Low SATA drive speed

[johnabel]

I'm using a SATA SSD drive connected to the TE0803 PS. I built linux based on the StarterKit image. I needed some changes in the rootfs like adding hdparm and mkfs.ext4.
The thing works except for the read/write speed that is far below the stated in the SSD datasheet (560/ 440 MB/s). I'm not even getting half of that which I think it's an indication that something is missing somewhere. I'm not asking for the very top, I just need an average of 250 MB/s over 5 minutes that I think it should be perfectly possible (?)

[JH]

Hi,
SATA is realised over GTR, performace depends on PS setup  and Xilinx drivers. We did not configure for fast speed on our reference design.
See also:
https://www.xilinx.com/support/documentation/user_guides/ug1085-zynq-ultrascale-trm.pdf
--> page 903 chapter 32 ff and page 913 (Sata clocking and reset for AXI interface CLK)
https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/18842339/SATA
https://www.xilinx.com/support/answers/68663.html
https://www.xilinx.com/support/answers/71584.html

br
John

Maybe you should also


br
John