From owner-freebsd-performance@FreeBSD.ORG  Wed Jan 25 13:40:35 2012
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From: Nikolay Denev <ndenev@gmail.com>
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To: Ivan Voras <ivoras@freebsd.org>
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Cc: freebsd-performance@freebsd.org
Subject: Re: Performance problem using Intel X520-DA2
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On Jan 25, 2012, at 1:59 PM, Ivan Voras wrote:

> On 24/01/2012 17:53, Marcin Markowski wrote:
>> On 24.01.2012 14:22, Ivan Voras wrote:
>>>> On Mon, Jan 23, 2012 at 12:20 PM, Marcin
>>>> Markowski<mmarkowski@leon.pl>wrote:
>>>=20
>>>>> (on 9.0 we can see also kernel thread named {ix0 que} using 100% =
CPU),
>>>=20
>>>>> hw.ixgbe.num_queues=3D16
>>>=20
>>> If there really are 16 hardware queues, shouldn't there be 16 kernel
>>> threads for queue processing?
>>=20
>> There are 16 threads, but only one of them consumes 100% CPU and the =
others
>> do not use more than 5% CPU:
>>=20
>> http://pastebin.com/BWDWh8kW
>=20
> You need Jack to confirm it but this looks like a serious problem / =
bottleneck. It just shouldn't be like that (if the test is exactly the =
same).
>=20

Is this by any chance non-IP traffic (or encapsulated in some way).
I remember similar thread : =
http://freebsd.1045724.n5.nabble.com/igb-ixgbe-RSS-RX-queues-for-non-IP-tr=
affic-td4778961.html