13-CURRENT: several GB swap being used despite plenty of free RAM

[George Mitchell]

On 11/18/18 7:11 AM, Stefan Blachmann wrote:
> The inconveniences that the new swapping strategy causes are a regular
> topic in the FreeBSD forums.
> 
> Desktop users complain about lagginess, server users complain of long
> delays because server processes intended to be kept in memory for
> quick response times got swapped out and need to be swapped in again,
> resulting in outrageously poor server performance in spite of plenty
> of unused memory.  [...]
Before necessarily blaming swapping, have you tried substituting
SCHED_4BSD for SCHED_ULE in the kernel?  SCHED_ULE is not the world
champion scheduler for interactive tasks.

(I'm ducking back into my rabbit hole now and no one needs to throw
any more brickbats at me.  Sorry for the digression.)      -- George

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