Dear all, I am unable to achieve decent throughput with a 1 GigE interface (Intel I210) on OpenBSD 6.6. When running iperf3 I get around 145Mbit/s.
The config/setup is: APU2c4, Win10 notebook, no switch, Cat.6a cable, MTU 1500, 1000baseT, full-duplex, pf disabled, BSD.mp, no custom Kernel parameters/optimizations. With an increased MTU of 9000 (on both devices) the throughput is around 230-250Mbit/s. When running the same test with a FreeBSD 12.1 on the APU I achieve around 940Mbit/s (MTU 1500). The BIOS has been updated to the latest version (v4.11.0.2). The hardware of the device is: https://pcengines.ch/apu2c0.htm dmesg output: https://paste.ee/p/OeRbI Any inputs and help is highly appreciated. Many thanks, Livio PS: I ran the same tests on an APU1c4 with Realtek RTL8111E interfaces. The results were lower - around 95Mbit/s. https://pcengines.ch/apu1c4.htm PPS: Others also seem to have low throughput. None of the tuning recommendations I found online substantially improved my results: https://www.reddit.com/r/openbsd/comments/cg9vhq/poor_network_performance_pcengines_apu4/
