Date: Tue, 2 Dec 2025 15:47:43 +0000 From: Sad Clouds <cryintothebluesky@gmail.com> To: mike tancsa <mike@sentex.net> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: Strange Chelsio performance (T6225-CR) Message-ID: <20251202154743.41939bf415766de73ecb558e@gmail.com> In-Reply-To: <4503cca3-dd1d-4bd0-a82c-f9c2866f468a@sentex.net> References: <4503cca3-dd1d-4bd0-a82c-f9c2866f468a@sentex.net>
index | next in thread | previous in thread | raw e-mail
On Mon, 1 Dec 2025 13:01:28 -0500 mike tancsa <mike@sentex.net> wrote: > TL;DR. I can get 10G coming in and out on port 0, Port 1 can only take > traffic at ~ 2.5 Gb/s incoming, but can send out a full 10G. I've seen asymmetric throughput performance similar to what you report with Intel X520-SR2 and when using device passthrough in Bhyve VMs running FreeBSD-14.3. Configuring the switch and network interfaces to use MTU of 9000 bytes resolved the issue for me. After this, the send and receive throughput performance has remained stable at around 9 Gb/sec.help
Want to link to this message? Use this
URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20251202154743.41939bf415766de73ecb558e>