In a recent HP MPE/iX Performance and tuning class, my instructor gave
me the following as memory configuration guidelines.

MPE/iX Requirement 32 MB, I believe at least 50 MB is recommended for
5.5.

User Memory Requirement - 1.5 MB x number of users.

                plus

         Oracle RDBMS           1.5 MB x number of users.

                plus

Application Requirements
  e.g. Oracle RDMS "Shared Global Area" = 20 MB

                plus

Critical Batch Processes        8MB x number of Jobs.

Add these figures up and this will give you the memory requirements. My
instructor also suggested to round your calculations up and purchase the
biggest chunks available, this will allow for future growth.

Ken

Ken Van Pelt
Technical Services Systems Programmer
KVI, a division of Seabury & Smith

Ron Burnett wrote:

> There used to be, somewhere, a rule of thumb about
> sizing memory for HP3000s based on expected number of
> users, style of application, job limit, plus an allowance
> for the OS.
>
> Does anyone remember the details of this?  I vaguely
> recall 5MB per user, 10MB per job, plus something like 100MB (?) for
> MPE/iX, but I could be way out.  And I think 5MB per user when
> they are mostly PowerHouse QUICK screens is probably a bit light.
>
> The reason for asking is that we are experencing some performance
> degradation on an HP3000/957 with 512MB of memory .... and I find
> that, as we speak, I've got 227 sessions (plus probably around
> 40 IMAGE/SQL clients coming in through the 16-bit or 32-bit
> daemons).  Bit like Times Square on New Years Eve, I reckon.
>
> Any clues as to where I can find the sizing specs?
>
> Ron Burnett
> Manager, HP3000 Systems
> Royal Children's Hospital
> Melbourne, Australia
> [log in to unmask]
>
> P.S.  Has **anyone** in Australia got PowerHouse 8.19 yet?