Tamas Koszta

the issue is fixed with edge kernel, with armbian u-boot included in 26.2.1 speed is now at gigabit level # uname -r 6.19.0-edge-rockchip64 # grep -a --null-data U-Boot /dev/mtd0ro U-Boot SPL 2026.01_armbian-2026.01-S127a-Pc2e6-H706e-Vab81-B2eb2-R448a (Feb 10 2026 - 04:37:42 +0000) # iperf3 -R -c odroidm1.lan Connecting to host odroidm1.lan, port 5201 Reverse mode, remote host odroidm1.lan is sending [ 5] local 192.168.1.192 port 45834 connected to 192.168.1.195 port 5201 [ ID] Interval Transfer Bitrate [ 5] 0.00-1.00 sec 110 MBytes 919 Mbits/sec [ 5] 1.00-2.00 sec 110 MBytes 919 Mbits/sec [ 5] 2.00-3.00 sec 111 MBytes 928 Mbits/sec [ 5] 3.00-4.00 sec 110 MBytes 927 Mbits/sec [ 5] 4.00-5.00 sec 110 MBytes 922 Mbits/sec [ 5] 5.00-6.00 sec 110 MBytes 919 Mbits/sec [ 5] 6.00-7.00 sec 111 MBytes 928 Mbits/sec [ 5] 7.00-8.00 sec 110 MBytes 925 Mbits/sec [ 5] 8.00-9.00 sec 110 MBytes 925 Mbits/sec [ 5] 9.00-10.00 sec 110 MBytes 921 Mbits/sec - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 1.08 GBytes 926 Mbits/sec 110 sender [ 5] 0.00-10.00 sec 1.08 GBytes 923 Mbits/sec receiver

latest u-boot still suffers... ############################################### latest u-boot from https://github.com/inindev/uboot-rockchip/releases image: https://github.com/inindev/uboot-rockchip/releases/download/v2026.04/rk3568-odroid-m1.zip ################################################ # iperf3 -R -c odroidm1.lan Connecting to host odroidm1.lan, port 5201 Reverse mode, remote host odroidm1.lan is sending [ 5] local 192.168.1.192 port 51070 connected to 192.168.1.195 port 5201 [ ID] Interval Transfer Bitrate [ 5] 0.00-1.00 sec 0.00 Bytes 0.00 bits/sec [ 5] 1.00-2.00 sec 0.00 Bytes 0.00 bits/sec [ 5] 2.00-3.00 sec 128 KBytes 1.05 Mbits/sec [ 5] 3.00-4.00 sec 256 KBytes 2.10 Mbits/sec [ 5] 4.00-5.00 sec 0.00 Bytes 0.00 bits/sec [ 5] 5.00-6.00 sec 0.00 Bytes 0.00 bits/sec [ 5] 6.00-7.00 sec 256 KBytes 2.10 Mbits/sec [ 5] 7.00-8.00 sec 0.00 Bytes 0.00 bits/sec [ 5] 8.00-9.00 sec 128 KBytes 1.05 Mbits/sec [ 5] 9.00-10.00 sec 128 KBytes 1.05 Mbits/sec - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 1.00 MBytes 839 Kbits/sec 197 sender [ 5] 0.00-10.00 sec 896 KBytes 734 Kbits/sec receiver iperf Done. root@odroidm1:~# grep -a --null-data U-Boot /dev/mtd0ro U-Boot SPL 2026.04 (Apr 16 2026 - 23:02:37 +0000)

yes, it still exists unfortunately.... armbian-release: 26.2.1 # uname -r 6.18.10-current-rockchip64 # ethtool end0 Settings for end0: 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/Half 1000baseT/Full Link partner advertised pause frame use: No Link partner advertised auto-negotiation: Yes Link partner advertised FEC modes: Not reported Speed: 1000Mb/s Duplex: Full Auto-negotiation: on ############################################### u-boot included in armbian 26.2.1 ############################################### # dpkg -l linux-u-boot-odroidm1-current Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Architecture Description +++-=============================-============-============-================================= ii linux-u-boot-odroidm1-current 26.2.1 arm64 Das U-Boot for odroidm1 # grep -a --null-data U-Boot /dev/mtd0ro U-Boot SPL 2026.01_armbian-2026.01-S127a-Pc2e6-H706e-Vab81-B2eb2-R448a (Feb 10 2026 - 04:37:42 +0000) # iperf3 -R -c odroidm1.lan Connecting to host odroidm1.lan, port 5201 Reverse mode, remote host odroidm1.lan is sending [ 5] local 192.168.1.192 port 48096 connected to 192.168.1.195 port 5201 [ ID] Interval Transfer Bitrate [ 5] 0.00-1.00 sec 128 KBytes 1.05 Mbits/sec [ 5] 1.00-2.00 sec 128 KBytes 1.05 Mbits/sec [ 5] 2.00-3.00 sec 128 KBytes 1.05 Mbits/sec [ 5] 3.00-4.00 sec 0.00 Bytes 0.00 bits/sec [ 5] 4.00-5.00 sec 128 KBytes 1.05 Mbits/sec [ 5] 5.00-6.00 sec 0.00 Bytes 0.00 bits/sec [ 5] 6.00-7.00 sec 0.00 Bytes 0.00 bits/sec [ 5] 7.00-8.00 sec 256 KBytes 2.10 Mbits/sec [ 5] 8.00-9.00 sec 0.00 Bytes 0.00 bits/sec [ 5] 9.00-10.00 sec 0.00 Bytes 0.00 bits/sec - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 896 KBytes 734 Kbits/sec 157 sender [ 5] 0.00-10.00 sec 768 KBytes 629 Kbits/sec receiver ############################################### u-boot from https://github.com/inindev/odroid-m1/releases/download/v12.0 ################################################ # grep -a --null-data U-Boot /dev/mtd0ro U-Boot SPL 2023.07.02-00034-g2717ce87b0 (Aug 18 2023 - 09:35:34 +0000) # iperf3 -R -c odroidm1.lan Connecting to host odroidm1.lan, port 5201 Reverse mode, remote host odroidm1.lan is sending [ 5] local 192.168.1.192 port 43054 connected to 192.168.1.195 port 5201 [ ID] Interval Transfer Bitrate [ 5] 0.00-1.00 sec 110 MBytes 926 Mbits/sec [ 5] 1.00-2.00 sec 111 MBytes 929 Mbits/sec [ 5] 2.00-3.00 sec 110 MBytes 923 Mbits/sec [ 5] 3.00-4.00 sec 110 MBytes 920 Mbits/sec [ 5] 4.00-5.00 sec 111 MBytes 929 Mbits/sec [ 5] 5.00-6.00 sec 110 MBytes 923 Mbits/sec [ 5] 6.00-7.00 sec 110 MBytes 926 Mbits/sec ^C[ 5] 7.00-7.52 sec 58.1 MBytes 929 Mbits/sec - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate [ 5] 0.00-7.52 sec 0.00 Bytes 0.00 bits/sec sender [ 5] 0.00-7.52 sec 830 MBytes 925 Mbits/sec receiver iperf3: interrupt - the client has terminated

