January 13, 20242 yr Hello! I have detected that the download speed of my network card has been limited to 20MB/s, when normally it should be 100MB/s. I detected it when I had Unraid 6.12.5 and decided to upgrade to Unraid 6.12.6, however I detected this in patch note: Release-notes/6.12.6 "Problems due to Realtek network cards Stock Realtek drivers in the latest Linux kernels are causing network and stability issues. If you are having issues and Tools > System Devices shows that you have a Realtek ethernet controller, grab the part number shown and search Community Apps to see if there is a Realtek driver plugin for that device. For more information, see the support page for Realtek driver plugins." Things I've done to try to fix the problem: I have updated the version of Unraid from 6.12.5 to 6.12.6 I have changed the network cable with a new one. I have installed the "RTL8168(B)/RTL8111(B) PCI Drivers" (RTL8168 Drivers) plugin, as recommended in the patch notes. I have restarted my router, in case it is a related problem. My others computers can download at 100MB/s without problems. Unraid Version: 6.12.6 2023-12-01 NIC: root@Tower:~# lspci | grep -i Realtek 07:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15) Driver version: root@Tower:~# ethtool -i eth0 driver: r8168 version: 8.052.01-NAPI firmware-version: expansion-rom-version: bus-info: 0000:07:00.0 supports-statistics: yes supports-test: no supports-eeprom-access: no supports-register-dump: yes supports-priv-flags: no Network interface information: root@Tower:~# ethtool eth0 Settings for eth0: Supported ports: [ TP ] 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: No 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 Port: Twisted Pair PHYAD: 0 Transceiver: internal MDI-X: Unknown Supports Wake-on: pumbg Wake-on: g Current message level: 0x00000033 (51) drv probe ifdown ifup Link detected: yes Conclusion and hypothesis: I think we will all agree that it is a problem with the NIC driver. As I have checked on the official Realtek website, the latest published version is the one I already have installed: Unix (Linux) Description: GBE Ethernet LINUX driver r8168 for kernel up to 5.19 Version: 8.052.01 Update Time: 2023/09/28 Realtek PCIe FE / GBE / 2.5G / 5G Ethernet Family Controller Software My hypothesis is that there is a problem with the driver and they have not yet published a fix for it. Does it fit you? Anyone else in my situation? Thank you and best regards, ZanoX Edited January 13, 20242 yr by ZanoX
January 13, 20242 yr Community Expert Don't remember seeing any similar reports, I would recommend running a single stream iperf test in both directions.
January 13, 20242 yr Author 22 minutes ago, JorgeB said: Don't remember seeing any similar reports, I would recommend running a single stream iperf test in both directions. Hello JorgeB, Thank you very much for your prompt response. I attach the results that I have executed from the Unraid console itself: root@Tower:~# iperf3 -c 192.168.1.10 Connecting to host 192.168.1.10, port 5201 [ 5] local 192.168.1.10 port 51712 connected to 192.168.1.10 port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 5.40 GBytes 46.4 Gbits/sec 0 1023 KBytes [ 5] 1.00-2.00 sec 5.33 GBytes 45.8 Gbits/sec 0 895 KBytes [ 5] 2.00-3.00 sec 5.32 GBytes 45.7 Gbits/sec 0 895 KBytes [ 5] 3.00-4.00 sec 5.33 GBytes 45.8 Gbits/sec 0 895 KBytes [ 5] 