virtio problems (was: pf deadly slow)

[Bryan Venteicher]

----- Original Message -----
> Now that I switched from virtio to 82545EM all my networking problems
> disappeared.
> 
> Appart from pf, I had also some other small networking problems that I
> thought were apache/php related, but were in fact due to virtio.
> 
> virtio is clearly the culprit, but I can't say if it is FreeBSD or
> VirtualBox related
> 
> Guest: FreeBSD 9.2 amd64
> Host : FreeBSD 9.2 amd64
> VM   : VirtualBox 4.2.18
> 
> I can provide more information, if you tell me what to look for.
> 
> 

Disable Tx/Rx checksum offload. The current state of the network stack
doesn't work well with forwarding offloaded VirtIO frames.

> 
> On 10/04/13 17:28, Stephane D'Alu wrote:
> > On 10/04/13 16:48, sven falempin wrote:
> >> configure ALTQ (maybe the absence of configurating is not nicely working),
> >> i think freebsd has virtio support ,
> > 
> > Yes, since 9.2 virtio drivers are included in base distribution
> > 
> >>  
> >> i am interested in the result :-)
> > 
> > I switched from virtio to 82545EM (with em driver), and performance are
> > back to normal.
> > 
> > Look like a bug / bad interraction between virtio and pf.
> > (I don't know if VirtualBox as also a part in it)
> > 
> >>  
> >>  
> >> OpenBSD  is currently completly rewriting the queing system
> >> and improving performance.
> >>  
> >>  
> >>
> >>
> >> On Fri, Oct 4, 2013 at 9:17 AM, Stephane D'Alu
> >> <Stephane.DAlu at insa-lyon.fr <mailto:Stephane.DAlu at insa-lyon.fr>> wrote:
> >>
> >>     I'm running FreeBSD 9.2 inside VirtualBox with virtio for the nework
> >>     card. pf is compiled with ALTQ support.
> >>
> >>     My pf.conf file is as follow, which do nearly nothing:
> >>      set skip on lo0
> >>      set skip on vnet0
> >>
> >>     If pf is enabled, bandwith drop by a 1000 factor!
> >>     From 10Mb/s to 4Kb/s
> >>
> >>     Any idea, what's going on?
> >>
> >>
> >>     PS:
> >>     - I have the same kind of configuration FreeBSD 9.2, pf + ALTQ
> >>     and real firewall rules on a non virtualized server and everything
> >>     is fine.
> >>     - I will try to remove ALTQ and use em driver instead, to see if there
> >>     is a performance improvement
> >>
> >>     Sincerly
> >>     --
> >>     Stephane D'Alu -- Ingenieur Recherche
> >>     Laboratoire CITI / INSA-Lyon
> >>     Tel: +33 47243 6483 <tel:%2B33%2047243%206483>
> >>     _______________________________________________
> >>     freebsd-pf at freebsd.org <mailto:freebsd-pf at freebsd.org> mailing list
> >>     http://lists.freebsd.org/mailman/listinfo/freebsd-pf
> >>     To unsubscribe, send any mail to "freebsd-pf-unsubscribe at freebsd.org
> >>     <mailto:freebsd-pf-unsubscribe at freebsd.org>"
> >>
> >>
> >>
> >>
> >> --
> >> ---------------------------------------------------------------------------------------------------------------------
> >> () ascii ribbon campaign - against html e-mail
> >> /\
> > 
> > 
> 
> 
> --
> Stephane D'Alu -- Ingenieur Recherche
> Laboratoire CITI / INSA-Lyon
> Tel: +33 47243 6483
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