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Date:      Fri, 25 Apr 2014 13:34:06 +0200
From:      Marek Salwerowicz <marek_sal@wp.pl>
To:        =?ISO-8859-1?Q?Gerrit_K=FChn?= <gerrit.kuehn@aei.mpg.de>
Cc:        freebsd-net@freebsd.org
Subject:   Re: NFS over LAGG / lacp poor performance
Message-ID:  <535A482E.1030106@wp.pl>
In-Reply-To: <20140425113711.e7c7d1c2.gerrit.kuehn@aei.mpg.de>
References:  <535A1354.2040309@wp.pl> <20140425113711.e7c7d1c2.gerrit.kuehn@aei.mpg.de>

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Hello Gerrit,

W dniu 2014-04-25 11:37, Gerrit Kühn pisze:
> On Fri, 25 Apr 2014 09:48:36 +0200 Marek Salwerowicz <marek_sal@wp.pl>
> wrote about NFS over LAGG / lacp poor performance:
>
>
>
> Could you have a look on your system and let me know how your interrupts
> are spread?

For me on storage1 (9.1-RELEASE) it looks like:

> storage1% vmstat
> -i                                                                                                                                                                                            
>
> interrupt                          total       rate
> irq1: atkbd0                          77          0
> irq16: ehci0                    11355459          1
> irq23: ehci1                    26468060          3
> cpu0:timer                     565127221         79
> irq264: mps0                  1905530055        267
> irq265: igb0:que 0            2307223482        323
> irq266: igb0:link                      4          0
> irq267: igb1:que 0             271641638         38
> irq268: igb1:link                      6          0
> irq269: igb2:que 0              91665104         12
> irq270: igb2:link                      6          0
> irq271: igb3:que 0             628139928         88
> irq272: igb3:link                      5          0
> irq273: ahci0                    1579878          0
> cpu1:timer                     283555294         39
> cpu4:timer                     285185117         40
> cpu10:timer                    305482789         42
> cpu3:timer                     239294364         33
> cpu7:timer                     406658435         57
> cpu2:timer                     353421522         49
> cpu8:timer                     437284694         61
> cpu11:timer                    261929365         36
> cpu5:timer                     282975629         39
> cpu6:timer                     248355888         34
> cpu9:timer                     256679915         36
> Total                         9169553935       1287
> marek@storage1:/home/marek%     

But in my case all igb links are aggregated using LACP (lagg0), then
there are 2 vlans over lagg0 (vlan14 and vlan900) and the vlan900 is one
dedicated for NFS
And I don't have more than one queue per interface

Cheers,
Marek

-- 
Marek Salwerowicz



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