4.00-5.00 sec 5.44 GBytes 46.7 Gbits/sec 0 895 KBytes [ 5] 5.00-6.00 sec 5.53 GBytes 47.5 Gbits/sec 0 895 KBytes [ 5] 6.00-7.00 sec 5.67 GBytes 48.7 Gbits/sec 0 895 KBytes [ 5] 7.00-8.00 sec 5.57 GBytes 47.8 Gbits/sec 0 895 KBytes [ 5] 8.00-9.00 sec 5.45 GBytes 46.8 Gbits/sec 0 1023 KBytes [ 5] 9.00-10.00 sec 5.44 GBytes 46.7 Gbits/sec 0 1023 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 54.5 GBytes 46.8 Gbits/sec 0 sender [ 5] 0.00-10.04 sec 54.5 GBytes 46.6 Gbits/sec receiver root@Tower:~# iperf3 -c 192.168.1.10 -R Connecting to host 192.168.1.10, port 5201 Reverse mode, remote host 192.168.1.10 is sending [ 5] local 192.168.1.10 port 51300 connected to 192.168.1.10 port 5201 [ ID] Interval Transfer Bitrate [ 5] 0.00-1.00 sec 5.36 GBytes 46.0 Gbits/sec [ 5] 1.00-2.00 sec 5.57 GBytes 47.8 Gbits/sec [ 5] 2.00-3.00 sec 5.54 GBytes 47.6 Gbits/sec [ 5] 3.00-4.00 sec 5.64 GBytes 48.4 Gbits/sec [ 5] 4.00-5.00 sec 5.56 GBytes 47.7 Gbits/sec [ 5] 5.00-6.00 sec 5.50 GBytes 47.2 Gbits/sec [ 5] 6.00-7.00 sec 5.28 GBytes 45.3 Gbits/sec [ 5] 7.00-8.00 sec 5.56 GBytes 47.7 Gbits/sec [ 5] 8.00-9.00 sec 5.71 GBytes 49.1 Gbits/sec [ 5] 9.00-10.00 sec 5.71 GBytes 49.0 Gbits/sec - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.04 sec 55.4 GBytes 47.4 Gbits/sec 0 sender [ 5] 0.00-10.00 sec 55.4 GBytes 47.6 Gbits/sec receiver I hope it helps identify the problem. Regards Edited January 13, 20242 yr by ZanoX
January 13, 20242 yr Author I attach results of another test carried out from another computer (Windows) towards Unraid: PS C:\iperf3> .\iperf3.exe -c 192.168.1.10 Connecting to host 192.168.1.10, port 5201 [ 4] local 192.168.1.13 port 55704 connected to 192.168.1.10 port 5201 [ ID] Interval Transfer Bandwidth [ 4] 0.00-1.00 sec 112 MBytes 938 Mbits/sec [ 4] 1.00-2.00 sec 113 MBytes 948 Mbits/sec [ 4] 2.00-3.00 sec 113 MBytes 948 Mbits/sec [ 4] 3.00-4.00 sec 112 MBytes 941 Mbits/sec [ 4] 4.00-5.00 sec 113 MBytes 949 Mbits/sec [ 4] 5.00-6.00 sec 113 MBytes 949 Mbits/sec [ 4] 6.00-7.00 sec 113 MBytes 947 Mbits/sec [ 4] 7.00-8.00 sec 113 MBytes 949 Mbits/sec [ 4] 8.00-9.00 sec 113 MBytes 947 Mbits/sec [ 4] 9.00-10.00 sec 113 MBytes 948 Mbits/sec - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth [ 4] 0.00-10.00 sec 1.10 GBytes 946 Mbits/sec sender [ 4] 0.00-10.00 sec 1.10 GBytes 946 Mbits/sec receiver PS C:\iperf3> .\iperf3.exe -c 192.168.1.10 -R Connecting to host 192.168.1.10, port 5201 Reverse mode, remote host 192.168.1.10 is sending [ 4] local 192.168.1.13 port 55723 connected to 192.168.1.10 port 5201 [ ID] Interval Transfer Bandwidth [ 4] 0.00-1.00 sec 104 MBytes 876 Mbits/sec [ 4] 1.00-2.00 sec 105 MBytes 881 Mbits/sec [ 4] 2.00-3.00 sec 102 MBytes 854 Mbits/sec [ 4] 3.00-4.00 sec 104 MBytes 876 Mbits/sec [ 4] 4.00-5.00 sec 104 MBytes 871 Mbits/sec [ 4] 5.00-6.00 sec 97.6 MBytes 818 Mbits/sec [ 4] 6.00-7.00 sec 106 MBytes 891 Mbits/sec [ 4] 7.00-8.00 sec 102 MBytes 852 Mbits/sec [ 4] 8.00-9.00 sec 104 MBytes 875 Mbits/sec [ 4] 9.00-10.00 sec 100 MBytes 840 Mbits/sec - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-10.00 sec 1.01 GBytes 866 Mbits/sec 0 sender [ 4] 0.00-10.00 sec 1.01 GBytes 864 Mbits/sec receiver
January 13, 20242 yr Community Expert That looks normal, you are getting close to line speed in both directions, where (doing what) are you seeing the speed limited to 20MB/s?
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