Date: Wed, 22 Oct 2025 15:03:04 +0100 From: void <void@f-m.fm> To: freebsd-net@freebsd.org Subject: vtnet is still slow Message-ID: <aPjkGDgl6MCF-unb@int21h>
next in thread | raw e-mail | index | archive | help
Hi, I wondered if any work was happening to address the long-standing issue of slow vtnet? (in my case, this leads to slow freebsd guest performance in bhyve compared with every linux guest tested and OpenBSD). I thought maybe the recent bridge work may have ameliorated the problem some, but testing, after configuring a (recent) stable/15 server to use the ip-configured-on-bridge-method, showed no improvement using a (recent) stable/14 guest [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-60.03 sec 3.17 GBytes 454 Mbits/sec 0 sender [ 5] 0.00-60.03 sec 3.17 GBytes 454 Mbits/sec receiver for comparison, an ubuntu 25.04 guest: [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-60.00 sec 6.42 GBytes 919 Mbits/sec 5427 sender [ 5] 0.00-60.00 sec 6.42 GBytes 919 Mbits/sec receiver the baremetal host [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-60.01 sec 6.58 GBytes 941 Mbits/sec 0 sender [ 5] 0.00-60.01 sec 6.58 GBytes 941 Mbits/sec receiver Tests done a year and a half ago on similar hardware showing the same patterns http://void.f-m.fm.user.fm/bhyve-virtio-testing.html --
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?aPjkGDgl6MCF-unb>