Date: Thu, 08 Jan 2015 11:22:35 +0100 From: Harald Schmalzbauer <h.schmalzbauer@omnilan.de> To: FreeBSD Stable <freebsd-stable@freebsd.org> Subject: Re: igb(4) watchdog timeout, lagg(4) fails Message-ID: <54AE5A6B.7040601@omnilan.de> In-Reply-To: <54AE565D.50208@omnilan.de> References: <54ACC6A2.1050400@omnilan.de> <54AE565D.50208@omnilan.de>
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[-- Attachment #1 --] Bezüglich Harald Schmalzbauer's Nachricht vom 08.01.2015 11:05 (localtime): > Bezüglich Harry Schmalzbauer's Nachricht vom 07.01.2015 06:39 (localtime): >> Hello, >> >> recently I upgraded one server from 9.1 to 10.1. There are two 82576 >> (one port of two Intel ET Dual-Port GbE [kawela]), driven by igb(4). >> I've never seen any watchdog timeout with FreeBSD-9.1 but suddenly (with >> 10-stable) I see: >> igb0: Watchdog timeout -- resetting >> igb0: Queue(0) tdh = 2974, hw tdt = 2973 >> igb0: TX(0) desc avail = 0,Next TX to Clean = 0 >> >> My biggest problem is, that lagg(4) doesn't detect the problem with >> igb0. It's configured with "lagghash l2' and most connections were >> interupted until I manually do 'ifconfig igb0 down'. Then lagg does it's >> job and connectivity was restored via the remaining igb1. >> >> Is there a way to auto-if-down an interface which suffers from watchdog >> timeouts? And any way to really reset it without rebooting the machine? > igb wathchdog timeout happened again :-( ~48 hours after the last with > very moderate-to-low avarage traffic. > > This time I could fetch dev.igb sysctls before igb0 was reset by watchdog > It's showing strange irq load: While systat tells: 3 igb1:que 0 1619 igb1:que 1 3 igb1:que 2 1 igb1:que 3 sysctl dev.igb tells: dev.igb.1.queue0.interrupt_rate: 43478 dev.igb.1.queue1.interrupt_rate: 76923 dev.igb.1.queue2.interrupt_rate: 111111 dev.igb.1.queue3.interrupt_rate: 90909 How do I have to understand sysctl's interrupt_rate value? Thanks, -Harry [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (FreeBSD) iEYEARECAAYFAlSuWmwACgkQLDqVQ9VXb8g7mACgnCnyEHbMjfEULi91SjQq7ORR XS0AoKB0pUpVvqQt+i2TU70QSRfyMtUA =iVf7 -----END PGP SIGNATURE-----
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