Dear Friends,

We are planning to go with AT91SAM9M10 on one of our embedded product that mainly uses USB interface to transfer data. I have bought AT91SAM9M10-G45-EK kit to evaluate the USB speed and I found very disappointing results. Can anyone please share their thoughts on the method used to evaluate the USB speed or how to evaluate the issue?
Below are the tests:
1) Copying demo board manual from USB stick to Nand Flash(location: /usr/tmp/) File size: 2.2 MB:

root@at91sam9m10g45ek:/usr/tmp# time cp /media/sda1/Manual_demo_board.pdf .
real 0m 5.73s
user 0m 0.00s
sys 0m 2.66s

2) Copying same Manual_demo_board.pdf file from /usr/tmp directory back to USB stick with enough free space. It is very slow that I have to do Ctrl-C to stop the copy process.

root@at91sam9m10g45ek:/usr/tmp# time cp Manual_demo_board.pdf /media/sda1/test_b
oard.pdf
Command terminated by signal 2
real 2m 45.77s
user 0m 0.01s
sys 0m 0.28s

Why its very slow while copy from Nand to USB? As per our requirement, we have to copy the data files from Nand to USB and the speed is not acceptable.

Have a Good Day,
Thank you,
Ankur.