Re: Performance issues with vnet jails + epair + bridge

Thanks for your testing!

From your VM test result in the link, if I understand correctly, the CUBIC
in base stack has +24.5% better performance than the CUBIC in rack stack,
and it is better than old releases and OpenBSD. That sounds like an
improvement, although it still needs to be improved to catch up with the
Linux kernel.

FreeBSD 15.0-CURRENT base_stack: 807 Mbits/sec
FreeBSD 15.0-CURRENT rack_stack: 648 Mbits/sec
FreeBSD 14.0-RELEASE:            594 Mbits/sec
FreeBSD 14.0-RELEASE-p11:        478 Mbits/sec
FreeBSD 14.1-RELEASE-p5:         551 Mbits/sec
OpenBSD 7.5:                     676 Mbits/sec
Linux 6.6.52-0-virt:             941 Mbits/sec

cc

On Wed, Oct 16, 2024 at 8:16 PM void <void@f-m.fm> wrote:

> Hi,
>
> On Tue, Oct 15, 2024 at 09:48:58AM -0400, Cheng Cui wrote:
> >I am not sure if you are using FreeBSD15-CURRENT for testing in VMs.
> >But given your iperf3 test result has retransmissions, if you can try,
> there
> >is a recent VM friendly improvement from TCP congestion control CUBIC.
>
> I did some further testing, also rack v. non-rack.
>
> http://void.f-m.fm.user.fm/speedtests-cubic.txt
> --
>
>

-- 
Best Regards,
Cheng Cui