[USRP-users] benchmark_rate test

Michael West michael.west at ettus.com
Fri Oct 23 13:01:04 EDT 2015

A few more things:

1)  Make sure you have a direct connection between the host computer and
the X310.  Some switches may not work well.
2)  Make sure your CPU governor is set to "performance" (Linux) or all
power management is disabled (Windows).
3)  Make sure you are not using the Intel Corporation 82579LM Ethernet
Controller.  It has known issues dropping UDP packets.
4)  Use a native OS.  Virtual machines can have issues with I/O.


On Fri, Oct 23, 2015 at 2:50 AM, Marcus Müller <usrp-users at lists.ettus.com>

> Hello John,
> what is your connection to the USRP? 1Gigabit Ethernet, 10Gigabit Ethernet
> or PCIexpress? What Operating Sytem are you running, and which version of
> UHD?
> Generally, this rather unusual; my first bet would be your network
> hardware. What is (/are) the network cards you use to connect to the USRP?
> Best regards,
> Marcus
> On 23.10.2015 08:21, john liu via USRP-users wrote:
> Dear all,
>            We take the benchmark_rate program which under uhd folder ,to
> test the communication rate of USRP N210  and computer. When we set the
> sampling rate of 5M, there was the word "D", which  means packet loss. We
> replaced the X310 USRP, the situation is the same. then we changed the PC,
> but still appeared "D".
> thank you for your help.
> best regards
> John
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