We would like to invite anyone to help us solving a problem.
Our environment: HP/3000-957SX running MPE/iX 5.0 with 120 users having a
mix of HP terminals and PC's with Reflection for Windows (W3.1 and W95) as
emulator.
Comms hardware is DTC72MX.
Only one application is running on the system being EMA/3000 (Materials
management system developed by SIPM (Shell)).

The problem: whenever a user accidentally switches off his PC or Terminal
while in an active session with HP, that specific session will hang up and
Glance shows a very high CPU usage causing a bottle neck condition wherein
other sessions and batch jobs is starved for CPU.

This occurrs irrespective of: location (remote or local), whether it being
terminal or PC, LDEV number, program-ID, CPU load.
In other words there is no clear pattern in order to isolate the source of
the problem.

The solution currently taken is aborting the session, causing the problem,
however this is obviously not the right way and certainly not a solution. We
have referred this problem to the local HP support representative but have
yet not received guidelines on how to solve it.

The problem persists for over one year now, has also occurred while using
CASE comms. equipment, and during MPE 4.0, and it's frequency varies from
once a week to five times a day.

Suggestions will be welcomed. If more info is required let me know.

Tjarko Dijkema