AnsweredAssumed Answered

iMX6Q SATA performance (speed limit)

Question asked by Androider on Jun 30, 2014
Latest reply on Jun 8, 2015 by Tony Zheng

Hi all,

 

I've been testing the VAR-SOM-MX6 dev kit, and have noticed that the SATA write speed is well below what I would expect.

 

Both using a custom app and dding zeros to 2 separate SSD drives, I'm maxing out at around 96MB/s, less than a third of the rated speed of a SATA II interface.

 

Is there anything I'm missing here? I've looked through the IMX6DQAEC datasheet, and can't find anything about the read/write speed being less that 3.0 gbps. Could it be a limitation of the dev kit? Could anyone point me in the direction of the driver?

 

The SSDs I'm using are a 1tb Crucial M550 and a 120gb Kingston HyperX, and I'm running the Linaro Ubuntu 11.10 distro from the Variscite Wiki.

 

Thanks in advance.

Outcomes