netdev - Re: Poor thunderbolt-net interface performance when bridged

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Message-Id: <78AA82DB-92BE-4CD5-8EC7-239E6A93A465@bejarano.io>
Date: Wed, 28 May 2025 08:38:29 +0200
From: Ricard Bejarano <ricard@...arano.io>
To: Andrew Lunn <andrew@...n.ch>
Cc: Mika Westerberg <mika.westerberg@...ux.intel.com>,
 netdev@...r.kernel.org,
 michael.jamet@...el.com,
 YehezkelShB@...il.com,
 andrew+netdev@...n.ch,
 davem@...emloft.net,
 edumazet@...gle.com,
 kuba@...nel.org,
 pabeni@...hat.com
Subject: Re: Poor thunderbolt-net interface performance when bridged

This impacts performance so much that I can't even test it.

iperf3 doesn't even start and ping shows >1s latency:

root@red:~# ping 10.0.0.2
PING 10.0.0.2 (10.0.0.2) 56(84) bytes of data.
64 bytes from 10.0.0.2: icmp_seq=1 ttl=64 time=1041 ms
64 bytes from 10.0.0.2: icmp_seq=2 ttl=64 time=1024 ms
64 bytes from 10.0.0.2: icmp_seq=3 ttl=64 time=1025 ms

I'm looking where else we can put this that's not as intrusive.

Thanks,
RB