On 25/03/2024 10:05, DOR-ISAAC SHABTAY wrote:
Hi,
I'm using usrp N321 to sample data at IQ rate of 250 MSPS.
I have dropped packets.
________________________________________________________________________
sync; sudo nice -n -20 /usr/lib/uhd/examples/rx_samples_to_file --freq
1e9 --rate 250e6 --file /media/data/data10.dat --args "addr=192.168.10.2"
Creating the usrp device with: addr=192.168.10.2...
[INFO] [UHD] linux; GNU C++ version 11.4.0; Boost_107400;
UHD_4.6.0.0-0ubuntu1~jammy1
[INFO] [MPMD] Initializing 1 device(s) in parallel with args:
mgmt_addr=192.168.10.2,type=n3xx,product=n320,serial=32AC3CE,name=ni-n3xx-32AC3CE,fpga=XG,claimed=False,addr=192.168.10.2
[INFO] [MPM.PeriphManager] init() called with device args
`fpga=XG,mgmt_addr=192.168.10.2,name=ni-n3xx-32AC3CE,product=n320,clock_source=internal,time_source=internal'.
Using Device: Single USRP:
Device: N300-Series Device
Mboard 0: n320
RX Channel: 0
RX DSP: 0
RX Dboard: A
RX Subdev: Rhodium
RX Channel: 1
RX DSP: 1
RX Dboard: B
RX Subdev: Rhodium
TX Channel: 0
TX DSP: 0
TX Dboard: A
TX Subdev: Rhodium
TX Channel: 1
TX DSP: 1
TX Dboard: B
TX Subdev: Rhodium
Setting RX Rate: 250.000000 Msps...
Actual RX Rate: 245.760000 Msps...
Setting RX Freq: 1000.000000 MHz...
Setting RX LO Offset: 0.000000 MHz...
[WARNING] [MULTI_USRP] Could not set RX rate to 250.000 MHz. Actual
rate is 245.760 MHz
[WARNING] [MULTI_USRP] Could not set RX rate to 250.000 MHz. Actual
rate is 245.760 MHz
Actual RX Freq: 1000.000000 MHz...
[INFO] [MPM.Rhodium-0] init() called with args
`fpga=XG,mgmt_addr=192.168.10.2,name=ni-n3xx-32AC3CE,product=n320,clock_source=internal,time_source=internal'
[INFO] [MPM.Rhodium-1] init() called with args
`fpga=XG,mgmt_addr=192.168.10.2,name=ni-n3xx-32AC3CE,product=n320,clock_source=internal,time_source=internal'
Locking LO on channel 0
Waiting for "lo_locked": ++++++++++ locked.
Press Ctrl + C to stop streaming...
Disk write test indicates that an overflow is likely to occur.
Your write medium must sustain a rate of 983.040MB/s,
but write test returned write speed of 346.000MB/s.
The disk write rate is also affected by system load
and OS/disk caching capacity.
OGot an overflow indication. Please consider the following:
Your write medium must sustain a rate of 983.040MB/s.
Dropped samples will not be written to the file.
Please modify this example for your purposes.
This message will not appear again.
ODDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDODDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDODDDDDDDDDDDDDDDDOODDDDDDDDDDDDDDDDDDDDDDDDODDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDO^C
Done!
_________________________________________________________________________
Host PC: Intel NUC - NUC11TNHi7
Ubuntu 22.04
Linux kernel version - 6.5.0
we have separate HDs for OS (SATA 2.5'') and storage (fast SSD NVME)
we are using QNA-T310G1S as adapter SFP <--> Thunderbolt.
we tried the following (from
https://kb.ettus.com/USRP_Host_Performance_Tuning_Tips_and_Tricks
<https://kb.ettus.com/USRP_Host_Performance_Tuning_Tips_and_Tricks> and
https://kb.ettus.com/Getting_Started_with_DPDK_and_UHD
<https://kb.ettus.com/Getting_Started_with_DPDK_and_UHD>):
* CPU Governor (CPU governor to |performance| for all cores)
* Adjust Network Buffers
* Adjust Ethernet MTU (the MTU is 9000)
* Increasing Ring Buffers
* Increasing num_recv_frames (num_recv_frames=512)
* Extra nice Priority (sudo nice -n -20)
Can we use dpdk with QNAP? what is the 'dpdk_mac' than?
Thanks,
David Stanley
This message (including any attachments) issued by RAFAEL- ADVANCED
DEFENSE SYSTEMS LTD. (hereinafter "RAFAEL") contains confidential
information intended for a specific individual and purpose, may
constitute information that is privileged or confidential or otherwise
protected from disclosure. If you are not the intended recipient, you
should contact us immediately and thereafter delete this message from
your system. You are hereby notified that any disclosure, copying,
dissemination, distribution or forwarding of this message, or the
taking of any action based on it, is strictly prohibited. If you have
received this e-mail in error, please notify us immediately by e-mail
mailto:law...@rafael.co.il and completely delete or destroy any and
all electronic or other copies of the original message and any
attachments thereof..
_______________________________________________
USRP-users mailing list --usrp-users@lists.ettus.com
To unsubscribe send an email tousrp-users-le...@lists.ettus.com
If you specify a "--file /dev/null" is it able to keep up?
250Msps and 8 bytes per sample written to the file is a LOT of data, and
even with a fast SSD your system may not be able to
keep up.
Although, the 'D' suggests that your network interface is dropping
frames. It's unlikely that it is supported by DPDK.
_______________________________________________
USRP-users mailing list -- usrp-users@lists.ettus.com
To unsubscribe send an email to usrp-users-le...@lists.ettus.com
