netmap in GENERIC, by default, on HEAD

[Evandro Nunes]

On Wed, Nov 5, 2014 at 1:52 PM, Andrey V. Elsukov <bu7cher at yandex.ru> wrote:

> On 05.11.2014 18:39, George Neville-Neil wrote:
> > Howdy,
> >
> > Last night (Pacific Time) I committed a change so that GENERIC, on HEAD
> > has the netmap
> > device enabled.  This is to increase the breadth of our testing of that
> > feature prior
> > to the release of FreeBSD 11.
> >
> > In two weeks I will enable IPSec by default, again in preparation for 11.
>
> Hi,
>
> recently we did some IP forwarding tests and the GENERIC kernel is
> several times faster than GENERIC+IPSEC. Even when IPSEC has no SA.
>
> I didn't do test on vanilla kernel, but our kernel is able forward
> IPv4/IPv6 on rate close to 8.6 Mpps. The same kernel compiled with IPSEC
> can forward only 180 kpps. I think this problem should be solved before
> enabling it in GENERIC.
>

this forward rate you mention is related to netmap? or usual
forwarding/fastforwarding? this is a huge number, do you mind sharing your
dmesg output and top -PSH output so I can check for interrupt CPU usage and
other relevant stuff?

thank you