Re: Inside an IBM z17

Lawrence D'Oliveiro  <ldo@nz.invalid> wrote:

Now imagine trying to run something more properly interactive, like Emacs
(or vi/vim, if you prefer), through such an interface.

You mean like word processing on PROFS where the editor is basically running
on the channel controller?  That is great and extremely zippy over a slow
network.  Far better performance with any network latency than trying to
send everything over the connection.

CDC did something like this in a less elegant way with the Full Screen
Editor FSE.  The PPU did most of the work but the PPU was tightly coupled
to the CPU so even though it offloaded the CPU completely it didn't help
any for slow connections.

But really, this has nothing to do with transaction processing systems,
which is the topic of this thread.  Transaction systems need to have enough
smarts at the terminal end to generate a transaction and the server needs
to have enough to execute it.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."