Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/19137
標題: 基於預取與暫存技術上的硬碟工作排程省電方法
Disk Power-aware Scheduling Scheme Based-on Energy Efficient Prefetching and Caching
作者: 盧慶達
jerrylu
關鍵字: disk power-aware
硬碟省電
出版社: 資訊科學研究所
摘要: 近年來由於資訊科技的蓬勃發展,硬碟在傳輸速度與儲存容量上都有顯著的提升。相對的,硬碟在運算時消耗的電源並沒有降低,這對於可攜式系統的使用時間造成影響,因此,我們需要一套有效的電源管理機制確保硬碟只有在系統需要存取資料時運轉,藉此提高可攜式系統的使用時間,本篇論文以預取與暫存電源管理機制為基礎,在這套電源管理方法上再提供省電工作排程讓省電效率進一步的提升,我們提出三種排程演算法,列舉如下: 1. 當硬碟電源狀態為一般模式時的排程演算法。 2. 當硬碟電源狀態為省電模式時的排程演算法。 3. 剩餘預取資料低於門檻時的排程演算法。 透過這三種排程演算法,系統能夠讓硬碟產生一段穩定且相當長的空轉時間讓省電效率達到最高。
During the past few years, with the dramatic improvement of information technology , modern disk can transmit data in high rotational speed and provide large capacity. However, the disk energy consuming still not improved that limits mobile computer's battery lifetime. In this paper, we build a disk power-aware scheduling scheme based on energy efficient pre-fetching and caching to extend disk idle time in the low power mode. We provide three scheduling algorithms listing as follows: 1. Disk in spinning mode task scheduling algorithm. 2. Disk in spin down mode task scheduling algorithm. 3. Task remains pre-fetch data smaller than threshold task scheduling algorithm. By applying these three power management schemes can extend mobile computer's battery lifetime with dramatically improvement.
URI: http://hdl.handle.net/11455/19137
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