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Message-ID: <497F6257.4070101@krogh.cc> Date: Tue, 27 Jan 2009 20:36:55 +0100 From: Jesper Krogh <jesper@...gh.cc> To: "Brandeburg, Jesse" <jesse.brandeburg@...el.com> CC: Greg KH <gregkh@...e.de>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, "e1000-devel@...ts.sourceforge.net" <e1000-devel@...ts.sourceforge.net> Subject: Re: Linux 2.6.27.13 Brandeburg, Jesse wrote: > Greg KH wrote: >> On Mon, Jan 26, 2009 at 09:01:36PM +0100, Jesper Krogh wrote: >>> Greg KH wrote: >>>> We (the -stable team) are announcing the release of the 2.6.27.13 >>>> kernel. It contains a wide range of bugfixes, and all users of the >>>> 2.6.27 kernel series are strongly encouraged to upgrade. >>>> I'll also be replying to this message with a copy of the patch >>>> between >>>> 2.6.27.12 and 2.6.27.13 >>> Hi. >>> >>> I'm getting some e1000 noise on a 2.6.27.6, I search the log up to >>> .13 but couldn't find any log messsage that looked like it fixed it. >>> >>> >>> [862734.501786] ------------[ cut here ]------------ >>> [862734.501793] WARNING: at net/sched/sch_generic.c:219 >>> dev_watchdog+0x1f8/0x210() [862734.501795] NETDEV WATCHDOG: eth0 >>> (e1000): transmit timed out >> I've been getting a lot of reports about this as well. Did it show up >> in 2.6.27.6? >> >> Netdev developers, any ideas of what would be causing this? > > no immediate idea, but a quick test to help isolate which functionality > could be causing problems is to disable TSO on all four interfaces using > ethtool. > > It could be that GSO is somehow playing into this as well, but I don't > know why (you could disable it with ethtool too). > > It could be unrelated but I've noticed that TCP window size can grow much > larger now than it used to (especially talking to LRO enabled clients) > and this might cause some kind of an overflow in the TCP transmit > offloading hardware in the e1000 parts. > > >>> Complete dmesg here: >>> http://krogh.cc/~jesper/dmesg-2.6.27.6.txt >>> >>> The system is running with bonded interfaces with (lspci output) >>> 06:01.0 Ethernet controller: Intel Corporation 82546EB Gigabit >>> Ethernet Controller (Copper) (rev 03) 06:01.1 Ethernet controller: >>> Intel Corporation 82546EB Gigabit Ethernet Controller (Copper) (rev >>> 03) 06:02.0 Ethernet controller: Intel Corporation 82546EB Gigabit >>> Ethernet Controller (Copper) (rev 03) 06:02.1 Ethernet controller: >>> Intel Corporation 82546EB Gigabit Ethernet Controller (Copper) (rev >>> 03) >>> >>> The system is still "fully functional", and I havent notiched >>> anything wrong, but there sure is a lot of link ups and downs on >>> that bond. > > in your log I saw one tx timeout for each interface, one first one by itself > and then several more all within a few minutes, but then no more for > a really long time. > > My first reaction is to ask you what test you're running, and ask you to > run the e1000_dump code (see google) to dump the tx descriptor rings at > the time of failure. > > I can get you that code with updates if you're willing to test, but > it might take a couple of days. I would love to have it at hand, but it is a production system, so it'll be upgraded to 2.6.27.latest at next reboot. So It should be working with that one. Jesper -- Jesper -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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