Swap on SSD

Christian Weisgerber naddy at mips.inka.de
Fri Feb 9 20:55:09 UTC 2018

Scott Bennett:

> >Demand paging was introduced in UNIX 32V and entered the BSD line 
>      Are you absolutely certain of that?

Judging from _A Quarter Century of UNIX_, I slightly misrembered.
UNIX/32V was the port to the VAX, but it didn't yet include demand
paging.  That feature was added only in 3BSD.  That doesn't really
matter, though, for the point I was trying to bring across: Saying
"FreeBSD doesn't actually swap these days; uses demand paging" is
rather misleading because that makes it sound like a recent innovation
when it is in fact almost forty years old.

So, yes, "swap" space is a misnomer, but then again, "electricity"
today isn't really about rubbing ambers together either.

Christian "naddy" Weisgerber                          naddy at mips.inka.de

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