Hi,
Currently, I connect my PC to N300 via X520 DA1 card with a SFP+ fiber adapter.
Both ends shows speed 10000Mbps.
But when I use Iperf3 to check, the bandwidth is just 173Mb/s.
On PC:
sudo ethtool enp3s0
[sudo] password for tma:
Settings for enp3s0:
Supported ports: [ FIBRE ]
Supported link modes: 10000baseT/Full
Supported pause frame use: Symmetric
Supports auto-negotiation: No
Supported FEC modes: Not reported
Advertised link modes: 10000baseT/Full
Advertised pause frame use: Symmetric
Advertised auto-negotiation: No
Advertised FEC modes: Not reported
Speed: 10000Mb/s
Duplex: Full
Port: FIBRE
PHYAD: 0
Transceiver: internal
Auto-negotiation: off
Supports Wake-on: umbg
Wake-on: g
Current message level: 0x00000007 (7)
drv probe link
Link detected: yes
On N300:
root@ni-n3xx-325A9D8:~# ethtool sfp1
Settings for sfp1:
Supported ports: [ ]
Supported link modes: 10000baseER/Full
Supported pause frame use: Symmetric Receive-only
Supports auto-negotiation: No
Supported FEC modes: Not reported
Advertised link modes: 10000baseER/Full
Advertised pause frame use: Symmetric Receive-only
Advertised auto-negotiation: No
Advertised FEC modes: Not reported
Speed: 10000Mb/s
Duplex: Full
Port: MII
PHYAD: 4
Transceiver: internal
Auto-negotiation: off
Link detected: yes
I tested with benchmark with command below. I don't know if this result is good
to run with gNB?
/usr/local/lib/uhd/examples/benchmark_rate --args
"type=n3xx,mgmt_addr=192.168.30.3,addr=192.168.20.2,master_clock_rate=125e6"
--duration 60 --channels "0" --rx_rate 122.07e6 --rx_subdev "A:0"
--tx_rate 122.07e6 --tx_subdev "A:0"
[INFO] [UHD] linux; GNU C++ version 7.5.0; Boost_106501;
UHD_4.2.0.HEAD-0-g46a70d85
[00:00:00.000140] Creating the usrp device with:
type=n3xx,mgmt_addr=192.168.30.3,addr=192.168.20.2,master_clock_rate=125e6...
[INFO] [MPMD] Initializing 1 device(s) in parallel with args:
mgmt_addr=192.168.30.3,type=n3xx,product=n300,serial=325A9D8,name=ni-n3xx-325A9D8,fpga=HG,claimed=False,addr=192.168.20.2,master_clock_rate=125e6
[INFO] [MPM.PeriphManager] init() called with device args
`fpga=HG,master_clock_rate=125e6,mgmt_addr=192.168.30.3,name=ni-n3xx-325A9D8,product=n300,clock_source=internal,time_source=internal'.
Using Device: Single USRP:
Device: N300-Series Device
Mboard 0: n300
RX Channel: 0
RX DSP: 0
RX Dboard: A
RX Subdev: Magnesium
TX Channel: 0
TX DSP: 0
TX Dboard: A
TX Subdev: Magnesium
[00:00:02.680810005] Setting device timestamp to 0...
[WARNING] [MULTI_USRP] Could not set RX rate to 122.070 MHz. Actual rate is
125.000 MHz
[WARNING] [MULTI_USRP] Could not set TX rate to 122.070 MHz. Actual rate is
125.000 MHz
[00:00:02.683219534] Testing receive rate 125.000000 Msps on 1 channels
Setting TX spp to 2000
[00:00:02.684711859] Testing transmit rate 125.000000 Msps on 1 channels
UU[00:01:02.686170124] Benchmark complete.
Benchmark rate summary:
Num received samples: 7499635293
Num dropped samples: 0
Num overruns detected: 0
Num transmitted samples: 7499530000
Num sequence errors (Tx): 0
Num sequence errors (Rx): 0
Num underruns detected: 2
Num late commands: 0
Num timeouts (Tx): 0
Num timeouts (Rx): 0
Done!
Thanks,
Trung.
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