Tests can be executed using iozone:
apt-get install iozone3
An example use of iozone:
iozone -e -a -s 4g -r 16M -i 0 -i 1
-s 4g - file size = 4GB
-r 16m - record size = 16MB (maximum)
-i 0 - write/rewrite test
-i 1 - read/reread test
In order to receive valid results (especially in read tests) file size needs to be big enough. For APU2 it was 4GB. This value can vary, depending on platform. It is related to system buffer.