Re: Performance issues with vnet jails + epair + bridge

The patch has no effect at the host if the host is a data receiver.

Also the patch is for the FreeBSD main (15-CURRENT in development).
There is no plan to merge the commit into prior releases, given the code
base has been branched for quite some time.

cc

On Thu, Oct 17, 2024 at 5:49 AM void <void@f-m.fm> wrote:

> On Thu, Oct 17, 2024 at 05:05:41AM -0400, Cheng Cui wrote:
> >My commit is inside the FreeBSD kernel, so you just rebuild the `kernel`,
> >and you don't need to rebuild the `world`.
>
> OK thanks. Would building it the same on the bhyve *host* have an effect?
> I'm asking because you earlier mentioned it's a vm-friendly change.
>
> I can test this if you like. I'm wondering if some changes on the host also
> change the vm throughput. The host is currently using rack but the kernel
> is
> older than your changes. The host has expected throughput for 1GiB ethernet
> right now. Everything in the tests apart from the test target had the
> default
> params for the ethernet interface, so things like TSO are enabled.
>
> How can I apply your commit into a local 14.1-p5 src tree? I think this is
> called 'cherry picking' but I don't really know much about git at all.
> It'd be interesting to test, i think.
> --
>
>

-- 
Best Regards,
Cheng Cui