HP 3000 Manuals

Introduction to MPE XL for MPE V System Administrators

System Performance Improvements 

The logon response time should be noticeably faster in MPE XL because of
two changes in the operating system.  First, jobs and sessions are now
handled separately and in parallel.  Sessions will not be dispatched
before jobs.  Second, DEVREC has been replaced by the JSMAIN processes,
which are automatically created by job and session processes at system
startup.

Now, instead of logging on and waiting for DEVREC to create a process, as
in MPE V/E, processes are immediately available from JSMAIN. These
processes are already initialized, so there is no waiting for system
resources or setup procedures.

If system resources are momentarily unavailable, the system will
automatically reschedule a job if it fails before $STDLIST is
established.  If a session fails, it is not rescheduled.  It must be
re-entered.

MPE/iX 5.0 Documentation