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Date: Fri, 1 Apr 2016 13:37:14 -0700 (PDT)
From: Don Lewis <truckman@FreeBSD.org>
Subject: Re: CURRENT slow and shaky network stability
To: ohartman@zedat.fu-berlin.de
cc: imb@protected-networks.net, kmacy@freebsd.org, freebsd-current@freebsd.org
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On  1 Apr, O. Hartmann wrote:
> Am Wed, 30 Mar 2016 00:28:39 -0700 (PDT)
> Don Lewis <truckman@FreeBSD.org> schrieb:

>> Do you use tmpfs?  Anything stored in there will get stashed in inactive
>> memory and/or swap.
> [...]
> 
> Yes, /var/run  and /tmp are on tmpfs 

There is probably not enough stashed in /var/run to make a difference,
but if there is a lot in /tmp, it could bloat the amount of inactive
memory and cause other things to be pushed to swap.  What does
	df /tmp
say?

Depending on the workload, you might find that the change committed in
r280963 helps interactivity.

I still can't explain the ssh connection timeout problems that you are
seeing.  What does
	ps lax
report as the MWCHAN for the stuck ssh and/or sshd processes?