[HECnet] A2RTR downtime

[Robert Armstrong]

> Tops10 is also "special" in the way that the user jobs VM
>handler is merged in to user space if needed.. -:)

  That's true - under TOPS-10 you can actually write your own page fault handler.  The idea was that, with knowledge of the application, you could write a more efficient paging algorithm.  Don't think that actually happened much (if ever!) though.

  A couple of us did once have a contest to see who could generate the most page faults per second by writing the stupidest possible page fault handler.

Bob