HP Distributed Print Service Administration Guide

Chapter 9 277
Managing Spoolers, Queues, and Logical Printers
Performing Other Spooler-Related Tasks
then rise above it before the calculation occurs. In either case, you
will not receive a notification message.
• If the interval is smaller
A smaller interval generally results in larger increases and decreases
in the value of the queue-backlog attribute. The smaller the
interval, the less likely that jobs are added to or subtracted from the
queue with equal frequency. Also, the addition or subtraction of a
single large job will have more of an effect with a smaller interval
because the calculated value is not averaged out by the greater
possible number of smaller jobs added to or subtracted from the
queue. The greater the change in the queue backlog value, the greater
the chance that the value will cross the upper or lower backlog
boundaries. If the value crosses one of the boundaries, the backlog
state changes and you can receive a notification message, depending
on how you have set the notification profile for the queue or the
spooler.
NOTE Calculating the backlog value requires spooler processing time. You
should specify a backlog interval value that provides you with adequate
notification and that does not place too much demand on the spooler.
Responding to Queue Backlog
When HPDPS notifies you of a backlogged queue, you must decide how to
respond. First you will want to determine the severity of the backlog
with respect to the backlog limit. Then you will want to determine the
size and states of the jobs in the queue, and whether jobs are assigned to
physical printers.
Use the following procedure to determine the severity of the backlog and
to view information about jobs in the queue.
1. To determine the severity of the backlog, query the values of all of the
queue attributes that reflect whether the queue is backlogged and
that HPDPS uses to calculate the backlogged status.
For example, to query the queue backlog attributes of the queue
Queue3, enter: