Technological advantages over Linux

[Steve O'Hara-Smith]

On Mon, 17 Feb 2020 11:01:06 -0500
Lowell Gilbert <freebsd-questions-local at be-well.ilk.org> wrote:

> Steve O'Hara-Smith <steve at sohara.org> writes:
> 
> > 	The late Morten Reistad used to post (in alt.folklore.computers)
> > about the numbers of processors with memory management being made and
> > comparing that with Windows licenses, Apple and Android phone production
> > numbers. Windows, MacOs and commercial unix licenses only account for a
> > small fraction of the CPUs made - most of them have to be running
> > something else Linux (Android, routers, TVs, cars ...), BSD (routers
> > and who knows what else) and Mach (iThingies) being the obvious
> > available kernels.
> 
> Back then, having memory management implied having virtual memory. These

	Back then was a couple of years ago.

> days, some fairly low-end CPUs have MMUs. Furthermore, memory management

	Low end CPUs that are a lot more powerful than a PDP-11.

> is very useful for implementing process privileges, even on an OS that
> does not use virtual memory; again, something that wasn't relevant back
> in the ay.

	Having an MMU is a pre-requisite for running a multi-user OS, that
was why he picked that feature. 

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