jdaiii

Hi all, I’ve been dealing with a frustrating network issue on my Unraid server (version 6.12.13) for several months, and after diving deeper into troubleshooting today, I’m still unable to resolve it. Despite my experience with Unraid and Linux, I’m coming up short, so I’m hoping someone in the community can help shed light on this. TL;DR: • I have gigabit speeds from my ISP (Cox Communications). • Running speed tests directly in the Unraid terminal results in speeds between 600-750 Mbps, which is expected. • However, all Docker containers are limited to around 100 Mbps download speeds, regardless of configuration. Full Details: This issue became apparent a few months ago when I noticed one of my Docker applications was stuck downloading at around 100 Mbps. To investigate, I installed a Speedtest Docker container, and it also reported speeds of 96 Mbps down and 98 Mbps up, confirming the cap. Testing further, I plugged the same Ethernet cable into my laptop, and speeds jumped up to 800 Mbps, so I knew the issue was with Docker on Unraid. Steps I’ve Taken to Troubleshoot: 1. Speedtest on Host: Running speedtest-cli directly on the Unraid server consistently shows 500-750 Mbps, proving the host system is receiving the correct speeds from my ISP. 2. Network Mode Changes: I tried switching the Docker containers from bridge mode to host mode in an attempt to bypass any internal Docker network limitations, but this didn’t help. 3. Swapped Between ipvlan and macvlan: Given that Unraid made ipvlan the default in recent years, I tried switching between the two network drivers. Unfortunately, this didn’t resolve the issue either. 4. Rewrote daemon.json: I followed recommendations from ChatGPT to rewrite my Docker daemon.json file for optimization, but again, no improvement. 5. Multiple Docker Containers Tested: I ran speed tests across several different Docker containers, but they all max out at around 100 Mbps download—even though I know the server itself can handle much higher speeds. Network Information: • Bonding: Disabled bonding since I only have one NIC (onboard). • Bridging: Enabled bridging. • MTU: Set to 1500 (default for standard Ethernet). • NIC: I’m using the onboard Ethernet from my motherboard, which is an Intel I211 Gigabit Network Connection. • Driver: igb (version 6.1.106-Unraid). • Speed: 1 Gbps (full duplex), confirmed via ethtool eth0. Here’s the full output of ethtool eth0: 🌶 :/etc/docker$ 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 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 Advertised auto-negotiation: Yes Advertised FEC modes: Not reported Speed: 1000Mb/s Duplex: Full Auto-negotiation: on Port: Twisted Pair PHYAD: 1 Transceiver: internal MDI-X: off (auto) Supports Wake-on: pumbg Wake-on: g Current message level: 0x00000007 (7) drv probe link Link detected: yes The Unraid terminal speed test shows speeds between 500-750 Mbps, while Docker containers consistently max out at 100 Mbps. Other Considerations: • Cabling: I terminate my own Ethernet cables and have tested them. My hardware is capable of steady 1 Gbps speeds, as proven by tests outside Docker. • CPU/Memory: Server load is minimal, with CPU usage below 10% and memory at around 20%. • No Bonding: I’ve disabled bonding as I only have one NIC, and I’m using ipvlan as the network driver. At this point, I’m out of ideas. The server itself is consistently getting gigabit speeds, but Docker containers are stuck around 100 Mbps. This seems to be an issue that others have encountered, but I haven’t found a solution. For reference, here’s a related thread I found on Reddit: Docker Speeds Limited to 100Mbps. Any help or suggestions would be greatly appreciated! My neighborhood is getting 5Gbps symmetrical and I want to upgrade to at least 2.5G but if I'm stuck at 100Mbps on my containers. Well, that sucks. Thanks in advance!