I am facing a bit of a performance issue when using my APU6 directly behind ONT, basically my download max is 250 Mib/s while it should 900+ Mib/s here is summery:
* PPPoE is configured correctly, I can get a session but not my full speed
* I am using APU6 4GB ram https://www.pcengines.ch/apu6b4.htm
* LAN <---> APU6 "OPNSense 25.1.2-amd64" <---> ISP Router "PPPoE" <---> ONT <---> INTERNET and I am getting my full speed 900+ Mib/s to my LAN
* LAN <---> APU6 "OPNSense 25.1.2-amd64" <---> ONT <---> INTERNET and I am getting max 250 Mib/s on my LAN
I tried with compression off, hardware offloading off, same results 250 Mib/s max download speed
and this made me wonder, since when I am behind ISP router, my LAN still getting full bandwidth via the OPNSense box, but not while I am running PPPoE directly, is there some tweaks needs to be done? some kernel parameter? I think PPPoE is capped on the kernel or something
The GX-412TC in its fastest configuration has 1.4 Ghz and only about 11% of the performance of an N100. Your board limits the CPU to 1 GHz, so it is right at its limit with 250 MBit/s.
Quote from: meyergru on March 03, 2025, 05:38:00 PMThe GX-412TC in its fastest configuration has 1.4 Ghz and only about 11% of the performance of an N100. Your board limits the CPU to 1 GHz, so it is right at its limit with 250 MBit/s.
interesting, still the same APU can do 1.0 Gib/s from internet to LAN but not over PPPoE? also CPU load on OPNSense while on PPPoE doesn't hit 60%
Adding to that, the router I tested and worked fine and got me max speed, is ASUS AC87U, which is 10 years old, I know they are custom build for that and ARM, however I still get the full speed and not with the APU.
(Heh. Slow post - behind the curve. But hey...)
Neat device, but amazingly slow. Still, should be faster than most ARM-based consumer cable/wi-fi/etc. routers.
Anyway, lacking data, my first suspicion would be MTU issues. Have you dealt with that (target MTU, TCP MSS, fragmentation, PMTUD, etc.) already?
We are speaking OpnSense here, which is based in FreeBSD and that does not go well with PPPoE, as it is inherently single-threaded on FreeBSD.
So, if you neither use PPPoE nor OpnSense, you may be fine with 1 GBit/s routing speed with that CPU.
Seems like this is the issue after testing and reading some more threads here, oh well, I guess I am stuck behind this ISP router for a bit then :)