Date: Thu, 01 Aug 2013 23:09:07 +0200 From: Andre Oppermann <andre@freebsd.org> To: Mike Tancsa <mike@sentex.net> Cc: FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org> Subject: Re: Listen queue overflow Message-ID: <51FACE73.90707@freebsd.org> In-Reply-To: <51FA750C.50502@sentex.net> References: <51FA750C.50502@sentex.net>
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On 01.08.2013 16:47, Mike Tancsa wrote: > After upgrading from a RELENG9 kernel from June 18th to July 27th, I am > seeing this odd new message. Is this a new bug, or just a new > diagnostic message ? I am guessing it happened after r253035 ? > > > sonewconn: pcb 0xfffffe001ac76930: Listen queue overflow: 8 already in > queue awaiting acceptance This message tells you that your daemon listening on that protocol control block isn't keeping up with accepting new messages and each time one of these lines appears the kernel had to reject a connection attempt (RST) because of too many connections already waiting in the listen queue. The only unusual thing here is the low listen queue size of only 8 connection attempts. The default kernel value is about 20 times as many. Have you or your application changed it manually? -- Andre > sonewconn: pcb 0xfffffe001ac76930: Listen queue overflow: 8 already in > queue awaiting acceptance > sonewconn: pcb 0xfffffe001ac76930: Listen queue overflow: 8 already in > queue awaiting acceptance > sonewconn: pcb 0xfffffe001ac76930: Listen queue overflow: 8 already in > queue awaiting acceptance > sonewconn: pcb 0xfffffe001ac76930: Listen queue overflow: 8 already in > queue awaiting acceptance > sonewconn: pcb 0xfffffe001ac76930: Listen queue overflow: 8 already in > queue awaiting acceptance > > ---Mike >
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