[Bug 209471] Listen queue overflow due to too many sockets stuck in CLOSED state

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Mon May 16 20:26:31 UTC 2016


--- Comment #9 from Robert Blayzor <rblayzor at 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 check.
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:


Probably will do nothing, but need to try something at this point..

You are receiving this mail because:
You are on the CC list for the bug.

More information about the freebsd-amd64 mailing list