摘要
IT系统能耗的节节攀升,使得设计新一代DBMS时必须考虑其能耗效率问题。由于SQL语句的执行过程大约消耗70%~90%的数据库资源,因此对SQL进行能耗建模及优化对提高数据库的能源使用效率具有重要的意义。在对SQL查询处理机制进行研究的基础上,构建了SQL能耗模型,并对一系列查询优化原则进行了实验,以表明不同优化原则对性能提升及能耗减少的有效性。实验及能耗数据分析表明:CPU利用率是影响系统功耗的最关键因素,SQL能耗优化方法可忽略内存优化且应该均衡考虑性能优化及功耗优化两方面,提出的SQL能耗模型及节能优化方法具有较强的应用价值。
The increasing energy consumption of IT system makes us take energy efficiency into consideration when de- signing a new generation of DBMS. Because SQL queries consumes almost 70 %- 90 % of the database resources, the energy efficiency of database can be improved by optimizing query and energy consumption modeling. After an in-depth study on optimization of query processing mechanism, an energy consumption model for SQL was proposed and many experiments were designed on a series of query optimization methods to show their effectiveness of performance im- provement and energy reduction. Experiments and energy consumption data analysis prove that CPU utilization is the most critical factor that affects power consumption, SQL energy consumption optimization can ignore the memory opti- mization and should balance two aspects: performance optimization and power consumption optimization, and the model and the proposed methods have ~ood a^Dlication value.
出处
《计算机科学》
CSCD
北大核心
2015年第10期202-207,231,共7页
Computer Science
基金
国家自然科学基金项目(61262088
60863003
61063042
61363004)
新疆维吾尔自治区自然科学基金项目(2011211A011)资助
关键词
绿色计算
SQL能耗优化
SQL能耗建模
查询处理
Keywords Green computing, SQL energy consumption optimization, SQL energy consumption modeling, Queryprocessing
作者简介
国冰磊(1991-),女,硕士生,CCF学生会员,主要研究方向为云计算、绿色计算,E-mail:xinggbl@163.com
于炯(1964-),男,博士,教授,博士生导师,主要研究方向为云计算与大数据
廖彬(1986-),男,博士,讲师,主要研究方向为数据库理论与技术、绿色计算、数据挖掘
杨德先(1991-),男,硕士生,主要研究方向为云计算、绿色计算。