. Zhu, Y. Chen, J. Yang, Y. Zhu, G. Xue, and M. Li, “Sensing human-screen interaction for energy-efficient frame rate adaptation on smartphones,” IEEE Transactions on Mobile Computing, vol. 14, no. 8, pp.1698–1711, 2015. 14 [14] Kernel.Org. Energy aware scheduling. [Online]. Available: https://www.kernel.org/doc/html/latest/scheduler/sched-energy.html 15 [15] ——. Over-utilization. [Online]. Available: https://www.kernel.org/doc/html/latest/scheduler/sched-energy.html#over-utilization 17 | - |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/84131 | - |
| dc.description.abstract | 大量現代移動應用程序需要高幀率的 UI 渲染，尤其是遊戲或基於 Web 的滾動多媒體視圖。 此外，Android平台運行的前提是空閒內存是浪費內存，所以它總是試圖使用所有可用內存，從而增加內存壓力。 在本文中，我們觀察到當系統內存壓力較高時會出現 QoS 問題。 通過對 UI 渲染的案例研究，我們提出了一個可感知QoS 的調度方法，以滿足高幀率性能和最小的功耗。 實驗結果表明，所提出的解決方案能夠有效地解決 QoS 問題，性能提高了 55%，而功耗僅增加了 11%。 | zh_TW |
| dc.description.abstract | A vast amount of modern mobile applications demand high frame rate on UI rendering, especially games or scrolling web-based multimedia views. Moreover, the Android platform runs on the premise that free memory is wasted memory so it tries to use all of the available memory at all times hence enhancing the memory pressure. In this article, we observe that QoS problem occurs when system memory pressure is high. By a case study on UI rendering, we proposed a QoS-aware scheduling scheme to satisfy the high frame rate performance with minimized power consumption. The experimental results showed that the proposed solution is able to solve the QoS problem efficiently by improving up to 55\% performance while merely increasing 11\% power consumption. | en |
| dc.description.provenance | Made available in DSpace on 2023-03-19T22:05:09Z (GMT). No. of bitstreams: 1 U0001-1307202201380300.pdf: 1118196 bytes, checksum: 87de8dc4d85e026941098af030c08a97 (MD5) Previous issue date: 2022 | en |
| dc.description.tableofcontents | 1 Introduction 1
2 Background and Motivation 4 2.1 Background 4 2.2 Motivation 6 3 A QoS-aware Scheduling Scheme 8 3.1 Overview 8 3.2 UI Monitor 9 3.3 Frame-Time Driven Utilization Estimator 10 4 Performance Evaluation 13 4.1 Experimental Setup and Performance Metrics 13 4.2 Speed of Scrolling Screen 15 4.3 Statistical Scheme for Forecasting Frame Time 17 4.4 Performance Comparison 18 5 Concluding Remarks and Future Work 21 Reference 22 | - |
| dc.language.iso | zh_TW | - |
| dc.subject | 服務品質 | zh_TW |
| dc.subject | 安卓系統 | zh_TW |
| dc.subject | 排程器 | zh_TW |
| dc.subject | 高幀率 | zh_TW |
| dc.subject | 安卓系統 | zh_TW |
| dc.subject | 服務品質 | zh_TW |
| dc.subject | 排程器 | zh_TW |
| dc.subject | 高幀率 | zh_TW |
| dc.subject | High Frame Rate | en |
| dc.subject | Scheduler | en |
| dc.subject | Android | en |
| dc.subject | Android | en |
| dc.subject | High Frame Rate | en |
| dc.subject | Scheduler | en |
| dc.subject | QoS | en |
| dc.subject | QoS | en |
| dc.title | 安卓智慧型手機上的一個可感知服務品質排程方法 | zh_TW |
| dc.title | A QoS-aware Scheduling Scheme over Android Smart Phones | en |
| dc.type | Thesis | - |
| dc.date.schoolyear | 110-2 | - |
| dc.description.degree | 碩士 | - |
| dc.contributor.coadvisor | 張原豪 | zh_TW |
| dc.contributor.coadvisor | Yuan-Hao Chang | en |
| dc.contributor.oralexamcommittee | 洪士灝;施吉昇;薛智文 | zh_TW |
| dc.contributor.oralexamcommittee | Shih-Hao Hung;Chi-Sheng Shih;Chih-Wen Hsueh | en |
| dc.subject.keyword | 安卓系統,服務品質,排程器,高幀率, | zh_TW |
| dc.subject.keyword | Android,QoS,Scheduler,High Frame Rate, | en |
| dc.relation.page | 23 | - |
| dc.identifier.doi | 10.6342/NTU202201439 | - |
| dc.rights.note | 同意授權(限校園內公開) | - |
| dc.date.accepted | 2022-07-13 | - |
| dc.contributor.author-college | 電機資訊學院 | - |
| dc.contributor.author-dept | 資訊工程學系 | - |
| dc.date.embargo-lift | 2025-07-18 | - |
| 顯示於系所單位： | 資訊工程學系 | |
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|---|---|---|---|
| ntu-110-2.pdf 授權僅限NTU校內IP使用（校園外請利用VPN校外連線服務） | 1.09 MB | Adobe PDF |
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