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このアイテムの引用には次の識別子を使用してください:
http://hdl.handle.net/10119/12888
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| タイトル: | Adaptive Real-Time Scheduling for Soft Tasks with Varying Execution Times |
| 著者: | Tanaka, Kiyofumi |
| キーワード: | Real-time scheduling
total bandwidth server (TBS)
worst-case execution time (WCET)
predictive execution time (PET) |
| 発行日: | 2014 |
| 出版者: | 情報処理学会 |
| 誌名: | Journal of Information Processing |
| 巻: | 22 |
| 号: | 2 |
| 開始ページ: | 152 |
| 終了ページ: | 159 |
| DOI: | 10.2197/ipsjjip.22.152 |
| 抄録: | As real-time embedded systems get more diverse and more complicated, systems with different types of tasks (e.g., periodic tasks and aperiodic tasks) are prevailing. In such a system, it is important that schedulability of periodic tasks is guaranteed and at the same time response times to aperiodic requests are short enough. Total Bandwidth Server is one of convincing task scheduling algorithms for mixed task sets of periodic and aperiodic tasks. Considering a fact that in most cases tasks' execution times are much shorter than their worst-case execution times, this paper proposes a method of reducing response times of aperiodic execution by using predictive execution times instead of worst-case execution times for deadline calculations in the total bandwidth server to obtain shorter deadlines, while ensuring the integrity of periodic tasks. In the evaluation by simulation, the proposed method combined with a resource reclaiming technique improved average response times for aperiodic tasks, by up to 22% compared with the original total bandwidth server technique, and by up to 48% compared with Constant Bandwidth Server, which is another algorithm appropriate for tasks with varying execution times. |
| Rights: | 社団法人 情報処理学会, Kiyofumi Tanaka, Journal of Information Processing, 22(2), 2014, 152-159. ここに掲載した著作物の利用に関する注意: 本著作物の著作権は（社）情報処理学会に帰属します。本著作物は著作権者である情報処理学会の許可のもとに掲載するものです。ご利用に当たっては「著作権法」ならびに「情報処理学会倫理綱領」に従うことをお願いいたします。 Notice for the use of this material: The copyright of this material is retained by the Information Processing Society of Japan (IPSJ). This material is published on this web site with the agreement of the author (s) and the IPSJ. Please be complied with Copyright Law of Japan and the Code of Ethics of the IPSJ if any users wish to reproduce, make derivative work, distribute or make available to the public any part or whole thereof. All Rights Reserved, Copyright (C) Information Processing Society of Japan. |
| URI: | http://hdl.handle.net/10119/12888 |
| 資料タイプ: | publisher |
| 出現コレクション: | b10-1. 雑誌掲載論文 (Journal Articles)
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このアイテムのファイル:
| ファイル |
記述 |
サイズ | 形式 |
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| 20866.pdf | | 382Kb | Adobe PDF | 見る/開く |
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