Re: Raspberry Pi 3B+ and pitiful network speeds
Date: Mon, 21 Jun 2021 22:24:02 UTC
<snip>> * an nc process at each end of the TCP connection > * a dd process piped to each nc process to measure the throughput > * no filesystem access, hence the dd processes reading from /dev/urandom > (or /dev/zero if you like) and writing to /dev/null > > Which would be along these lines: > > # TCP download > freebsdrpi$ nc -l 10000 | dd bs=1m of=/dev/null > linuxpc$ dd if=/dev/zero bs=1M count=2000 status=progress | \ > nc freebsdrpi 10000 > # TCP upload > linuxpc$ nc -l 15000 | dd bs=1M of=/dev/null status=progress > freebsdrpi$ dd if=/dev/zero bs=1m count=2000 | nc linuxpc 15000 Thank you for your assistance, Denis. This is a lengthy post. Results from FreeBSD 13 headless PC (gateway) to FreeBSD RPI3B+ (rpi3): -------------------------------------------- [TCP DOWNLOAD] RPI3B+: nc -l 10000 | dd bs=1m of=/dev/null 0+342615 records in 2000+0 records out 2097152000 bytes transferred in 277.126050 secs (7567502 bytes/sec) FreeBSD13: dd if=/dev/zero bs=1M count=2000 status=progress | nc rpi3 10000 2094006272 bytes (2094 MB, 1997 MiB) transferred 265.056s, 7900 kB/s 2000+0 records in 1747+506 records out 2097152000 bytes transferred in 265.354504 secs (7903209 bytes/sec) -------------------------------------------- [TCP UPLOAD] RPI3B+: dd if=/dev/zero bs=1m count=2000 | nc gateway 15000 2000+0 records in 2000+0 records out 2097152000 bytes transferred in 198.379433 secs (10571418 bytes/sec) FreeBSD13: nc -l 15000 | dd bs=1M of=/dev/null status=progress 2095054848 bytes (2095 MB, 1998 MiB) transferred 200.017s, 10 MB/s 0+281264 records in 2000+0 records out 2097152000 bytes transferred in 203.023846 secs (10329585 bytes/sec) <<< The gateway/FreeBSD13 is gigabit capable on the tested card.>>> I also tested using iperf: Upload from FreeBSD PC to RPI3B+: iperf -c rpi3 -w 2m -t 30s -i 1 ------------------------------------------------------------ Client connecting to rpi3, TCP port 5001 TCP window size: 32.8 KByte (WARNING: requested 1.91 MByte) ------------------------------------------------------------ [ 1] local 192.168.1.106 port 29887 connected with 192.168.1.24 port 5001 [ ID] Interval Transfer Bandwidth [ 1] 0.00-1.00 sec 7.75 MBytes 65.0 Mbits/sec [ 1] 1.00-2.00 sec 8.12 MBytes 68.2 Mbits/sec [ 1] 2.00-3.00 sec 10.5 MBytes 88.1 Mbits/sec [ 1] 3.00-4.00 sec 10.4 MBytes 87.0 Mbits/sec [ 1] 4.00-5.00 sec 10.2 MBytes 86.0 Mbits/sec [ 1] 5.00-6.00 sec 10.2 MBytes 86.0 Mbits/sec [ 1] 6.00-7.00 sec 6.00 MBytes 50.3 Mbits/sec [ 1] 7.00-8.00 sec 9.75 MBytes 81.8 Mbits/sec [ 1] 8.00-9.00 sec 8.88 MBytes 74.4 Mbits/sec [ 1] 9.00-10.00 sec 8.38 MBytes 70.3 Mbits/sec [ 1] 10.00-11.00 sec 10.0 MBytes 83.9 Mbits/sec [ 1] 11.00-12.00 sec 9.12 MBytes 76.5 Mbits/sec [ 1] 12.00-13.00 sec 9.12 MBytes 76.5 Mbits/sec [ 1] 13.00-14.00 sec 10.1 MBytes 84.9 Mbits/sec [ 1] 14.00-15.00 sec 5.38 MBytes 45.1 Mbits/sec [ 1] 