基于嵌入式Linux系统的Qt Quick应用启动优化  

Optimization on boot time of Qt Quick application based on embedded Linux

作　　者：蒋琳娇[1] 刘淼 金星[1,2] 

机构地区：[1]中国科学院上海微系统与信息技术研究所,上海200050 [2]浙江中科领航汽车电子有限公司,浙江杭州311228

出　　处：《电子设计工程》2015年第7期151-154,158,共5页Electronic Design Engineering

基　　金：国家自然科学基金项目(51105012)

摘　　要：启动时间对于嵌入式系统,尤其是图形交互界面的用户体验至关重要。为了缩短启动时间,本文通过标记串口打印信息的时间,对基于嵌入式Linux系统的Qt Quick应用程序启动时间进行分析和比较。针对主要的延时因素,从bootloader、内核加载、Qt Quick程序3个方面分别对嵌入式系统的启动过程提出了常规启动优化方案。实验结果表明,该方案缩短了73%的启动时间,优化效果显著。Boot time of embedded system, especially the graphical interface, is very important to user experience. By marking the time of information printed by serial port, startup time of Qt Quick application based on embedded Linux is analyzed and compared. According to the main factors, optimization on reducing boot time of embedded system is put forward in three aspects of bootloader, kernel booting and Qt Quick program. The experimental results prove this scheme, shortening 73% of boot time, has a remarkable effect on optimization of boot time.

关 键 词：启动时间 图形交互界面 嵌入式LINUX QT Quick 

分 类 号：TP31[自动化与计算机技术—计算机软件与理论]