8.2. File I/O Access Performance

Providing a common baseline for a consistent file access performance on the application private data storage (/data partition) allows app developers to set a proper expectation that would help their software design. Device implementations, depending on the device type, MAY have certain requirements described in section 2 for the following read and write operations:

• Sequential write performance. Measured by writing a 256MB file using 10MB write buffer.
• Random write performance. Measured by writing a 256MB file using 4KB write buffer.
• Sequential read performance. Measured by reading a 256MB file using 10MB write buffer.
• Random read performance. Measured by reading a 256MB file using 4KB write buffer.