15.00-16.00 sec 7.50 MBytes 62.9 Mbits/sec [ 1] 16.00-17.00 sec 7.62 MBytes 64.0 Mbits/sec [ 1] 17.00-18.00 sec 9.25 MBytes 77.6 Mbits/sec [ 1] 18.00-19.00 sec 5.38 MBytes 45.1 Mbits/sec [ 1] 19.00-20.00 sec 5.62 MBytes 47.2 Mbits/sec [ 1] 20.00-21.00 sec 10.0 MBytes 83.9 Mbits/sec [ 1] 21.00-22.00 sec 8.62 MBytes 72.4 Mbits/sec [ 1] 22.00-23.00 sec 9.88 MBytes 82.8 Mbits/sec [ 1] 23.00-24.00 sec 6.25 MBytes 52.4 Mbits/sec [ 1] 24.00-25.00 sec 9.88 MBytes 82.8 Mbits/sec [ 1] 25.00-26.00 sec 10.2 MBytes 86.0 Mbits/sec [ 1] 26.00-27.00 sec 10.2 MBytes 86.0 Mbits/sec [ 1] 27.00-28.00 sec 10.2 MBytes 86.0 Mbits/sec [ 1] 28.00-29.00 sec 10.2 MBytes 86.0 Mbits/sec [ 1] 29.00-30.00 sec 10.2 MBytes 86.0 Mbits/sec [ 1] 0.00-30.22 sec 265 MBytes 73.7 Mbits/sec ---------------------------------------------------------------------------- From RPI3B+ to FreeBSD PC: iperf -c 192.168.1.106 -w 2m -t 30s -i 1 ------------------------------------------------------------ Client connecting to 192.168.1.106, TCP port 5001 TCP window size: 1.91 MByte (WARNING: requested 1.91 MByte) ------------------------------------------------------------ [ 1] local 192.168.1.24 port 55499 connected with 192.168.1.106 port 5001 [ ID] Interval Transfer Bandwidth [ 1] 0.00-1.00 sec 12.1 MBytes 102 Mbits/sec [ 1] 1.00-2.00 sec 10.4 MBytes 87.0 Mbits/sec [ 1] 2.00-3.00 sec 10.5 MBytes 88.1 Mbits/sec [ 1] 3.00-4.00 sec 10.4 MBytes 87.0 Mbits/sec [ 1] 4.00-5.00 sec 10.4 MBytes 87.0 Mbits/sec [ 1] 5.00-6.00 sec 10.4 MBytes 87.0 Mbits/sec [ 1] 6.00-7.00 sec 10.5 MBytes 88.1 Mbits/sec [ 1] 7.00-8.00 sec 10.4 MBytes 87.0 Mbits/sec [ 1] 8.00-9.00 sec 10.4 MBytes 87.0 Mbits/sec [ 1] 9.00-10.00 sec 10.4 MBytes 87.0 Mbits/sec [ 1] 10.00-11.00 sec 10.4 MBytes 87.0 Mbits/sec [ 1] 11.00-12.00 sec 10.5 MBytes 88.1 Mbits/sec [ 1] 12.00-13.00 sec 10.4 MBytes 87.0 Mbits/sec [ 1] 13.00-14.00 sec 10.5 MBytes 88.1 Mbits/sec [ 1] 14.00-15.00 sec 10.4 MBytes 87.0 Mbits/sec [ 1] 15.00-16.00 sec 10.4 MBytes 87.0 Mbits/sec [ 1] 16.00-17.00 sec 10.2 MBytes 86.0 Mbits/sec [ 1] 17.00-18.00 sec 10.0 MBytes 83.9 Mbits/sec [ 1] 18.00-19.00 sec 9.38 MBytes 78.6 Mbits/sec [ 1] 19.00-20.00 sec 9.50 MBytes 79.7 Mbits/sec [ 1] 20.00-21.00 sec 9.50 MBytes 79.7 Mbits/sec [ 1] 21.00-22.00 sec 9.88 MBytes 82.8 Mbits/sec [ 1] 22.00-23.00 sec 10.4 MBytes 87.0 Mbits/sec [ 1] 23.00-24.00 sec 10.4 MBytes 87.0 Mbits/sec [ 1] 24.00-25.00 sec 10.4 MBytes 87.0 Mbits/sec [ 1] 25.00-26.00 sec 9.88 MBytes 82.8 Mbits/sec [ 1] 26.00-27.00 sec 10.4 MBytes 87.0 Mbits/sec [ 1] 27.00-28.00 sec 10.5 MBytes 88.1 Mbits/sec [ 1] 28.00-29.00 sec 10.4 MBytes 87.0 Mbits/sec [ 1] 29.00-30.00 sec 10.4 MBytes 87.0 Mbits/sec [ 1] 0.00-30.19 sec 310 MBytes 86.0 Mbits/sec Now, I could run these very same tests off Devuan if you like? This may help disprove any network issues? Although, as I've stated, the Devuan version running on the RPI3 consistently gets up to 3 times this speed. Thanks Matt.