On 05/25/2018 10:06 AM, Hojoon Yang via USRP-users wrote:
In addition, USRP X310 + 2 UBX-160 v2
-----------------------원본메일-----------------------
보낸사람 : Hojoon Yang via USRP-users <usrp-users@lists.ettus.com>
받는사람: usrp-users@lists.ettus.com
보낸날짜: 2018-05-25 20:59:17 GMT +0900 (Asia/Seoul)
제목: [USRP-users]timed stream in USRP X310 and B210
Hi,
I am currently using UHD 3.11.0.1 and I have two USRPs, B210 and X310.
while executing the tx_timed_samples in the example, the behavior
of the send() function was different between B210 and X310.
More specifically,
In B210, I do ./tx_timed_samples --rate 1e6 --secs 8 --nsamps
1000000 --args name=MyB210
The host does not send "whole samples" at the beginning, which
means that the send() got stuck when the buffer in the USRP is full.
When the times up, the USRP transmitted the samples and the send
function push the samples to the USRP again.
However, In X310, I did exact same command except the --args,
but the results are quite different. the send() is flushing "all
the samples" to the USRP at the beginning. I don't believe the
USRP X310 has a huge buffer to handle the 1,000,000 samples.
The USRP doesn't, but the operating system network stack does. The
buffer dynamics of USB vs the network interface are quite different.
Anyway the result is failed in X310 case. i.e. I got "Waiting for
async burst ACK... failed".
Could you try reverting to a 3.10 UHD, or the latest (3.12) ?
But in B210 I got success flag.
the X310 is connected to the host PC with 1G ethernet cable.
What did I wrong?
Regards,
Hojoon
_______________________________________________
USRP-users mailing list
USRP-users@lists.ettus.com
http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
_______________________________________________
USRP-users mailing list
USRP-users@lists.ettus.com
http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
