Re: interative use, The Design of Design

John Levine wrote:

According to Stephen Fuld <SFuld@alumni.cmu.edu.invalid>:

>

This paper from U of Michigan lays out the problem and proposes a
paging design which soon became the 360/67:

https://dl.acm.org/doi/pdf/10.1145/321312.321313

TSS was a disaster due to an extreme case of second system syndrome,
but Michigan's MTS and IBM skunkworks CP/67 worked great.

TSS at CMU was extensively rewritten in assembly and became quite
tolerable--hosting 30+ interactive jobs along with a background
batch processing system. When I arrived in Sept 1975 it was quite unstable with up times less than 1 hour. 2 years later it would run
for weeks at a time without going down.
As I understand it* most of the changes were simply getting rid of
things that were not present on CMU's 360/67.
(*) was told by someone who should have known circa 1974 who also
worked in the machine room 3rd floor in what became Scaife hall.