[Bug 268490] [igb] [lagg] [vlan]: Intel i210 performance severely degraded

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=268490

--- Comment #42 from Daniel Duerr <duerrd561@gmail.com> ---
(In reply to Zhenlei Huang from comment #41)

Hi Zhenlei,

Sure. Here's the result of that test, using the same kernel I had built for
Kevin in my previous comment yesterday. The performance is still dismal.

[root@nfs src]# uname -a
FreeBSD nfs.tidepool.cloud 12.4-RELEASE-p1 FreeBSD 12.4-RELEASE-p1 #26
releng/12.4-n235814-4f54a7f1b95c-dirty: Thu Apr 13 06:52:12 PDT 2023    
toor@nfs.tidepool.cloud:/usr/obj/usr/src/amd64.amd64/sys/GENERIC-NODEBUG  amd64
[root@nfs src]# ifconfig lagg0 
lagg0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 9000
        options=800028<VLAN_MTU,JUMBO_MTU>
        ether 00:25:90:d6:e6:72
        laggproto lacp lagghash l2,l3,l4
        laggport: igb0 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING>
        laggport: igb1 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING>
        groups: lagg
        media: Ethernet autoselect
        status: active
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
[root@nfs src]# ifconfig igb0 down
[root@nfs src]# ifconfig lagg0
lagg0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 9000
        options=800028<VLAN_MTU,JUMBO_MTU>
        ether 00:25:90:d6:e6:72
        laggproto lacp lagghash l2,l3,l4
        laggport: igb0 flags=0<>
        laggport: igb1 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING>
        groups: lagg
        media: Ethernet autoselect
        status: active
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
[root@nfs src]# iperf -s
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 64.0 KByte (default)
------------------------------------------------------------
[  1] local 172.27.6.135 port 5001 connected with 172.27.6.129 port 26356
[  2] local 172.27.6.135 port 5001 connected with 172.27.6.129 port 26357
[  3] local 172.27.6.135 port 5001 connected with 172.27.6.129 port 30833
recv failed: Connection reset by peer
[ ID] Interval       Transfer     Bandwidth
[  1] 0.00-79.38 sec  60.0 Bytes  6.05 bits/sec
recv failed: Connection reset by peer
[  2] 0.00-79.38 sec  60.0 Bytes  6.05 bits/sec
recv failed: Connection reset by peer
[  3] 0.00-79.38 sec  60.0 Bytes  6.05 bits/sec
[SUM] 0.00-122.03 sec   180 Bytes  11.8 bits/sec

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