2021-01-31 07:12 PM
I got my STM32MP157A-DK1 load STM32MP15-Ecosystem-v2.1.0/Starter-Package
Using iPerf3 for UDP speed test, but only achieved around 345Mbps.
Made sure the cable, labtop NIC, switch are compatible with Gigabit.
Attching board eth0 config
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supported pause frame use: Symmetric Receive-only
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised pause frame use: Symmetric Receive-only
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Link partner advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Link partner advertised pause frame use: Symmetric
Link partner advertised auto-negotiation: Yes
Link partner advertised FEC modes: Not reported
Speed: 1000Mb/s
Duplex: Full
Port: MII
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: ug
Wake-on: d
Current message level: 0x0000003f (63)
drv probe link timer ifdown ifup
Link detected: yes
Attaching iperf3 test result
./iperf3 -c 10.0.0.169 -u -b 1G
Connecting to host 10.0.0.169, port 5201
[ 4] local 10.0.0.5 port 51001 connected to 10.0.0.169 port 5201
[ ID] Interval Transfer Bandwidth Total Datagrams
[ 4] 0.00-1.00 sec 38.3 MBytes 321 Mbits/sec 4897
[ 4] 1.00-2.00 sec 40.8 MBytes 342 Mbits/sec 5225
[ 4] 2.00-3.00 sec 42.4 MBytes 355 Mbits/sec 5421
[ 4] 3.00-4.00 sec 41.1 MBytes 344 Mbits/sec 5255
[ 4] 4.00-5.00 sec 42.0 MBytes 352 Mbits/sec 5375
[ 4] 5.00-6.00 sec 41.2 MBytes 346 Mbits/sec 5279
[ 4] 6.00-7.00 sec 41.8 MBytes 351 Mbits/sec 5350
[ 4] 7.00-8.00 sec 41.3 MBytes 346 Mbits/sec 5283
[ 4] 8.00-9.00 sec 42.0 MBytes 353 Mbits/sec 5375
[ 4] 9.00-10.00 sec 40.8 MBytes 342 Mbits/sec 5226
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams
[ 4] 0.00-10.00 sec 412 MBytes 345 Mbits/sec 0.204 ms 1805/52659 (3.4%)
[ 4] Sent 52659 datagrams
Please contribute you ideas on what am I missing? what else can I further do?
2021-02-05 06:04 AM
Hello,
We did check the tests performed on V2.1.0. And the performances were very good on MP157f DK2 (so near 950 MB).
1/ MP157f is 800Mhz and dual cpu, so this can explain the diff. You can check adding "-V" option in Iperf3 the cpu load used (even if sometimes the value in not correct).
2/ Our tests are performed on a private LAN with only 2 boards inside the gateway LAN (one for Ref and the tested board). This can also influence the results.
3/ Iperf3 versions need to be the same or very close between the server and client (we have also seen big diff around this).
4/ With net data server, you can easily double check the iperf3 output data: see https://wiki.st.com/stm32mpu/wiki/Netdata.
2021-02-19 06:43 AM
Coming back to this subject. The picture is not so easy to get and we can see a regression between kernel 4.9 (V1.x.y) and 5.10 (V3.x.y) with same setup.
Analysis is ongoing. The issue is not related to cpu bandwidth (no limitation seen on MP157F ).
2021-02-19 06:45 AM
I mean 4.9 and 5.10 is ok but 5.4 is below 400 Mbits/sec.