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 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 -- ------------------- Mike Tancsa, tel +1 519 651 3400 Sentex Communications, mike at sentex.net Providing Internet services since 1994 www.sentex.net Cambridge, Ontario Canada http://www.tancsa.com/
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 acceptanceThis 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 >
On Thu, Aug 01, 2013 at 10:47:40AM -0400, 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 > 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 acceptanceIf you run netstat -naA | grep fffffe001ac76930 you should be able to identify which socket is producing the warning messages. That should give you a better understanding of what is triggering the messages Regards, Gary
On 01.08.2013 21:47, 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 > 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 acceptanceTry "netstat -Lan".