随着网页内容和功能的丰富以及用户体验需求的提升,移动Web浏览中的计算能耗与日俱增.DVFS(Dynamic Voltage and Frequency Scaling)技术在同构多核架构中取得较好的节能效果,但在异构多核架构中,由于系统默认的调度策略没有充分利用低...随着网页内容和功能的丰富以及用户体验需求的提升,移动Web浏览中的计算能耗与日俱增.DVFS(Dynamic Voltage and Frequency Scaling)技术在同构多核架构中取得较好的节能效果,但在异构多核架构中,由于系统默认的调度策略没有充分利用低功耗核心,导致高性能核心的工作频率和时间往往高于实际需求,浪费大量电能.而面向异构平台的Linux HMP(Heterogeneous Multi-Processing)技术也没有充分利用异构平台的特性,无法对能效进行有效的提升.针对上述问题,该文面向移动异构平台,提出了一种基于支持向量机的CPU配置预测模型.首先选取500个热门网站主页,分析其主页面的架构(HTML)及样式(CSS)信息,进行特征选择;遍历不同CPU配置渲染网页,记录获得最优加载时间、能耗及EDP对应CPU配置;最后在线下利用支持向量机自主挖掘网页特征同最优配置的内在关系,以此构建移动异构平台的CPU资源调度预测模型.该模型通过分析网页特征,根据不同的优化目标,为渲染引擎分配合适的处理器资源.实验结果显示,同目前最先进的一种线性回归预测模型相比,该文提出的CPU资源调度模型在加载时间、能耗和EDP上的性能得到显著提升.展开更多
With evolution of Internet ,many cooperative information systems are developed and deployed. These sys-tems may not meet the requirements of clients because of best-efforts in Internet sometimes,so a lot of techniques...With evolution of Internet ,many cooperative information systems are developed and deployed. These sys-tems may not meet the requirements of clients because of best-efforts in Internet sometimes,so a lot of techniques areprovided to satisfy the Web-QOS(Quality Of Services)now. It is important to understand Web delay and to decreasethe delay. In this paper, the Web delay is characterized from both network protocols and network architecture, andsome basic techniques are discussed to shorten the delay, furthermore assessments of these techniques are giv-en. Finally,a cooperative assigning model is presented to balance workloads and to decrease the delay on the basis ofmeasuring performances of both networks and servers.展开更多
文摘随着网页内容和功能的丰富以及用户体验需求的提升,移动Web浏览中的计算能耗与日俱增.DVFS(Dynamic Voltage and Frequency Scaling)技术在同构多核架构中取得较好的节能效果,但在异构多核架构中,由于系统默认的调度策略没有充分利用低功耗核心,导致高性能核心的工作频率和时间往往高于实际需求,浪费大量电能.而面向异构平台的Linux HMP(Heterogeneous Multi-Processing)技术也没有充分利用异构平台的特性,无法对能效进行有效的提升.针对上述问题,该文面向移动异构平台,提出了一种基于支持向量机的CPU配置预测模型.首先选取500个热门网站主页,分析其主页面的架构(HTML)及样式(CSS)信息,进行特征选择;遍历不同CPU配置渲染网页,记录获得最优加载时间、能耗及EDP对应CPU配置;最后在线下利用支持向量机自主挖掘网页特征同最优配置的内在关系,以此构建移动异构平台的CPU资源调度预测模型.该模型通过分析网页特征,根据不同的优化目标,为渲染引擎分配合适的处理器资源.实验结果显示,同目前最先进的一种线性回归预测模型相比,该文提出的CPU资源调度模型在加载时间、能耗和EDP上的性能得到显著提升.
文摘With evolution of Internet ,many cooperative information systems are developed and deployed. These sys-tems may not meet the requirements of clients because of best-efforts in Internet sometimes,so a lot of techniques areprovided to satisfy the Web-QOS(Quality Of Services)now. It is important to understand Web delay and to decreasethe delay. In this paper, the Web delay is characterized from both network protocols and network architecture, andsome basic techniques are discussed to shorten the delay, furthermore assessments of these techniques are giv-en. Finally,a cooperative assigning model is presented to balance workloads and to decrease the delay on the basis ofmeasuring performances of both networks and servers.
