T5000+Jetpack7.2，25G带宽tcp17.2Gbps，udp21.98Gbps

[hyla_huang1]

硬件：T5000 + 自研载板，两块板子对连

软件：Jetpack7.2 + 定制内核

25Gx4：使能25G和带宽测试方法，遵循官网文档 Enable 25 Gigabit Ethernet on QSFP Port — NVIDIA Jetson Linux Developer Guide 唯一不同之处是测试时仅使用一个25G

测试结果：发送带宽偏低，tcp 17.2Gbps，udp 21.98Gbps。请问还有哪些因素可以优化？谢谢！

vivibit@M114:~/init$ ./iperf3_tx.sh -b 0 -P 24 | grep send | grep SUM
[SUM] 0.00-10.00 sec 2.50 GBytes 2.15 Gbits/sec 6 sender
[SUM] 0.00-10.00 sec 2.49 GBytes 2.14 Gbits/sec 5 sender
[SUM] 0.00-10.00 sec 2.50 GBytes 2.15 Gbits/sec 0 sender
[SUM] 0.00-10.00 sec 2.49 GBytes 2.14 Gbits/sec 23 sender
[SUM] 0.00-10.00 sec 2.50 GBytes 2.15 Gbits/sec 2 sender
[SUM] 0.00-10.00 sec 2.44 GBytes 2.10 Gbits/sec 2 sender
[SUM] 0.00-10.01 sec 2.50 GBytes 2.14 Gbits/sec 9 sender
[SUM] 0.00-10.01 sec 2.49 GBytes 2.14 Gbits/sec 4 sender

vivibit@M114:~/init$ ./iperf3_tx.sh -u -b 0 -P 24 | grep send | grep SUM
[SUM] 0.00-10.00 sec 3.20 GBytes 2.75 Gbits/sec 0.000 ms 0/385589 (0%) sender
[SUM] 0.00-10.00 sec 3.19 GBytes 2.74 Gbits/sec 0.000 ms 0/384685 (0%) sender
[SUM] 0.00-10.00 sec 3.20 GBytes 2.75 Gbits/sec 0.000 ms 0/385518 (0%) sender
[SUM] 0.00-10.00 sec 3.20 GBytes 2.75 Gbits/sec 0.000 ms 0/385089 (0%) sender
[SUM] 0.00-10.00 sec 3.20 GBytes 2.75 Gbits/sec 0.000 ms 0/385780 (0%) sender
[SUM] 0.00-10.00 sec 3.18 GBytes 2.74 Gbits/sec 0.000 ms 0/383653 (0%) sender
[SUM] 0.00-10.00 sec 3.19 GBytes 2.74 Gbits/sec 0.000 ms 0/384523 (0%) sender
[SUM] 0.00-10.00 sec 3.21 GBytes 2.76 Gbits/sec 0.000 ms 0/386683 (0%) sender

[kayccc]

MGBE on the Jetson AGX Thor developer kit shows lower performance on the 25G interface is the known issue and addressed on the JP7.2 release notes, we’re still improving it.

[hyla_huang1]

我用的就是Jetpack7.2版本。

看到文档中的测试数据已经接近25Gx4的极限了，udp 103.18Gbps，tcp 93.06Gbps， Enable 25 Gigabit Ethernet on QSFP Port — NVIDIA Jetson Linux Developer Guide

[kayccc]

We will improve it at the coming JetPack release.