Hello everyone,
I have installed Openwrt on a Fritzbox 7490. I have configured LAN port 1 as WAN and LAN port 4 as LAN.
I only get about 80mbit throughput. Is this normal with the 7490 and openwrt? With AVM firmware, the 7490 manages to fully utilize my Gigabit connection.
If this is not normal, does anyone have a tip as to what could be causing this?
Best regards
OpenWrt doesn't have any support for hardware-accelerated routing on this hardware, so it all runs on the CPU, which is quite slow by modern standards.
Thanks for the answer, that saves me troubleshooting. Too bad, I didn't expect that.
lantiq VRX288, the SOC of your router, is a a two core mips 24Kc CPU running at 500 MHz, released in ~2012 as VDSL2 gateway with a system inherent (VDSL2+vectoring/ profile 17b) maximum speed of ~100/40 MBit/s. That's what it's been designed for. With OpenWrt, around 80-85 MBit/s throughput is the maximum for this SOC, by enabling software flow-offloading, you can extend that a bit further (usually covering the requirements for 100/40 MBit/s), but it's not a fast device.
GigE ports are connected via gigabit switching ASIC so LAN connection will not touch (slow) SoC CPU, for the rest "it depends" - first there is a 5th gigabit port to SoC CPU, the less processing it does on CPU the closer to SoC RAM speed forwarding gets, e.g flow offload in case of NAT or routing, or "bridger" package for dumb-ap are of help, but dont expect wonders.
I don't think anything will help, I can't use the Fritzbox like this. I'm currently looking at this router. I think it has an excellent price/performance ratio and is ideal for openwrt.
GL.iNet GL-MT6000(Flint 2) WiFi 6 Router | Gaming-WLAN-Router | 2 x 2,5G Multi-Gig-Port + 4 x 1G Ethernet-Ports | Massengerätekonnektivität | Schnelles OpenVpn & WireGuard | 802.11ax https://amzn.eu/d/35icSTq
https://openwrt.org/toh/views/toh_available_16128_ax-wifi
cudy cheaper if in shop near you.
Not even that, it is just a single 34Kc core with two VPEs (i.e. similar to what is known as Hyper-Threading in the x86 world).
You have fancy management interface of a switch, but for forwarding over CPU like wifi or routing anything it will be on the low end. Like dumb-ap extender in less walked corner of dwelling.