Browse Prior Art Database

Job Window Processing Control Feature

IP.com Disclosure Number: IPCOM000112034D
Original Publication Date: 1994-Apr-01
Included in the Prior Art Database: 2005-Mar-26
Document File: 4 page(s) / 100K

Publishing Venue

IBM

Related People

Masemore, TL: AUTHOR [+2]

Abstract

The Job Window Processing Control Feature (JWPCF) was designed to control an off-shift application processing during specific time windows. This is a unique feature of VM (Virtual Machine) operating system based tool which is responsible for job application scheduling. This tool is called Load Master, and it was developed to meet application scheduling requirements. The JWPCF is one feature of the Load Master application scheduling tool, and is responsible for determining if a job will complete by a designated date and time.

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Job Window Processing Control Feature

      The Job Window Processing Control Feature (JWPCF) was designed
to control an off-shift application processing during specific time
windows.  This is a unique feature of VM (Virtual Machine) operating
system based tool which is responsible for job application
scheduling.  This tool is called Load Master, and it was developed to
meet application scheduling requirements.  The JWPCF is one feature
of the Load Master application scheduling tool, and is responsible
for determining if a job will complete by a designated date and time.

      Furthermore, this feature is responsible for analyzing
historical application run-time information to determine if the
application to be submitted will complete within a designated
processing window as defined by start and end times.  This feature is
unique in that it goes beyond normal application scheduling
dependencies, such as scheduled dates, scheduled times, prior
application completions, and resource availability requirements.

      The JWPCF was created in response to a problem with
over-night/off-shift processing jobs impacting prime-shift-system
usage hours.  Such off-shift processing often requires dedicated use
of various system resources, which prevents access by users and other
job applications.  Therefore, the ability to restrict off-shift
processing to specific hours is an important requirement on our
systems.  To be more specific, the JWPCF was developed to ensure that
off-shift job processing did not process beyond designated time
limits and thereby impact prime-shift users and job applications.

      JWPCF provides a job scheduling feature that would utilize
historical job processing information to determine average job run
time.  This information could then be used to determine ahead of time
if a job would complete before or by a designated date and time.  If
it is determined that the job would not be completed by the
designated date and time, then the job would not be initiated for
processing.

      This idea deviates from existing job scheduling systems in that
it introduces a "new" type of job dependency based on historical job
run-time information.  An estimate of a given job's run time is
specified to the Load Master system the first time the job is run and
after the first job run actual run times are utilized.

      The job dependency based on average job run time and required
job completion time was added to the Load Master job scheduling
system.  To accomplish this, an existing job schedule control file
was modified to allow the recording of average job run-time
information.  The following is a sample job schedule control file:

      SAMPLE JOB SCH...