HP Distributed Print Service Administration Guide

Chapter 9 275
Managing Spoolers, Queues, and Logical Printers
Performing Other Spooler-Related Tasks
Performing Other Spooler-Related Tasks
This section describes the following routine tasks:
• managing and responding to queue backlogs
• enabling and disabling logical printers
• modifying logical printer attributes
• modifying the initial value object attributes
• modifying the printer-register-threshold attribute
About Managing Queue Backlog
Queue backlog is the condition where many jobs or extremely large jobs
are waiting in the queue, causing users to wait a longer amount of time
than usual to receive their printed output. By configuring queue backlog
attributes, you specify amounts of time that represent the upper
boundary and lower boundary for a backlogged queue.
This section describes how you can manage queue backlog once it occurs;
see “Configuring the Queue Backlog Attributes” in Chapter 6 for
configuration information.
About the Queue Upper Backlog Boundary
The upper backlog boundary represents when you consider the queue
backlogged. You usually base the upper backlog boundary on the
expectations of users regarding how long it takes their jobs to print and
how long they are willing to wait for their jobs during the busiest times
of the day. Most users understand that:
• the demand on printer devices, that is, the number of jobs that need
to be printed, varies during the day
• other users share the printers and some jobs can be large
• large jobs take longer to print than small jobs
Set the upper boundary so that it is somewhat greater than the amount
of time that users are willing to wait, but less than the amount of time
that causes users to contact you because they are waiting too long for
jobs. For example, if your users are usually willing to wait 10 minutes for