Hi Peter, Thanks for your reply. I would already be quite happy with ~500Mbit/s. My test do not involve a switch, just a notebook and the APU through a Cat.6a cable. I achieve 940Mbit/s with the exact same setup but FreeBSD 12.1 on the APU.
I am happy to change parameters, provide additional logs and run any number of tests. I am currently out of ideas. $ uname -a OpenBSD apu.liv.io 6.6 GENERIC.MP#4 amd64 $ ifconfig em0 em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 lladdr 00:0d:b9:41:70:20 index 1 priority 0 llprio 3 media: Ethernet 1000baseT full-duplex (1000baseT full-duplex,master,rxpause,txpause) status: active inet 10.10.1.241 netmask 0xffffff00 broadcast 10.10.1.255 Thank you, Livio On 1/30/2020 4:38 PM, Peter J. Philipp wrote: > On Thu, Jan 30, 2020 at 03:43:41PM +0100, livio wrote: >> 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 > Hi, > > Without any tuning arguments I get: > > chi# iperf -c beta.internal.centroid.eu > ------------------------------------------------------------ > Client connecting to beta.internal.centroid.eu, TCP port 5001 > TCP window size: 17.0 KByte (default) > ------------------------------------------------------------ > [ 3] local 192.168.177.40 port 13242 connected with 192.168.177.2 port 5001 > [ ID] Interval Transfer Bandwidth > [ 3] 0.0-10.0 sec 536 MBytes 449 Mbits/sec > > ... on an APU1C4, could it be you have a slow switch or router? Any other > hardware that could slow yours down? > > I'm happy with this result, the APU1 is not really a powerhorse. > > Regards, > > -peter > >> 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/ >>
