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Date: Fri, 14 Mar 2008 13:14:40 +0100
From: Giulio Ferro <auryn@zirakzigil.org>
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Cc: freebsd-net@freebsd.org, Andrew Thompson <thompsa@freebsd.org>
Subject: Re: VLAN trunking and fragmentation
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Giulio Ferro wrote:
> That's it!
> Now seems to work properly, the problem then is with hardware tagging.
>
> My question now is: can I use vlans without htag in a complex system with
> heavy traffic without a significant performance loss? If not, how much 
> will it
> take to fix the issue with the driver?
>


There's seems to be another problem now.

If I send flood pings to the other host with big packets (say 2000 
bytes) it works, but one
packet out of 4 or 5 takes a huge time to round-trip (about 1000ms), 
whereas the rest
of the packets have a reasonable 0.2 ms average...


I fear this may lead to unacceptable performance for real-time protocols 
(ie voip) in a
production environment.

Do you think the problem is localized in the "re" driver? If so I could 
just change the
network interface and be done with that. (In production I can use bge 
cards).


Thanks again.