From owner-freebsd-net@FreeBSD.ORG Mon Feb 25 18:45:09 2013 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 41FBD951 for ; Mon, 25 Feb 2013 18:45:09 +0000 (UTC) (envelope-from jfvogel@gmail.com) Received: from mail-ve0-f180.google.com (mail-ve0-f180.google.com [209.85.128.180]) by mx1.freebsd.org (Postfix) with ESMTP id CFF6AE79 for ; Mon, 25 Feb 2013 18:45:08 +0000 (UTC) Received: by mail-ve0-f180.google.com with SMTP id jx10so2434650veb.25 for ; Mon, 25 Feb 2013 10:45:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:x-received:in-reply-to:references:date:message-id :subject:from:to:cc:content-type; bh=LaH8LFSmnBQ+30w1q1doUY7bhTnUs8VpLYXRx0IpxZo=; b=d0zfdNArlLouzBjASNeW5a8VzI9fc7UpYs5+WdkdW00nJevg9wX+emdMZF7C1tQAX3 cCVr1G9ORC3DnIUf06EbAmaPlwBU7qf21cKzJrSkPEI40hZD0R6l9HayIL3Xr2Xpx6za UwDx0QPwKWkcJbuxxE+5h94S5VwN0OkGuF42LRvazpN2lBr6SqNbc1UPnWf6HQMocV9X 0QNv/NjMdk3Tjypf0AsU6rcjMx+Q63En6GU67wmmWauJI1dTE6PibfAWU3nmAVtVy1zQ xJWT2m6H0/DcdENUHjYKnhDvYE8GK04l5rB4nzvOykO+4EX7M1DmRXbwb8J/vrhyleXj F6mQ== MIME-Version: 1.0 X-Received: by 10.220.205.195 with SMTP id fr3mr10240365vcb.6.1361817902598; Mon, 25 Feb 2013 10:45:02 -0800 (PST) Received: by 10.220.191.132 with HTTP; Mon, 25 Feb 2013 10:45:02 -0800 (PST) In-Reply-To: <512BAF8D.7080308@biostat.wisc.edu> References: <512BAA60.3060703@biostat.wisc.edu> <512BAF8D.7080308@biostat.wisc.edu> Date: Mon, 25 Feb 2013 10:45:02 -0800 Message-ID: Subject: Re: igb network lockups From: Jack Vogel To: "Christopher D. Harrison" Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.14 Cc: freebsd-net@freebsd.org X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 25 Feb 2013 18:45:09 -0000 Have you done any poking around, looking at stats to determine why the hangs? For instance, might your mbuf pool be depleted? Some other network resource perhaps? Jack On Mon, Feb 25, 2013 at 10:38 AM, Christopher D. Harrison < harrison@biostat.wisc.edu> wrote: > 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> 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 >> >> _______________________________________________ >> freebsd-net@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-net >> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" >> > > >