Abstract:

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.

Key words: mobile intelligent terminal, storage io, performance tuning, IO scheduling, EXT4