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Date:      Wed, 13 May 2009 20:38:41 -0700
From:      Kip Macy <kmacy@freebsd.org>
To:        Pieter de Goeje <pieter@degoeje.nl>
Cc:        Mel Flynn <mel.flynn+fbsd.current@mailing.thruhere.net>, freebsd-current@freebsd.org
Subject:   Re: em(4) outgoing statistics broken (Was: Re: Statistics collection for TX no longer works)
Message-ID:  <3c1674c90905132038q3bee11c2n92317c4a482543e9@mail.gmail.com>
In-Reply-To: <200904300003.02174.pieter@degoeje.nl>
References:  <200904230627.16745.mel.flynn%2Bfbsd.current@mailing.thruhere.net> <200904290729.21239.mel.flynn%2Bfbsd.current@mailing.thruhere.net> <200904291416.41027.pieter@degoeje.nl> <200904300003.02174.pieter@degoeje.nl>

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Please update to 192081 and try again. We weren't updating stats when
we bypassed the buf_ring on transmit.

Cheers,
Kip


On Wed, Apr 29, 2009 at 3:03 PM, Pieter de Goeje <pieter@degoeje.nl> wrote:
> On Wednesday 29 April 2009 14:16:40 Pieter de Goeje wrote:
>> On Wednesday 29 April 2009 07:29:20 Mel Flynn wrote:
>> > Still happens with a kernel built last Saturday, however I noticed
>> > outgoing statistics works with lo0. No other network card available at
>> > the moment, so I'm enclined to think it's em. Anybody else seeing this?
>>
>> I'm seeing this too. Running -CURRENT/i386 w/ if_em interface. I can try
>> another interface when I'm back from work.
>
> If_re reports outgoing bytes fine.
>
> When I pump a lot of data through em, it suddenly starts reporting again:
>            input        (Total)           output
>   packets  errs      bytes    packets  errs      bytes colls
>      7000     0     462422      11165     0   16402742     0
>     35243     0    2326924      56544     0   85616700     0
>     35087     0    2316711      56251     0   85142818     0
>     35003     0    2310949      56209     0   85101940     0
>     35075     0    2315945      56259     0   85185210     0
>     35032     0    2312572      56253     0   85138276     0
>     34978     0    2308995      56225     0   85086800     0
>     35220     0    2323994      56264     0   85151902     0
>     35097     0    2317256      56324     0   85236686     0
>     34992     0    2309916      56225     0   85121622     0
>     34912     0    2304860      56255     0   85185210     0
>
> At half the data rate (slightly more than 300mbit/s):
>            input        (Total)           output
>   packets  errs      bytes    packets  errs      bytes colls
>      1267     0      84924       1935     0    2697108     0
>      1393     0      95557       2095     0          0     0
>     11177     0     755904      17628     0          0     0
>     14305     0     959073      23717     0          0     0
>      9836     0     662341      16108     0          0     0
>      9652     0     648353      15892     0          0     0
>     25137     0    1694180      41108     0          0     0
>     19119     0    1286252      31490     0          0     0
>     26476     0    1780519      43808     0          0     0
>
> - Pieter
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-- 
When bad men combine, the good must associate; else they will fall one
by one, an unpitied sacrifice in a contemptible struggle.

    Edmund Burke


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