Default Job Priorities properties on UNIX/Linux

Article:HOWTO33113  |  Created: 2010-10-28  |  Updated: 2011-03-10  |  Article URL http://www.symantec.com/docs/HOWTO33113
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Default Job Priorities properties on UNIX/Linux

The Default Job Priorities host properties let administrators configure the default job priority for different job types. The Default Job Priorities host properties list 18 job types and the configurable default priority for each.

Figure: Default Job Priorities dialog box

Default Job Priorities dialog box

The job priority can be set for individual jobs in the following utilities:

  • In the Jobs tab of the Activity Monitor for queued or active jobs.

    See Changing the Job Priority dynamically on UNIX/Linux.

  • In the Catalog utility for verify, duplicate, and import jobs.

  • In the Reports utility for a Media Contents report job.

  • In the Backup, Archive, and Restore client interface for restore jobs.

The Default Job Priorities dialog box contains the following properties.

Table: Default Job Priorities dialog box properties

Property

Description

Job Type and Job Priority list

This listing includes 18 job types and the current configurable priority for each.

Job Priority

The Job Priority value specifies the priority that a job has as it competes with other jobs for backup resources. The value can range from 0 to 99999. The higher the number, the greater the priority of the job.

A new priority setting affects all the policies that are created after the host property has been changed.

A higher priority does not guarantee that a job receives resources before a job with a lower priority. NetBackup evaluates jobs with a higher priority before those with a lower priority.

However, the following factors can cause a job with a lower priority to run before a job with a higher priority:

  • To maximize drive use, a low priority job may run first if it can use a drive that is currently loaded. A job with a higher priority that requires that the drive be unloaded would wait.

  • If a low priority job can join a multiplexed group, it may run first. The job with a higher priority may wait if it is not able to join the multiplexed group.

  • If the NetBackup Resource Broker (nbrb) receives a job request during an evaluation cycle, it does not consider the job until the next cycle, regardless of the job priority.

See JOB_PRIORITY bp.conf entry for UNIX servers and clients

See Understanding the Job Priority setting on UNIX/Linux

See About the Host Properties on UNIX/Linux


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