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Date:      Wed, 04 Jul 2012 13:49:38 +0200
From:      Damien Fleuriot <ml@my.gd>
To:        freebsd-net@freebsd.org
Subject:   Re: lagg speed trouble
Message-ID:  <4FF42DD2.8080608@my.gd>
In-Reply-To: <CABj7HZ8dnbpwhgpQ9pE=M2xJh_LFp2oYdPqvXke0GF%2B4rt7sgg@mail.gmail.com>
References:  <CABj7HZ8dnbpwhgpQ9pE=M2xJh_LFp2oYdPqvXke0GF%2B4rt7sgg@mail.gmail.com>

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On 7/4/12 1:30 PM, Vyacheslav Kulikovskyy wrote:
> i have sever with two 1G links (em) aggregated by lagg0
> 
> after 1700Megabits i have collisions/errors on lagg0 port, but not on em0
> or em1
> 
> I'm using nginx in own CDN. and server don't limited my mbufs, irq, or
> anything else.. only lagg0 errors (
> 
> netstat -w 1 -I em0
>             input          (em0)           output
>    packets  errs idrops      bytes    packets  errs      bytes colls
>      43871     0     0    2726437      38304     0  108063773     0
>      43417     0     0    2700512      39084     0  109215143     0
>      43474     0     0    2701344      39303     0  108373730     0
>      43755     0     0    2717689      39023     0  108766820     0
>      43960     0     0    2733462      39476     0  109030307     0
>      44675     0     0    2776654      38708     0  107313936     0
>      44082     0     0    2734293      39089     0  108897889     0
> 
> netstat -w 1 -I em1
>             input          (em1)           output
>    packets  errs idrops      bytes    packets  errs      bytes colls
>      43754     0     0    2722677      38943     0  108504216     0
>      44561     0     0    2778854      39107     0  108418763     0
>      44773     0     0    2784606      39006     0  108799148     0
>      45134     0     0    2814622      39137     0  108557494     0
>      44604     0     0    2770745      38998     0  107942619     0
>      44813     0     0    2789991      38901     0  108438247     0
> 
> netstat -w 1 -I lagg0
>             input        (lagg0)           output
>    packets  errs idrops      bytes    packets  errs      bytes colls
>      87964     0     0    5474019      78172  1964  222220549     0
>      88842     0     0    5533987      78852  1811  222578109     0
>      87687     0     0    5454717      77279  2416  222286391     0
>      87995     0     0    5471653      78090  2040  223488046     0
>      88314     0     0    5493348      78495  1994  222548964     0
>      88411     0     0    5502818      78228  1949  222214374     0
> 
> how i can get full link speed on this server?
> 


Do the ports on the switch report any layer 2 error, by chance ?



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