摘要
基于Linux的移动智能终端普遍采用闪存设备作为存储装置,Linux内核通过Sysfs接口向用户空间提供存储IO相关的参数设置支持。文中针对移动终端系统存储IO需求,提出了存储IO调优方案,包括文件预读取、IO调度策略、EXT4文件系统3个方面的优化,并基于OMAP4平台环境进行测试。实验结果表明,本调优方法能显著提升系统存储IO的性能。
The mobile intelligent terminals based on Linux are commonly equipped with flash as storage devices,and Linux kernel provides system parameters which can be set to tune input and output of storage device in user space via Sysfs interface. This paper presents a practical scheme to optimize input and output of storage while analyzing the storage IO requirement of mobile terminal system. The scheme covers three aspects： Page Cache Pre-reading,IO scheduling strategy and EXT4 file system. Test on OMAP4 platform shows that the proposed scheme significantly improves the performance of storage IO.
出处
《电子科技》
2014年第11期52-55,共4页
Electronic Science and Technology
基金
国家核高基重大专项基金资助项目(2012ZX01039004)
