24 Mar
2009
24 Mar
'09
8:46 p.m.
On Wed, Mar 25, 2009 at 12:09 AM, Zane H. Healy <healyzh at aracnet.com> wrote:
At 4:15 PM -0400 3/24/09, Paul Koning wrote:
I never got to play with an 11/73 back in the day (we stopped buying
PDP-11 gear around the days of the F-11 chip), but I would not be
shocked to learn that the J-11 is twice as fast as a MicroVAX-I. It
really is dog slow. It's a good thing the MicroVAX-II was much, much
faster or DEC would have been in trouble long before they eventually
got into trouble.
-ethan
RSTS on an 11/73 driving an TU50 would stream quite well (with
Backup). ?Is a MicroVAX-I slower than that? ?Or does RSTS do streaming
I/O better than VMS? ?(I suppose that's possible...) ?Interrupt
latency shouldn't be much of an issue; the thing is that you have to
queue up multiple buffers.
Isn't the PDP-11/73 about twice as fast as a MicroVAX I? ?Remember the
MicroVAX I is only 0.3 VUPS.