Date: Mon, 16 May 2016 20:26:31 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-net@FreeBSD.org Subject: [Bug 209471] Listen queue overflow due to too many sockets stuck in CLOSED state Message-ID: <bug-209471-2472-BvlooqMNBA@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-209471-2472@https.bugs.freebsd.org/bugzilla/> References: <bug-209471-2472@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D209471 --- Comment #9 from Robert Blayzor <rblayzor@inoc.net> --- When I notice this problem happen, almost all of the connections stuck in "CLOSED" seem to be 95-99% from the F5 load balancer doing a TCP health che= ck. All of the traffic between the servers and the F5 use IPv6 addresses. I did notice this time when two Apache 2.4 servers croaked with this problem that IPv4 connections were stalled out as well... I just tried adding two sysctl knobs: net.inet.tcp.drop_synfin=3D1 net.inet.tcp.nolocaltimewait=3D1 Probably will do nothing, but need to try something at this point.. --=20 You are receiving this mail because: You are the assignee for the bug.=
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