Hi,
Please allow me few questions regarding 10GBit network performance on
OpenBSD 6.4.
I face quite low network performance for the Intell X520-DA2 10GBit
network card.
Test configuration in OpenBSD-Linux-10GBit_net_performance.txt -
http://paste.debian.net/1076461/
Low transfer rate for scp - OpenBSD-10GBit-perftest.txt -
http://paste.debian.net/1076460/
Test configuration:
# ---
# OpenBSD 6.4 on HP DL380g7
# -------------------------
# 10GBit X520-DA2 NIC
ix0: flags=208843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,AUTOCONF6> mtu 1500
media: Ethernet autoselect (10GbaseSR full-duplex,rxpause,txpause)
inet6 fe80::d51e:1b74:17d7:8230%ix0 prefixlen 64 scopeid 0x1
inet 200.0.0.3 netmask 0xffffff00 broadcast 200.0.0.255
ix1: flags=208843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,AUTOCONF6> mtu 1500
media: Ethernet autoselect (10GbaseSR full-duplex,rxpause,txpause)
inet 10.0.0.7 netmask 0xffffff00 broadcast 10.0.0.255
inet6 fe80::b488:caea:5d6f:9992%ix1 prefixlen 64 scopeid 0x2
# ---
Compare to Linux the 10GBit transfer from/to OpenBSD is few times slower:
# ---
# OpenBSD to Linux (Asus P8BWS)
# -----------------------------
srvob# iperf3 -c 10.0.0.2
...
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate
[ 5] 0.00-10.00 sec 1.50 GBytes 1.29 Gbits/sec sender
[ 5] 0.00-10.20 sec 1.50 GBytes 1.27 Gbits/sec
receiver
# ---
# ---
# Linux (DL380g7) to Linux (Asus P8BWS)
# -------------------------------------
root@kali:~# iperf3 -c 100.0.0.2
...
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 10.9 GBytes 9.39 Gbits/sec 328 sender
[ 5] 0.00-10.04 sec 10.9 GBytes 9.35 Gbits/sec
receiver
# ---
The scp transfer rate is like 21MBytes/s only per ssh connection
(OpenBSD <-> Linux):
# ---
root@kali:~# scp /re*/b*/ka*/kali-linux-kde-2019.1a-*.iso
ironm@10.0.0.7:/home/ironm/t12.iso
ironm@10.0.0.7's password:
kali-linux-kde-2019.1a-amd64.iso 4% 173MB
21.5MB/s 02:40 ETA
# ---
The 1GBit cooper based NIC works also slower but reaching almost 40% of
the max trasfer rate of 1 Gbit:
# ---
# OpenBSD 6.4 (DL380g7 1Gbit NIC) to Linux (DL380g7 1GBit NIC)
# ------------------------------------------------------------
srvob# iperf3 -c 170.0.0.10
...
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate
[ 5] 0.00-10.00 sec 471 MBytes 395 Mbits/sec sender
[ 5] 0.00-10.20 sec 471 MBytes 388 Mbits/sec
receiver
# ---
# ---
# Linux (Asus P8BWS) to Linux (DL380g7)
# -------------------------------------
root@kali:~# iperf3 -c 192.168.1.122
...
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 1.09 GBytes 939 Mbits/sec 183 sender
[ 5] 0.00-10.04 sec 1.09 GBytes 934 Mbits/sec
receiver
# ---
Thank you in advance for your hints what OpenBSD 6.4 settings do I miss.
Best regards
Mark
--
m...@it-infrastrukturen.org
