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Date:      Tue, 11 Apr 2017 09:13:19 -0600
From:      Sean Bruno <sbruno@freebsd.org>
To:        freebsd-net@freebsd.org
Subject:   Re: interface down, console output: igb3: TX(7) desc avail = 41, pidx = 308
Message-ID:  <87a6b7f7-5f4f-6d5b-11a2-a006944a9b39@freebsd.org>
In-Reply-To: <CAOc73CCJNUMPosg7grrgJVcGX1W8N9fz1kvEkaC3NtfR-Y_cmg@mail.gmail.com>
References:  <CAOc73CCJNUMPosg7grrgJVcGX1W8N9fz1kvEkaC3NtfR-Y_cmg@mail.gmail.com>

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From: Sean Bruno <sbruno@freebsd.org>
To: freebsd-net@freebsd.org
Message-ID: <87a6b7f7-5f4f-6d5b-11a2-a006944a9b39@freebsd.org>
Subject: Re: interface down, console output: igb3: TX(7) desc avail = 41, pidx
 = 308
References: <CAOc73CCJNUMPosg7grrgJVcGX1W8N9fz1kvEkaC3NtfR-Y_cmg@mail.gmail.com>
In-Reply-To: <CAOc73CCJNUMPosg7grrgJVcGX1W8N9fz1kvEkaC3NtfR-Y_cmg@mail.gmail.com>

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On 03/24/17 19:33, Ben Woods wrote:
> Morning!
>=20
> Since my recent update from FreeBSD12-current r313908 to r315466, I hav=
e
> noticed some strange behaviour with one of my network interfaces.
>=20
> The interface seems to work fine for a day or so, but on a number of
> occasions I have found it to be down, and constantly outputting the
> following message to the console every few seconds:
> igb3: TX(7) desc avail =3D 41, pidx =3D 308
> igb3: TX(7) desc avail =3D 41, pidx =3D 308
> igb3: TX(7) desc avail =3D 41, pidx =3D 308
> ...
>=20
> The problem is quickly worked around by issuing the following commands:=

> # service netif stop igb3
> # service netif start igb3
>=20
> Details of this particular network interface card:
> $ pciconf -lv | grep igb3 -A4
> igb3@pci0:0:20:1: class=3D0x020000 card=3D0x1f418086 chip=3D0x1f418086 =
rev=3D0x03
> hdr=3D0x00
>     vendor     =3D 'Intel Corporation'
>     device     =3D 'Ethernet Connection I354'
>     class       =3D network
>     subclass  =3D ethernet
>=20
> Any ideas what this could be, or how to investigate further?
>=20
> Regards,
> Ben
>=20
> --
> From: Benjamin Woods
> woodsb02@gmail.com
> _______________________________________________
> freebsd-net@freebsd.org mailing list
> https://lists.freebsd.org/mailman/listinfo/freebsd-net
> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
>=20


Ben:

What kind of workload is this machine processing?  I'd like to try and
duplicate this failure if possible.

sean


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