ng_eth: can't achieve 10G throughput
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Date: Tue, 29 Nov 2022 11:05:33 UTC
hi all , I've an issue to achieve goos performance using netgraph thatis not reproduced with a if_bridge interface. I have setup my network using netgraph like this: https://www.friendpaste.com/4zrXvdx1l5fjDRG1oheHMN I am using ngeth1 as main port and setup it to 10G connected to a bridge linked to the main interface ixl2 as the diagram below show: https://imgur.com/a/5nTHqEi But I can't get more than 1.5Gb/s throughput (see iperf log below) ``` iperf3 -c XXXX:10 Connecting to host XXXX::10, port 5201 [ 5] local XXXX::11 port 24822 connected to XXXX::10 port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 192 MBytes 1.61 Gbits/sec 141 70.3 KBytes [ 5] 1.00-2.00 sec 193 MBytes 1.62 Gbits/sec 143 64.7 KBytes [ 5] 2.00-3.00 sec 194 MBytes 1.63 Gbits/sec 144 43.6 KBytes [ 5] 3.00-4.00 sec 183 MBytes 1.54 Gbits/sec 144 46.4 KBytes [ 5] 4.00-5.00 sec 196 MBytes 1.64 Gbits/sec 144 23.9 KBytes [ 5] 5.00-6.00 sec 190 MBytes 1.60 Gbits/sec 143 2.81 KBytes [ 5] 6.00-7.00 sec 169 MBytes 1.42 Gbits/sec 146 11.2 KBytes [ 5] 7.00-8.00 sec 164 MBytes 1.38 Gbits/sec 147 73.1 KBytes [ 5] 8.00-9.00 sec 166 MBytes 1.39 Gbits/sec 147 75.9 KBytes [ 5] 9.00-10.00 sec 166 MBytes 1.39 Gbits/sec 147 8.44 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 1.77 GBytes 1.52 Gbits/sec 1446 sender [ 5] 0.00-10.00 sec 1.77 GBytes 1.52 Gbits/sec receiver ``` Where with the interface alone I get 9.8 Gb/s. With an if_bridge bridge I get 7Gb/s . Any idea what's wrong in my configuration? Also why an ng_eth interface is set to 1 1000baseT mode while epar is set correctly to 10GbaseT ? Benoît