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Date: Fri, 04 Oct 2013 11:31:43 -0400
From: Adam McDougall <mcdouga9@egr.msu.edu>
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To: freebsd-pf@freebsd.org
Subject: Re: pf deadly slow
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On 10/04/13 11:28, 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)
> 
>> On Fri, Oct 4, 2013 at 9:17 AM, Stephane D'Alu
>> <Stephane.DAlu@insa-lyon.fr <mailto:Stephane.DAlu@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?

If vnet0 has TSO enabled, can you try disabling it?  Possibly with all
other optimizations too.  Example: ifconfig vnet0 -tso