openwrt / openwrt/openwrt

25.12 on BPI-R4 - Poor performance on fiber link

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bug Official Image release/25.12 target/mediatek
Dominant language
C
Stars
28.5k
Forks
13k
PR merge metrics
PR metrics pending

Description

Describe the bug

I have a 10 Gb fiber link between my PC and the openwrt router (sfp+ Ubiquiti UniFi SFP+ Multimode Transceiver UF-MM-10G on both side)

OpenWrt version

r32673-482ba7230a

OpenWrt release

25.12.0-rc5

OpenWrt target/subtarget

mediatek/filogic

Device

Banana Pi BPI-R4 (2x SFP+)

Image kind

Official downloaded image

Steps to reproduce

iperf3 -s on openwrt
iperf3 -c 192.168.0.1 on my PC (192.168.0.190)

Actual behaviour
Image
Expected behaviour

Throughput closer to 10 Gbps

Additional info

No response

Diffconfig

Terms
  • I am reporting an issue for OpenWrt, not an unsupported fork.

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the reported iperf3 server/client test on the Banana Pi BPI-R4 running OpenWrt 25.12.0-rc5 for mediatek/filogic, then compare the fiber-link throughput with the expected 10 Gbps. No source files or tests are identified, so completion would require isolating the networking cause and documenting a verified improvement.

Written by the indexing model from the issue text.

Assessment

Domain
embedded-iot, networking, performance
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
35/100

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