m555 writes:
> On 28 Feb 2000 22:02:22 GMT, [log in to unmask] (47u) wrote:
> >The jump from the /800 to /1000 is due to new software features that
> >are only enabled on 10-way and 12-way systems running 6.5.
>
> Like what? And why can't they be enabled on fewer CPUs?

I would *guess* that there are no features that get "enabled" when you go
from 8 to 10 cpus, but that the changes made to MPE involved primarily
eliminating resource contention (i.e the locking of semaphores around access
to shared system structures, etc.) which was limiting the 10-way and 12-way
boxes to probably about the same performance as the 8-way models.

As far as I know, these changes should have some benefit for *all*
multi-processor 3000s, but they probably won't be noticed as much on the
lower "-way" boxes.

G.