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From: Fabien Thomas <fabien.thomas@netasq.com>
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To: Eugene Grosbein <egrosbein@rdtc.ru>
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Cc: Jack F Vogel <jfv@freebsd.org>, net@freebsd.org
Subject: Re: lagg/lacp poor traffic distribution
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On Dec 21, 2010, at 3:48 PM, Eugene Grosbein wrote:

> On 21.12.2010 20:41, Fabien Thomas wrote:
>=20
>>>>> 1. Is it a bug or design problem?
>>>>=20
>>>> How many queues have you with igb? If it's one it will explain why =
the flowid is bad for load balancing with lagg.
>>>=20
>>> How do I know? I've read igb(4) manual page and found no words
>> vmstat -i will show the queue (intr for the queue) normally it's the =
number of CPU available.
>=20
> # vmstat -i
> interrupt                          total       rate
> irq5: uart2                            8          0
> irq18: ehci0 uhci5+                    2          0
> irq19: uhci2 uhci4+                 2182          0
> irq23: uhci3 ehci1                   124          0
> cpu0: timer                     39576224       1993
> irq256: em0:rx 0               115571349       5822
> irq257: em0:tx 0               136632905       6883
> irq259: em1:rx 0               115829181       5835
> irq260: em1:tx 0               138838991       6994
> irq262: igb0:que 0             157354922       7927
> irq263: igb0:que 1                577369         29
> irq264: igb0:que 2                280207         14
> irq265: igb0:que 3                241826         12
> irq266: igb0:link                      2          0
> irq267: igb1:que 0             164620363       8293
> irq268: igb1:que 1                238678         12
> irq269: igb1:que 2                248478         12
> irq270: igb1:que 3                762453         38
> irq271: igb1:link                      3          0
> cpu2: timer                     39576052       1993
> cpu3: timer                     39576095       1993
> cpu1: timer                     39575913       1993
> Total                          989503327      49849
>=20
> It seems I have four queues per igb card but only one of them works?

Yes.

Jack will certainly confirm but it seems that RSS hash does not seems to =
take vlan in account and default to queue0 ?


>=20
> Eugene Grosbein