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Date:      Wed, 04 Dec 2019 17:04:36 +0000
From:      bugzilla-noreply@freebsd.org
To:        net@FreeBSD.org
Subject:   [Bug 209471] Listen queue overflow due to too many sockets stuck in CLOSED state
Message-ID:  <bug-209471-7501-x0YkDH1uel@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-209471-7501@https.bugs.freebsd.org/bugzilla/>
References:  <bug-209471-7501@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D209471

kestas <bsd@zuvis.mooo.com> changed:

           What    |Removed                     |Added
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                 CC|                            |bsd@zuvis.mooo.com

--- Comment #23 from kestas <bsd@zuvis.mooo.com> ---
I see [likely] the same issue on 12.0-RELEASE-p8 amd64:

Dec  3 13:46:38 jail kernel: sonewconn: pcb 0xfffff8011b2211e8: Listen queue
overflow: 193 already in queue awaiting acceptance (26 occurrences)
Dec  3 13:47:43 jail kernel: sonewconn: pcb 0xfffff8011b2211e8: Listen queue
overflow: 193 already in queue awaiting acceptance (12 occurrences)
Dec  3 13:49:11 jail kernel: sonewconn: pcb 0xfffff8011b2211e8: Listen queue
overflow: 193 already in queue awaiting acceptance (9 occurrences)
Dec  3 13:50:28 jail kernel: sonewconn: pcb 0xfffff8011b2211e8: Listen queue
overflow: 193 already in queue awaiting acceptance (12 occurrences)
Dec  3 13:51:31 jail kernel: sonewconn: pcb 0xfffff8011b2211e8: Listen queue
overflow: 193 already in queue awaiting acceptance (10 occurrences)
Dec  3 13:52:59 jail kernel: sonewconn: pcb 0xfffff8011b2211e8: Listen queue
overflow: 193 already in queue awaiting acceptance (35 occurrences)
Dec  3 13:54:06 jail kernel: sonewconn: pcb 0xfffff8011b2211e8: Listen queue
overflow: 193 already in queue awaiting acceptance (13 occurrences)
Dec  3 13:55:11 jail kernel: sonewconn: pcb 0xfffff8011b2211e8: Listen queue
overflow: 193 already in queue awaiting acceptance (97 occurrences)
Dec  3 13:56:11 jail kernel: sonewconn: pcb 0xfffff8011b2211e8: Listen queue
overflow: 193 already in queue awaiting acceptance (134 occurrences)
Dec  3 13:57:13 jail kernel: sonewconn: pcb 0xfffff8011b2211e8: Listen queue
overflow: 193 already in queue awaiting acceptance (169 occurrences)
Dec  3 13:58:17 jail kernel: sonewconn: pcb 0xfffff8011b2211e8: Listen queue
overflow: 193 already in queue awaiting acceptance (143 occurrences)
Dec  3 13:59:17 jail kernel: sonewconn: pcb 0xfffff8011b2211e8: Listen queue
overflow: 193 already in queue awaiting acceptance (51 occurrences)

It is a virtual machine with jails (one runing wordpress another runing ngi=
nx)
on VMware. Once this happens I can't stop affeted jail. Only ungracefull re=
boot
of the whole virtual machine helps. Likely related to spikes of client
connections.

--=20
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