https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=219655
Bug ID: 219655
Summary: TCP Connection Limit Error - sonewconn: Listen queue
overflow
Product: Base System
Version: 11.0-RELEASE
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: freebsd-bugs@FreeBSD.org
Reporter: john....@gmail.com
I'm currently running FreeNas 11 RC1. I've edited the tunables for this item
kern.ipc.soacceptqueue to allow for 2048 connections, but it doesn't propagate
to the jails on my system. Below is the error I received saying the listen
queue is full.
May 19 18:43:24 maverick kernel: sonewconn: pcb 0xfffff8035bef6740: Listen
queue overflow: 193 already in queue awaiting acceptance (138 occurrences)
May 19 19:02:16 maverick kernel: sonewconn: pcb 0xfffff8035bef6740: Listen
queue overflow: 193 already in queue awaiting acceptance (200 occurrences)
May 19 19:03:17 maverick kernel: sonewconn: pcb 0xfffff8035bef6740: Listen
queue overflow: 193 already in queue awaiting acceptance (209 occurrences)
May 19 19:04:17 maverick kernel: sonewconn: pcb 0xfffff8035bef6740: Listen
queue overflow: 193 already in queue awaiting acceptance (199 occurrences)
May 19 19:05:17 maverick kernel: sonewconn: pcb 0xfffff8035bef6740: Listen
queue overflow: 193 already in queue awaiting acceptance (202 occurrences)
Here are the Netstat outputs from my main FreeNas system:
tcp4 0/0/2048 127.0.0.1.8542
tcp4 0/0/2048 127.0.0.1.8600
tcp4 0/0/2048 127.0.0.1.8500
tcp4 0/0/2048 127.0.0.1.8400
And the output from Netstat for my jail:
tcp4 0/0/128 192.168.0.20.12348
tcp6 0/0/128 *.51413
tcp4 0/0/128 *.51413
tcp4 0/0/128 *.9091
If I run sysctl kern.ipc.soacceptqueue in the jail it shows the following:
# sysctl kern.ipc.soacceptqueue
kern.ipc.soacceptqueue: 2048
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