Hi Marcus,
Thanks for your reply.The original ring buffer is 1024 for Tx and Rx. Now I
have changed them to 4096. Still see overruns and underruns.Ring parameters for
enp59s0f0np0:Pre-set maximums:RX: 8192RX Mini: n/aRX Jumbo:
n/aTX: 8192Current hardware settings:RX: 4096RX
Mini: n/aRX Jumbo: n/aTX: 4096
Ring parameters for enp59s0f1np1:Pre-set maximums:RX: 8192RX Mini:
n/aRX Jumbo: n/aTX: 8192Current hardware settings:RX:
4096RX Mini: n/aRX Jumbo: n/aTX: 4096
Benchmark rate summary: Num received samples: 12617833512 Num dropped
samples: 17321163392 Num overruns detected: 112 Num transmitted
samples: 9159225280 Num sequence errors (Tx): 0 Num sequence errors (Rx): 0
Num underruns detected: 856834 Num late commands: 0 Num timeouts
(Tx): 0 Num timeouts (Rx): 0
I think my computer is not fast enough for 500MHz sampling rate. The computer I
am using is Dell PowerEdge R740, CPU is Intel(R) Xeon(R) Bronze 3106 CPU @
1.70GHz
What is the recommended computer HW configuration?
Another question is UHD4.5. I tried UHD4.5, but there was MPM issueThe MPM
software on your device is older than the FPGA you're trying to
use. Because you're using master, they haven't published updated
filesystems with the new MPM yet, but there will be a release candidate
very soon for UHD 4.5 you could try.
So, I have to use UHD4.4 now.
Kind regards,Hongwei
On Monday, 11 September 2023 at 22:15:21 BST, Marcus D. Leech
<patchvonbr...@gmail.com> wrote:
On 11/09/2023 12:09, zhou via USRP-users wrote:
Hi all,
I just set up a system with X410 USRP. Tried to run a benchmark rate test and
saw a lot of errors. Please suggest what could be the reason for the test
failure. Host is R740 (16 CPU cores) and Linux is Ubuntu 22.04 with
low-latency kernel. 100G Mellanox ConnectX-6 NIC cards
$ sudo /usr/local/lib/uhd/examples/benchmark_rate \
--args"type=x4xx,mgmt_addr=192.168.88.2,addr=192.168.20.2,master_clock_rate=500e6"
\ --priority "high" \ --multi_streamer \ --duration 60 \ --channels "0" \
--rx_rate 10e6 \ --rx_subdev "A:0" \ --tx_rate 10e6 \ --tx_subdev "A:0" [sudo]
password for user:
[INFO] [UHD] linux; GNU C++ version 11.4.0; Boost_107400; DPDK_21.11;
UHD_4.4.0.HEAD-0-g5fac246b [00:00:00.000566] Creating the usrp device
with:type=x4xx,mgmt_addr=192.168.88.2,addr=192.168.20.2,master_clock_rate=500e6...
[INFO] [MPMD] Initializing 1 device(s) in parallel with
args:mgmt_addr=192.168.88.2,type=x4xx,product=x410,serial=3289B23,name=ni-x4xx-3289B23,fpga=CG_400,claimed=False,addr=192.168.20.2,master_clock_rate=500e6
[WARNING] [MPM.RPCServer] A timeout event occured! [INFO] [MPM.PeriphManager]
init() called with device
args`fpga=CG_400,master_clock_rate=500e6,mgmt_addr=192.168.88.2,name=ni-x4xx-3289B23,product=x410,clock_source=internal,time_source=internal'.
Using Device: Single USRP: Device: X400-Series Device Mboard 0: x410 RX
Channel: 0 RX DSP: n/a RX Dboard: A RX Subdev: 0 TX Channel: 0
TX DSP: n/a TX Dboard: A TX Subdev: 0
[00:00:05.797505591] Setting device timestamp to 0... [WARNING] [0/Radio#0]
Requesting invalid sampling rate from device: 10 MHz. Actual rate is: 500 MHz.
[WARNING] [MULTI_USRP] Could not set RX rate to 10.000 MHz. Actual rate is
500.000 MHz [WARNING] [0/Radio#0] Requesting invalid sampling rate from device:
10 MHz. Actual rate is: 500 MHz. [WARNING] [MULTI_USRP] Could not set TX rate
to 10.000 MHz. Actual rate is 500.000 MHz Setting TX spb to 1984
[00:00:05.799789467] Testing receive rate 500.000000 Msps on 1 channels
[00:00:05.801875415] Testing transmit rate 500.000000 Msps on 1 channels
UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUD[U00:00:06.33502762]
Detected Rx sequence error. UU[D00:00:06.33952517] Detected Rx sequence error.
UUUU[D00:00:06.34387503] Detected Rx sequence error. U[D00:00:06.34802030]
Detected Rx sequence error. UUUUU[D00:00:06.35212894] Detected Rx sequence
error. U[D00:00:06.35640910] Detected Rx sequence error.
Benchmark rate summary: Num received samples: 0 Num dropped
samples: 0 Num overruns detected: 596 Num transmitted samples:
10046501824 Num sequence errors (Tx): 0 Num sequence errors (Rx): 0 Num
underruns detected: 819855 Num late commands: 0 Num timeouts (Tx):
0 Num timeouts (Rx): 0
Done!
$ ifconfig enp59s0f0np0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu
9000 inet 192.168.20.1 netmask 255.255.255.0 broadcast 192.168.20.255
inet6 fe80::ba3f:d2ff:fe57:b77a prefixlen 64 scopeid 0x20<link>
ether b8:3f:d2:57:b7:7a txqueuelen 1000 (Ethernet) RX packets
15144837 bytes 101888797100 (101.8 GB) RX errors 0 dropped 2423
overruns 0 frame 0 TX packets 12311297 bytes 87947193629 (87.9 GB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
enp59s0f1np1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000
inet 192.168.10.1 netmask 255.255.255.0 broadcast 192.168.10.255
inet6 fe80::ba3f:d2ff:fe57:b77b prefixlen 64 scopeid 0x20<link> ether
b8:3f:d2:57:b7:7b txqueuelen 1000 (Ethernet) RX packets 406107 bytes
2296309836 (2.2 GB) RX errors 0 dropped 0 overruns 0 frame 0
TX packets 502690 bytes 3421432091 (3.4 GB) TX errors 0 dropped 0
overruns 0 carrier 0 collisions 0
Kind regards, Hongwei
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The fact that the actual IP interface is seeing dropped frames indicates that
likely the ringbuf pool on that NIC is too small.
Check out the support that ethtool has for this:
https://www.24x7serversupport.com/blog/how-to-tuneup-tx-and-rx-buffers-on-network-interface/
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