Still the same with armbian 25.2.3 kernel: 6.12.22-current-rockchip64 #1 SMP PREEMPT Mon Apr 7 08:08:37 UTC 2025 aarch64 aarch64 aarch64 GNU/Linux u-boot-version: # cat /dev/mtd/by-name/U-Boot | strings | grep -B1 "u-boot,version" 2025.01-armbian-2025.01-S6d41-P41ad-H4cab-V390e-Bb703-R448a u-boot,version WARNING: could not set u-boot,version %s. # iperf3 -R -c odroidm1 Connecting to host odroidm1, port 5201 Reverse mode, remote host odroidm1 is sending [ ID] Interval Transfer Bitrate [ 5] 0.00-1.00 sec 79.2 KBytes 649 Kbits/sec [ 5] 1.00-2.00 sec 84.8 KBytes 695 Kbits/sec [ 5] 2.00-3.00 sec 206 KBytes 1.69 Mbits/sec [ 5] 3.00-4.00 sec 228 KBytes 1.87 Mbits/sec [ 5] 4.00-5.00 sec 115 KBytes 938 Kbits/sec [ 5] 5.00-6.00 sec 181 KBytes 1.48 Mbits/sec [ 5] 6.00-7.00 sec 163 KBytes 1.33 Mbits/sec ^C[ 5] 7.00-7.36 sec 9.90 KBytes 226 Kbits/sec - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate [ 5] 0.00-7.36 sec 0.00 Bytes 0.00 bits/sec sender [ 5] 0.00-7.36 sec 1.04 MBytes 1.19 Mbits/sec receiver when changing u-boot back to older u-boot (same kernel), it works as expected # cat /dev/mtd/by-name/U-Boot | strings | grep -B1 "u-boot,version" 2023.04-00035-g7dd5eb0228 u-boot,version WARNING: could not set u-boot,version %s. # iperf3 -R -c odroidm1 Connecting to host odrdoidm1, port 5201 Reverse mode, remote host odroidm1 is sending [ ID] Interval Transfer Bitrate [ 5] 0.00-1.00 sec 110 MBytes 921 Mbits/sec [ 5] 1.00-2.00 sec 110 MBytes 926 Mbits/sec [ 5] 2.00-3.00 sec 110 MBytes 926 Mbits/sec [ 5] 3.00-4.00 sec 110 MBytes 921 Mbits/sec [ 5] 4.00-5.00 sec 111 MBytes 929 Mbits/sec [ 5] 5.00-6.00 sec 111 MBytes 927 Mbits/sec [ 5] 6.00-7.00 sec 110 MBytes 919 Mbits/sec ^C[ 5] 7.00-7.79 sec 87.0 MBytes 925 Mbits/sec - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate [ 5] 0.00-7.79 sec 0.00 Bytes 0.00 bits/sec sender [ 5] 0.00-7.79 sec 858 MBytes 924 Mbits/sec receiver iperf3: interrupt - the client has terminated ethtool output: ~# ethtool end0 Settings for end0: 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/Half 1000baseT/Full Link partner advertised pause frame use: No Link partner advertised auto-negotiation: Yes Link partner advertised FEC modes: Not reported Speed: 1000Mb/s Duplex: Full Auto-negotiation: on master-slave cfg: preferred slave master-slave status: slave Port: Twisted Pair PHYAD: 0 Transceiver: external MDI-X: Unknown Supports Wake-on: ug Wake-on: d Current message level: 0x0000003f (63) drv probe link timer ifdown ifup Link detected: yes

Hi, just installed 23.8.1 on my odroid M1, and I get poor network perf when using 1G port speed. iperf to another machine (iperf -c <server>, M1 sends traffic) gives the following: [ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 8.15 MBytes 6.84 Mbits/sec 631 sender [ 5] 0.00-10.04 sec 7.86 MBytes 6.57 Mbits/sec receiver reverse direction, M1 receives traffic: iperf -R -c <server> [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.04 sec 1.10 GBytes 937 Mbits/sec 587 sender [ 5] 0.00-10.00 sec 1.09 GBytes 938 Mbits/sec receiver same exists with older releases. also tried with older kernel (6.1.12-rk3568-odroid) when I set the network port on switch side to 100Mbps / full, then send, receive side is ok, can fill 100Mbps. Can you please help? BR, Tamas