On 22/02/2017 18:16, Giordon Stark wrote:
Hi Matteo,
I'd like to (and more generally) benchmark various features of the
ZCU102 evaluation board. Right now, I've used meta-xilinx to compile an
OS that has python. It would be great to figure out how to measure the
AXI bus speed (such as using DMA) by running a script on the OS. It's
not clear to me where to start or if the default image for the
evaluation board will let me do this (I believe it has the necessary
drivers).
Giordon
On Wed, Feb 22, 2017 at 12:04 PM Matteo Vit
<[email protected]
<mailto:[email protected]>> wrote:
On 21/02/2017 20:07, Giordon Stark wrote:
> Hi,
>
> If we load up an embedded OS on a Zynq board (eg: an evaluation
board),
> what's the best way to benchmark the AXI bus speeds and bandwidth, eg:
> with a compiled C++ program?
>
> Giordon
>
>
Hi Giordon,
if you mean how to measure the AXI bus speed you can use the IP block
AXI performance monitor (from Xilinx).
If you want to know how to generate traffic on the bus, it depends on
what you have connected to the AXI bus.
Can you please provide more details about what you'd like to achieve?
Regards,
Matteo
Hi Giordon,
I have found this interesting presentation from Xilinx about DMA control
from user space:
https://forums.xilinx.com/xlnx/attachments/xlnx/ELINUX/10693/1/Linux%20DMA%20from%20User%20Space-public.pdf
I think this plus the AXI performance monitor is a good starting point.
Regards,
Matteo
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