[TUHS] PDP-7 Unix Paper

Larry McVoy lm at mcvoy.com
Wed Feb 14 12:21:22 AEST 2018


On Wed, Feb 14, 2018 at 10:30:52AM +1100, Dave Horsfall wrote:
> I'm still astonished at the constraints those guys had to suffer:
> 
>     PDP-7 Unix provided a multitasking environment by dividing the 8K
>     words of memory into two halves.  The lower half of memory was
>     reserved for the kernel.  The upper half of memory was set aside for
>     the currently running process.
> 
> But you try and tell the young people today that... and they won't believe
> you.

Don't even get me started.  Young people think that a VM is a server.
I wrote a microbenchmark suite, lmbench, and I get people sending me
email that they get inconsistent results on their VM.

The lack of knowledge that would make someone ask about that is stunning.


More information about the TUHS mailing list