[Info-vax] What choices are available to the OpenVMS Process Scheduler once all the CPUs are in use?

[abrsvc]

On Thursday, February 11, 2016 at 3:21:54 AM UTC-5, F.Zwarts wrote:
> "abrsvc"  schreef in bericht 
> news:2babd44a-eb5f-4d22-b8a2-f16c75fcc737 at googlegroups.com...
> >
> >On Wednesday, February 10, 2016 at 1:40:06 PM UTC-5, Carl Friedberg wrote:
> >> I would try turning off hyper-threads. I've never seen it make more than 
> >> a
> >> few percent better perofrmance, and it can make things worse. Remember 
> >> the
> >> VAX 782 (with 2CPUs, performance, IIRC, was of order .8 VUP. Hoff will
> >> remember better.
> >>
> >
> >I remember that well.  There was an analysis tool that would indicate 
> >whether or not your particular application would benefit from the 
> >additional CPU.  Please note that the 782 was an ASMP machine 
> >(Asynchronous) and would only benefit compute bound applications.
> 
> I remember that the A stood Asymmetric, not Asynchronous. Asymmetric, 
> because I/O (and some other kernel stuff) was done by the first processor 
> only. Does my memory fail?

Mope.  You are correct.  I was wrong when I typed in my initial reply.  Thanks for catching my error.  Memory fades with time...