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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=0A=0A--- On Tue, 11/27/12, Zaphod Beeblebrox <zbeeble@gmail.com> wrote:=0A= =0A> From: Zaphod Beeblebrox <zbeeble@gmail.com>=0A> Subject: Re: 9.1-RC3 I= GB dropping connections.=0A> To: "Andre Oppermann" <andre@freebsd.org>=0A> = Cc: "FreeBSD Hackers" <freebsd-hackers@freebsd.org>, "FreeBSD Stable" <free= bsd-stable@freebsd.org>, "FreeBSD Net" <freebsd-net@freebsd.org>=0A> Date: = Tuesday, November 27, 2012, 7:04 PM=0A> To Jack Vogel's comment, this probl= em=0A> only seems to occur on systems=0A> that are exceedingly lightly load= ed (in this case, not yet=0A> in=0A> production and I'm the only one using = it).=0A> =0A> On Tue, Nov 27, 2012 at 6:21 PM, Andre Oppermann <andre@freeb= sd.org>=0A> wrote:=0A> =0A> > r243570 in CURRENT should likely fix this iss= ue.=A0=0A> It's only 27 hours old=0A> > and hasn't been MFC'd yet.=0A> =0A>= I'm not sure this addresses what I'm seeing.=A0 It's a=0A> pause the the= =0A> traffic in the shell that is "fixed" by causing some traffic=0A> on th= e=0A> return channel (watching for the pause --- and then hitting=0A> enter= a=0A> few times seems to fix it).=A0 I'd expect that TCP=0A> retransmissio= n should=0A> take care of this regularly=A0 ... but in this case, it=0A> do= esn't... for=0A> whatever reason ...=0A=0AThe symptoms point to something h= aving to do with kicking=0Athe start/xmit queue. You might want to check th= e if_snd queues in=0Athe timer routine.=0A=0A=0A
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