15 Jun
2005
15 Jun
'05
10:14 p.m.
On Wed, 15 Jun 2005, Andy Holt wrote:
* I wonder what is the largest number of concurrent
"tty" users that is
reliably reported as having been run on a Unix system. I know that we
replaced one GCOS Honeywell dual-processor 66/60 with 3 Unix Gould 6000s to
manage about the same number of users (tho' they were increasing their
processing demands**) ... but the _purchase_ cost of the Goulds was less
than 3 years _maintenance_ for the Honeywell.
It's a slight change of venue, but Phil Becker's TBBS (I think it
was) ran 64 lines on double-digit MHz Intel processors... full
utilization. Written in assembly language, his code didn't
survive the historical onslaught but it was pretty spectacular at
the time. Some website says there was an alleged custom 96-line
version!
This is 64 serial ports (in N multi-port cards) in a high-end (for
mid-1980's) PC chassis, not special hardware support.
I think Phil wrote space-probe software in a previous life.
http://www.tbbs.org/TBBS.html