Hi,
I have an E320 device connected to the host with XG fiber connection and XG
FPGA loaded on the E320. UHD version is 4.3.0. I have set the mtu to 9000 on
both sides. Below you can find the configurations. I am trying to set spp to
1919 but I always get 492. I read in the documents that it depends on the mtu
and by default it is set to the maximum value possible based on mtu. Below
there is the result of benchmark rate as well.
host:$ sudo ethtool eno12399np0
Settings for eno12399np0:
Supported ports: [ FIBRE ]
Supported link modes: 1000baseT/Full
10000baseT/Full
Supported pause frame use: Symmetric Receive-only
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: 1000baseT/Full
10000baseT/Full
Advertised pause frame use: Symmetric
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Link partner advertised link modes: Not reported
Link partner advertised pause frame use: Symmetric
Link partner advertised auto-negotiation: No
Link partner advertised FEC modes: Not reported
Speed: 10000Mb/s
Duplex: Full
Port: Direct Attach Copper
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: g
Wake-on: d
Current message level: 0x00000000 (0)
Link detected: yes
host:$ ip -f inet addr show eno12399np0
263: eno12399np0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc mq state UP
group default qlen 1000
inet 10.40.2.1/16 brd 10.40.255.255 scope global eno12399np0
valid_lft forever preferred_lft forever
ni-e320-3238B97:~# ip -f inet addr show sfp0
15: sfp0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc pfifo_fast qlen 1000
inet 10.40.3.1/16 brd 10.40.255.255 scope global sfp0
valid_lft forever preferred_lft forever
host:$ ./benchmark_rate --args "addr=10.40.3.1,master_clock_rate=61.44e6"
--duration 60 --channels "0" --rx_rate 61.44e6 --rx_subdev "A:0" --tx_rate
61.44e6 --tx_subdev "A:0"
[INFO] [UHD] linux; GNU C++ version 9.4.0; Boost_107100;
UHD_4.3.0.HEAD-0-g1f8fd345
[00:00:00.000070] Creating the usrp device with:
addr=10.40.3.1,master_clock_rate=61.44e6...
[INFO] [MPMD] Initializing 1 device(s) in parallel with args:
mgmt_addr=10.40.3.1,type=e3xx,product=e320,serial=3238B97,name=ni-e320-3238B97,fpga=XG,claimed=False,addr=10.40.3.1,master_clock_rate=61.44e6
[INFO] [MPM.PeriphManager] init() called with device args
`fpga=XG,master_clock_rate=61.44e6,mgmt_addr=10.40.3.1,name=ni-e320-3238B97,product=e320'.
[INFO] [0/Radio#0] Performing CODEC loopback test on channel 0 ...
[INFO] [0/Radio#0] CODEC loopback test passed
[INFO] [0/Radio#0] Performing CODEC loopback test on channel 1 ...
[INFO] [0/Radio#0] CODEC loopback test passed
[INFO] [0/DmaFIFO#0] BIST passed (Estimated Minimum Throughput: 1361 MB/s)
[INFO] [0/DmaFIFO#0] BIST passed (Estimated Minimum Throughput: 1361 MB/s)
Using Device: Single USRP:
Device: E300-Series Device
Mboard 0: e320
RX Channel: 0
RX DSP: 0
RX Dboard: A
RX Subdev: E3xx
TX Channel: 0
TX DSP: 0
TX Dboard: A
TX Subdev: E3xx
[00:00:04.923395067] Setting device timestamp to 0...
Setting TX spp to 492
[00:00:04.935123785] Testing receive rate 61.440000 Msps on 1 channels
[00:00:04.977439269] Testing transmit rate 61.440000 Msps on 1 channels
UUUU[00:01:04.979477903] Benchmark complete.
Benchmark rate summary:
Num received samples: 3686373960
Num dropped samples: 0
Num overruns detected: 0
Num transmitted samples: 3686410860
Num sequence errors (Tx): 0
Num sequence errors (Rx): 0
Num underruns detected: 4
Num late commands: 0
Num timeouts (Tx): 0
Num timeouts (Rx): 0
Done
As you can see TX spp is set to 492. But I want 1919 with 9000 mtu. Is there
anything I am missing here?
Best,
Samie
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