How much swap space for a 32 GB RAM system?

[RW]

On Tue, 22 Jul 2014 10:24:13 -0600 (MDT)
Warren Block wrote:

> On Tue, 22 Jul 2014, Arthur Chance wrote:
> 
> > I'm getting a new machine with 32 GB of memory. The old "twice
> > physical memory" sizing seems ridiculous, so how big should I make
> > swap? Do I even need swap with this much memory?
> 
> Technically, no, but the system does like to have at least a little
> swap space and can benefit from it.  (I forget where this is
> explained, tuning(7) maybe.)

This is something that is often repeated, but I don't recall every
seeing an actual explanation.