Date: Tue, 27 Nov 2012 18:36:11 -0800 (PST) From: Barney Cordoba <barney_cordoba@yahoo.com> To: Andre Oppermann <andre@freebsd.org>, Zaphod Beeblebrox <zbeeble@gmail.com> Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org>, FreeBSD Stable <freebsd-stable@freebsd.org>, FreeBSD Net <freebsd-net@freebsd.org> Subject: Re: 9.1-RC3 IGB dropping connections. Message-ID: <1354070171.39734.YahooMailClassic@web121603.mail.ne1.yahoo.com> In-Reply-To: <CACpH0MdEqKQwECCztYA6XrSpcq0REXPGtiS7pO5UY_3kM=keug@mail.gmail.com>
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--- On Tue, 11/27/12, Zaphod Beeblebrox <zbeeble@gmail.com> wrote: > From: Zaphod Beeblebrox <zbeeble@gmail.com> > Subject: Re: 9.1-RC3 IGB dropping connections. > To: "Andre Oppermann" <andre@freebsd.org> > Cc: "FreeBSD Hackers" <freebsd-hackers@freebsd.org>, "FreeBSD Stable" <freebsd-stable@freebsd.org>, "FreeBSD Net" <freebsd-net@freebsd.org> > Date: Tuesday, November 27, 2012, 7:04 PM > To Jack Vogel's comment, this problem > only seems to occur on systems > that are exceedingly lightly loaded (in this case, not yet > in > production and I'm the only one using it). > > On Tue, Nov 27, 2012 at 6:21 PM, Andre Oppermann <andre@freebsd.org> > wrote: > > > r243570 in CURRENT should likely fix this issue. > It's only 27 hours old > > and hasn't been MFC'd yet. > > I'm not sure this addresses what I'm seeing. It's a > pause the the > traffic in the shell that is "fixed" by causing some traffic > on the > return channel (watching for the pause --- and then hitting > enter a > few times seems to fix it). I'd expect that TCP > retransmission should > take care of this regularly ... but in this case, it > doesn't... for > whatever reason ... The symptoms point to something having to do with kicking the start/xmit queue. You might want to check the if_snd queues in the timer routine.
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