[TUHS] dmr streams & networking [was: Re: If not Linux, then what?]
arnold at skeeve.com
arnold at skeeve.com
Thu Aug 29 04:49:30 AEST 2019
Doug McIlroy <doug at cs.dartmouth.edu> wrote:
> > Doug McIlroy <doug at cs.dartmouth.edu> wrote:
> >
> >>
> >>> How long was research running on a PDP-11 and when did they move to a VAX?
> >>
> >> London and Reiser had ported Unix to the VAX, replete with virtual memory, in 1978. By the time v7 was released (1979), Vaxen had become the workhorse machines in Research.
> >>
> >> Doug
> >
> > So, what's the story on why the London/Reiser port didn't get adapted
> > back by Research, and they ended up starting from 4.1 BSD?
> >
> > Thanks,
> >
> > Arnold
>
> Sorry, what I said about London/Reiser is true, but not the whole
> story. L/R didn't have demand paging; BSD did.
But my question still stands. Why didn't Research keep going from L/R
and add demand paging? Wouldn't that have been "cleaner" than starting
from BSD?
Thanks,
Arnold
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