Date: Fri, 22 May 2015 10:21:41 -0500 From: Guy Helmer <guy.helmer@gmail.com> To: Eric Joyner <erj@freebsd.org> Cc: Christopher Forgeron <csforgeron@gmail.com>, FreeBSD Net <freebsd-net@freebsd.org> Subject: Re: FreeBSD 9.3 - Intel X520-SR2 stops passing packets Message-ID: <F545D806-70F7-4B7F-826F-55BDB65BD129@gmail.com> In-Reply-To: <CA%2Bb0zg_0gvmHbVjLyBhA-yiX83ecbDLZz2nmqSLbDwVuXOURDQ@mail.gmail.com> References: <C8B78CF4-184C-4BFE-B848-37A91A3B696B@gmail.com> <CAB2_NwBmpHZZ03wht55=kVHdGk4mVKpFCcmcT=sJ12y7OJSXtA@mail.gmail.com> <BD7871A4-69C2-49EB-89D4-9EB741E2EB2B@gmail.com> <CA%2Bb0zg_0gvmHbVjLyBhA-yiX83ecbDLZz2nmqSLbDwVuXOURDQ@mail.gmail.com>
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> On May 21, 2015, at 6:09 PM, Eric Joyner <erj@freebsd.org> wrote: > > Are there any log messages printed out by the driver? The sysctls don't really look out of the ordinary, other than the number of sub-64 byte packets. Not that I could tell — grep of /var/log/messages and the text from the rotated messages.*.gz logs yielded nothing. Guy > > On Thu, May 21, 2015 at 9:10 AM Guy Helmer <guy.helmer@gmail.com <mailto:guy.helmer@gmail.com>> wrote: > > > On May 21, 2015, at 8:52 AM, Christopher Forgeron <csforgeron@gmail.com <mailto:csforgeron@gmail.com>> wrote: > > > > A few things: > > > > 1) How long before you have this behaviour? > > > > 2) What's the output of 'netstat -m' when you have the problem? > > > > 3) What is your MTU set to, and do you have TSO on or off? > > > > On Thu, May 21, 2015 at 10:33 AM, Guy Helmer <guy.helmer@gmail.com <mailto:guy.helmer@gmail.com> <mailto:guy.helmer@gmail.com <mailto:guy.helmer@gmail.com>>> wrote: > > I’ve noticed that there have been reports of problems with Intel X520-SR2 network interfaces stopping working. I think I’m seeing a similar issue where the 10Gb interfaces stop receiving traffic (they’re being used in promiscuous mode to sniff traffic from a tap). ifconfig shows the interfaces are still active and the links are OK. ifconfig down/up restores activity. I’ve changed hw.intr_storm_threshold=8000 but I couldn’t tell if the interrupt storm threshold had been triggered at the time the interfaces stopped passing traffic. > > It seems to run from hours to days without problems. > > I don’t have the output of “netstat -m” available, but it did not indicate any mbuf or cluster allocation failures. No jumbo clusters (4k, 9k, or 16k) were allocated. > > MTU is 1500. TSO is “on” but would seem to be irrelevant — no packets are transmitted out of these interfaces (verified using “netstat -i”). > > Thanks, > Guy > _______________________________________________ > freebsd-net@freebsd.org <mailto:freebsd-net@freebsd.org> mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net <http://lists.freebsd.org/mailman/listinfo/freebsd-net>; > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org <mailto:freebsd-net-unsubscribe@freebsd.org>"
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