Date: Mon, 25 Feb 2013 12:38:05 -0600 From: "Christopher D. Harrison" <harrison@biostat.wisc.edu> To: Jack Vogel <jfvogel@gmail.com> Cc: freebsd-net@freebsd.org Subject: Re: igb network lockups Message-ID: <512BAF8D.7080308@biostat.wisc.edu> In-Reply-To: <CAFOYbckDFJKRip%2Be=a%2B_JPHhk%2BHbAikRBK0dHEBDDEgdsZT6sw@mail.gmail.com> References: <512BAA60.3060703@biostat.wisc.edu> <CAFOYbckDFJKRip%2Be=a%2B_JPHhk%2BHbAikRBK0dHEBDDEgdsZT6sw@mail.gmail.com>
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Sure,
The problem appears on both systems running with ALTQ and vanilla.
-C
On 02/25/13 12:29, Jack Vogel wrote:
> I've not heard of this problem, but I think most users do not use
> ALTQ, and we (Intel) do not
> test using it. Can it be eliminated from the equation?
>
> Jack
>
>
> On Mon, Feb 25, 2013 at 10:16 AM, Christopher D. Harrison
> <harrison@biostat.wisc.edu <mailto:harrison@biostat.wisc.edu>> wrote:
>
> I recently have been experiencing network "freezes" and network
> "lockups" on our Freebsd 9.1 systems which are running zfs and nfs
> file servers.
> I upgraded from 9.0 to 9.1 about 2 months ago and we have been
> having issues with almost bi-monthly. The issue manifests in the
> system becomes unresponsive to any/all nfs clients. The system
> is not resource bound as our I/O is low to disk and our network is
> usually in the 20mbit/40mbit range. We do notice a correlation
> between temporary i/o spikes and network freezes but not enough to
> send our system in to "lockup" mode for the next 5min. Currently
> we have 4 igb nics in 2 aggr's with 8 queue's per nic and our
> dev.igb reports:
>
> dev.igb.3.%desc: Intel(R) PRO/1000 Network Connection version - 2.3.4
>
> I am almost certain the problem is with the ibg driver as a friend
> is also experiencing the same problem with the same intel igb nic.
> He has addressed the issue by restarting the network using netif
> on his systems. According to my friend, once the network
> interfaces get cleared, everything comes back and starts working
> as expected.
>
> I have noticed an issue with the igb driver and I was looking for
> thoughts on how to help address this problem.
> http://freebsd.1045724.n5.nabble.com/em-igb-if-transmit-drbr-and-ALTQ-td5760338.html
>
> Thoughts/Ideas are greatly appreciated!!!
>
> -C
>
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