Sudden grow of memory in "Laundry" state

[RW]

On Mon, 5 Nov 2018 15:04:38 -0800
Mark Millard via freebsd-hackers wrote:

> On 2018-Nov-5, at 14:21, Rozhuk Ivan <rozhuk.im at gmail.com> wrote:
> 
> > run, it was killed 
> > Nov  5 21:05:09 firewall kernel: pid 96603 (testvm), uid 0, was
> > killed: out of swap space Nov  5 21:05:15 firewall kernel: Nov  5
> > 21:05:09 firewall kernel: pid 96603 (testvm), uid 0, was killed:
> > out of swap space  
> 
> Unfortunately, the wording of this message is a misnomer for what
> drives the kills: it is actually driven by being unable to gain more
> free memory but FreeBSD will not swap-out processes that stay runnable
> (or are running), only ones that are waiting.

When you say it wont swap-out processes, do you mean that literally, or
do you mean it wont page-out from runable processes? Swapping processes
shouldn't be an essential part of recovering memory, Linux doesn't even
support it.