1 ## 8.2\. File I/O Access Performance 2 3 Providing a common baseline for a consistent file access performance on the 4 application private data storage (`/data` partition) allows app developers 5 to set a proper expectation that would help their software design. Device 6 implementations, depending on the device type, MAY have certain requirements 7 described in [section 2](#2_device-type) for the following read 8 and write operations: 9 10 * **Sequential write performance**. Measured by writing a 256MB file using 11 10MB write buffer. 12 * **Random write performance**. Measured by writing a 256MB file using 4KB 13 write buffer. 14 * **Sequential read performance**. Measured by reading a 256MB file using 15 10MB write buffer. 16 * **Random read performance**. Measured by reading a 256MB file using 4KB 17 write buffer. 18 19
