Date: Sun, 18 Jan 2015 13:20:02 +0100 From: Harald Schmalzbauer <h.schmalzbauer@omnilan.de> To: FreeBSD Stable <freebsd-stable@freebsd.org> Subject: Re: sonewconn: pcb =?UTF-8?B?MHjigKY6IExpc3RlbiBxdWV1ZSBvdmVyZmxv?= =?UTF-8?B?dyBbV2FzOiBSZTogbGFnZyg4KSBjYXVzZXMgZ2hvc3QgcXVldWUgd2l0aCBpZ2I=?= =?UTF-8?B?KDQpXQ==?= Message-ID: <54BBA4F2.4010904@omnilan.de> In-Reply-To: <54BBA2E3.5070401@omnilan.de> References: <54B962A3.9010308@omnilan.de> <54BBA2E3.5070401@omnilan.de>
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[-- Attachment #1 --] Bezüglich Harald Schmalzbauer's Nachricht vom 18.01.2015 13:11 (localtime): > Bezüglich Harald Schmalzbauer's Nachricht vom 16.01.2015 20:12 > (localtime): >> Hi all, >> >> while investigating a watchdog timeout problem (on FreeBSD-10.1-stable >> r276295) I noticed "ghost" queues consuming interrupts with >> igb(4)[82576] if igb(4) is member of lagg(4) (laggproto loadbalance >> lagghash l2). Mysteriously only sometimes (1 of 2 runs). >> >> Sending machine has only one ssh session open, where I do the following: >> 'dd if=/dev/zero | nc vegashare 3333' (of course on vegashare is a >> listener [nc -l vegashare 3333 > /dev/null]) >> >> I'm transfering 123.5*10^6 Bytes/sec and on the sender, systat reports: >> 2682 igb0:que 0 (1 of 4 queues causes moderate irq load hw.igb.aim=1, >> otherhise it were 16k irqs/s, nothing on the other 3 queues) >> >> But roughly every second run, I see a another queue consuming much more >> irqs/s while transferring exactly the same at exactly the same speed: >> 7740 igb0:que 0 >> 2640 igb0:que 3 >> >> Here's again one queue with 2.6k irqs/s, but another one with 7.7k >> irqs/s which I can't understand what this is doing. It's useless for >> sure, because with only one queue I get the same payload transported on >> the same hardware with the same speed and 3 queues idle… > I noticed another mysterium, at least for me. I'd highly appreciate if > somebody could give me a hint how I can understand the following lines > > sonewconn: pcb 0xfffff801b85907a8: Listen queue overflow: 151 already in > queue awaiting acceptance (1 occurrences) > sonewconn: pcb 0xfffff801b85907a8: Listen queue overflow: 151 already in > queue awaiting acceptance (220 occurrences) > > I have never seen them before and I guess it's related to my other queue > mysterium. Sorry, I should have asked someone to type that into a internet search portal for me before posting here ;-) The pcb address is a unix domain socket, so completely unrelated to my igb(4) queue mysterium! Please excuse, thanks, -Harry [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (FreeBSD) iEYEARECAAYFAlS7pPIACgkQLDqVQ9VXb8jxhACeJZXo3YoMEhNjt0rlgZEI6UM1 FvMAoKW0H2/BvKuq5N5h/aec0CjYN43I =xfS/ -----END PGP SIGNATURE-----help
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