Enabling VIMAGE by default for FreeBSD 11?

[Olivier Cochard-Labbé]

On Tue, Oct 14, 2014 at 8:20 AM, Craig Rodrigues <rodrigc at freebsd.org>
wrote:

> On Sat, Oct 11, 2014 at 1:20 PM, Alexander V. Chernikov <melifaro at ipfw.ru>
> wrote:
>
> >
> > On 11 Oct 2014, at 21:58, Craig Rodrigues <rodrigc at FreeBSD.org> wrote:
> >
> > > Hi,
> > >
> > > What action items are left to enable VIMAGE by default for FreeBSD 11?
> > Are there any tests results showing performance implications on different
> > network-related workloads?
> >
> >
> Alexander,
>
> Do you have a testbed where you could run a quick network test for
> non-virtualized workload:
>    -> CURRENT without VIMAGE in kernel config
>    -> CURRENT with VIMAGE in kernel config
>
> and provide some results ?
>

I can use my forwarding/firewalling 10Giga lab for testing VIMAGE impact.
Here are my ministat results (smallest packet size, value in
packet-per-second, about 2000 flows).
=> I didn't see lot's of performance impact with VIMAGE option added in
kernel.

Forwarding difference :
x forwarding.r272978-VIMAGE
+ forwarding.r272978
+----------------------------------------------------------------------+
|x                     +x       x     ++        +     x        x      +|
|         |_____________________M__A________________________|          |
|                         |____________M____A________________|         |
+----------------------------------------------------------------------+
    N           Min           Max        Median           Avg        Stddev
x   5       1929165       1998339       1963904     1966801.4     27506.256
+   5       1953943       2005868       1971503       1976523     19087.721
No difference proven at 95.0% confidence

ipfw-statefull difference:
x ipfw-statefull.r272978-VIMAGE
+ ipfw-statefull.r272978
+----------------------------------------------------------------------+
| x x      * *       +        x+                                      +|
||_________MA__________|                                               |
|    |_______________M_______A_______________________|                 |
+----------------------------------------------------------------------+
    N           Min           Max        Median           Avg        Stddev
x   5       1490042       1531750       1503590       1505175     16403.596
+   5       1502719       1589778       1517320     1529871.8     35404.181
No difference proven at 95.0% confidence


pf-statefull difference:
x pf-statefull.r272978-VIMAGE
+ pf-statefull.r272978
+----------------------------------------------------------------------+
|x                +    +    x        x   *+        x                  +|
|            |__________________A____M_____________|                   |
|                 |____________________A_M_________________|           |
+----------------------------------------------------------------------+
    N           Min           Max        Median           Avg        Stddev
x   5       1315594       1341130       1334215       1331310      9769.922
+   5       1324108       1351078       1336257     1335044.2     10562.448
No difference proven at 95.0% confidence

Regards