> -----Original Message-----
> From: HP-3000 Systems Discussion [mailto:[log in to unmask]]On
> Behalf Of Chad Gilles
> Sent: Friday, November 20, 1998 3:38 AM
> To: [log in to unmask]
> Subject: PCB Limits?
>
>
> Internals Gurus!
>
> Does anyone know if there are limits to the number of PCBs (Process
> Control Blocks) in MPE/ix 5.5?  If so, is this configurable and if so
> what is the parameter. Is there any command/function that will show me
> my current utilization vs. configured maximums for PCBs?  I'm having
> trouble finding very much on PCBs in LaserRom.

The maiximum number of concurrent processes on MPE/iX 5.5 is 8190, and it
is limited by the maximum size of the PCB data structure. This is
NOT configurable (in the standard sense) and the table is "maxed out"
on all systems (except small memory systems -- < 64 MB memory).

I am guessing that since you are asking you want to make it bigger,
not smaller. Please send me some private e-mail regarding with the
following iformation (if you have it) and I would be happy to discuss
the situation with you:

* Maximum number of concurrent users you have today on your largest
  system.
* Expected growth over the next year, 2 years, and 5 years.
* Impact to business of not being able to put all the users on
  a single system.
* Are all your users homgeneous (eg all run the same application)?
* Do you have logon UDCs setup to take all your users directly into
  the application(s)? (In other words end users do not have direct
  access to the CI)
* Do you use any type of menus to select which application the
  enduser will be running? If so, how are they implemented?
* Are your users directly connected (DTC) or NW (VT) users?


> Thanks!