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Date: Tue, 02 Jun 2009 18:52:59 +0200
From: Michael <freebsdusb@bindone.de>
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Subject: Re: Bug in igb driver
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Michael wrote:
> Hello,
>
> we encountered problems using igb driver on a Supermicro dual quad-core
> system (X7DWU).
> It features an Intel Gigabit dual port controller (82575).
>
> The IP forwarding performance was extremely bad (5 kb/s up to 50 kb/s)
> until we disabled
> Large Receive Offloading in /etc/sysctl.conf:
> dev.igb.0.enable_lro=0
> dev.igb.1.enable_lro=0
>
> (changing it using ifconfig -lro and down/up the interfaces didn't help).
>
> With the systctl values set as shown above, we get the expected
> performance ob 50-60 MB/s.
> We tested this on 7.1-RELEASE, 7.2-RELEASE and 7-STABLE. Right now we're
> installing
> 8-CURRENT on the machine to see if it makes a difference.
>
> It think it would be worthwhile to list this issue in the 7.2 release
> errata section (that would've
> saved us a significant amount of time :).
>
> Cheers
> Michael
>
>
>
>
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>   
Turns out that 8/CURRENT of today has the same issues.
Is this okay as a bug report, or should I file a PR seperately?