Funny, cause I have almost identical speeds to/from my OpenBSD to/from my Debian, but different results between OpenBSD to OpenBSD and Debian to Debian.
All servers are sitting on a 4x1GB LACP-link in the same network switch *OpenBSD 6.3 to OpenBSD 6.3* **# iperf3 -4 -c ns1.semarkit.net Connecting to host ns1.semarkit.net, port 5201 [ 4] local 192.168.245.1 port 47049 connected to 192.168.245.9 port 5201 [ ID] Interval Transfer Bandwidth [ 4] 0.00-1.00 sec 56.3 MBytes 472 Mbits/sec [ 4] 1.00-2.00 sec 64.0 MBytes 537 Mbits/sec [ 4] 2.00-3.00 sec 64.8 MBytes 543 Mbits/sec [ 4] 3.00-4.00 sec 66.0 MBytes 554 Mbits/sec [ 4] 4.00-5.00 sec 64.8 MBytes 544 Mbits/sec [ 4] 5.00-6.00 sec 67.1 MBytes 562 Mbits/sec [ 4] 6.00-7.00 sec 66.7 MBytes 558 Mbits/sec [ 4] 7.00-8.00 sec 63.3 MBytes 533 Mbits/sec [ 4] 8.00-9.00 sec 65.2 MBytes 547 Mbits/sec [ 4] 9.00-10.00 sec 66.5 MBytes 558 Mbits/sec - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth [ 4] 0.00-10.00 sec 645 MBytes 541 Mbits/sec sender [ 4] 0.00-10.00 sec 645 MBytes 541 Mbits/sec receiver iperf Done. *OpenBSD 6.3 to Debian Stretch* # iperf3 -4 -c 192.168.245.7 Accepted connection from 192.168.245.7, port 55458 [ 5] local 192.168.245.9 port 5201 connected to 192.168.245.7 port 55460 [ ID] Interval Transfer Bandwidth [ 5] 0.00-1.00 sec 96.0 MBytes 805 Mbits/sec [ 5] 1.00-2.00 sec 136 MBytes 1.14 Gbits/sec [ 5] 2.00-3.00 sec 148 MBytes 1.25 Gbits/sec [ 5] 3.00-4.00 sec 163 MBytes 1.37 Gbits/sec [ 5] 4.00-5.00 sec 179 MBytes 1.50 Gbits/sec [ 5] 5.00-6.00 sec 178 MBytes 1.49 Gbits/sec [ 5] 6.00-7.00 sec 185 MBytes 1.55 Gbits/sec [ 5] 7.00-8.00 sec 179 MBytes 1.50 Gbits/sec [ 5] 8.00-9.00 sec 183 MBytes 1.54 Gbits/sec [ 5] 9.00-10.00 sec 183 MBytes 1.53 Gbits/sec [ 5] 10.00-10.00 sec 0.00 Bytes 0.00 bits/sec - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth [ 5] 0.00-10.00 sec 0.00 Bytes 0.00 bits/sec sender [ 5] 0.00-10.00 sec 1.59 GBytes 1.37 Gbits/sec receiver ----------------------------------------------------------- *Debian Stretch to OpenBSD 6.3 * # iperf3 -4 -c ns1.semarkit.net Connecting to host ns1.semarkit.net, port 5201 [ 4] local 192.168.245.7 port 55460 connected to 192.168.245.9 port 5201 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-1.00 sec 96.3 MBytes 808 Mbits/sec 0 55.1 KBytes [ 4] 1.00-2.00 sec 136 MBytes 1.14 Gbits/sec 0 90.5 KBytes [ 4] 2.00-3.00 sec 149 MBytes 1.25 Gbits/sec 0 124 KBytes [ 4] 3.00-4.00 sec 163 MBytes 1.37 Gbits/sec 0 157 KBytes [ 4] 4.00-5.00 sec 179 MBytes 1.50 Gbits/sec 0 191 KBytes [ 4] 5.00-6.00 sec 178 MBytes 1.49 Gbits/sec 0 225 KBytes [ 4] 6.00-7.00 sec 185 MBytes 1.56 Gbits/sec 0 266 KBytes [ 4] 7.00-8.00 sec 179 MBytes 1.51 Gbits/sec 0 296 KBytes [ 4] 8.00-9.00 sec 184 MBytes 1.54 Gbits/sec 0 327 KBytes [ 4] 9.00-10.00 sec 183 MBytes 1.54 Gbits/sec 0 375 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-10.00 sec 1.59 GBytes 1.37 Gbits/sec 0 sender [ 4] 0.00-10.00 sec 1.59 GBytes 1.37 Gbits/sec receiver iperf Done. *Debian Stretch to Debian Stretch* # iperf3 -4 -c 192.168.245.231 Connecting to host 192.168.245.231, port 5201 [ 4] local 192.168.245.7 port 55028 connected to 192.168.245.231 port 5201 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-1.00 sec 269 MBytes 2.26 Gbits/sec 0 1.72 MBytes [ 4] 1.00-2.00 sec 265 MBytes 2.22 Gbits/sec 0 2.17 MBytes [ 4] 2.00-3.00 sec 232 MBytes 1.95 Gbits/sec 494 1.13 MBytes [ 4] 3.00-4.00 sec 254 MBytes 2.13 Gbits/sec 0 1.17 MBytes [ 4] 4.00-5.00 sec 291 MBytes 2.44 Gbits/sec 0 1.17 MBytes [ 4] 5.00-6.00 sec 287 MBytes 2.40 Gbits/sec 0 1.17 MBytes [ 4] 6.00-7.00 sec 297 MBytes 2.49 Gbits/sec 0 1.17 MBytes [ 4] 7.00-8.00 sec 289 MBytes 2.42 Gbits/sec 0 1.17 MBytes [ 4] 8.00-9.00 sec 301 MBytes 2.53 Gbits/sec 0 1.17 MBytes [ 4] 9.00-10.00 sec 296 MBytes 2.48 Gbits/sec 0 1.42 MBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-10.00 sec 2.72 GBytes 2.33 Gbits/sec 494 sender [ 4] 0.00-10.00 sec 2.71 GBytes 2.33 Gbits/sec receiver iperf Done. Med Venlig Hilsen / Best Regards Henrik Dige Semark On 2018-07-14 14:09, Stuart Henderson wrote: > On 2018-07-13, Sijmen J. Mulder <i...@sjmulder.nl> wrote: >> After migrating a VPS from FreeBSD to OpenBSD I noticed reduced networking >> performance. > Yes, that's not a huge surprise, FreeBSD has taken speed as quite a high > priority, OpenBSD has concentrated more on other areas. > > As more of the kernel becomes parallelised between multiple cpu cores > and bottlenecks are identified and fixed, this should improve. > >
