More info here.
http://lists.ettus.com/pipermail/usrp-users_lists.ettus.com/2019-January/058897.html
Ron
On 2/8/19 13:05, Ron Economos via USRP-users wrote:
See issue #222 (now closed) on the UHD Github for more info.
https://github.com/EttusResearch/uhd/issues/222
IMHO, this is equivalent of breaking userspace in Linux, and you know
how Linus feels about that!
Ron
On 2/8/19 12:52, Jason Roehm via USRP-users wrote:
Ron,
Can you elaborate on what the changes you referenced are and their
consequences? In my past experience, increasing the frame size has
been critical to achieving full-rate throughput on the B200 series.
Jason
On Feb 8, 2019, at 3:45 PM, Ron Economos via USRP-users
<usrp-users@lists.ettus.com <mailto:usrp-users@lists.ettus.com>> wrote:
The recv_frame_size behavior has been changed in UHD after
v3.13.0.3-rc1. If you want to experiment with large frame sizes, you
have to go back to v3.13.0.3-rc1 or before.
Ron
On 2/8/19 03:23, Krzysztof Wisniewski via USRP-users wrote:
Dear users,
I’m new to Ettus SDR therefor I might be missing some basic
knowledge. However I’ve read that in order to increase RX capture
performance I should fiddle with recv_frame_size
andnum_recv_frames. While increasing the latter parameter gives
good results, increasingrecv_frame_size gives me
ERROR_CODE_TIMEOUT. I’ve went through the UHD code and it seems
that my version of USRP should support values <n a range of
<40;16360>. Could someone explain why I’m getting those errors?
My UHD version:linux; GNU C++ version 7.3.0; Boost_106501;
UHD_3.14.0.HEAD-0-gd20a7ae2
I’m using*rx_to_file.py, this is the command I’m using:*
**
sudo nice -21 python*rx_to_file.py*--args recv_frame_size=8192,
num_recv_frames=256,serial=317B9F8 --output-file
/home/odroid/shared/rx_captured.txt --freq 2440e6 --rate=45e6
--duration 0.1
I’ve tried it on B205mini-I with the same result.
Regards,
Kris
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