Xerox 4.2 - Manual (Page 12)

A new dialog is now available in Preferences that
allows the user to slow down updates to the job list.
This may be useful because the process of updating
the job list may adversely affect printer performance.
This feature allows the user to balance printer
performance with job status updates.
This feature is not meant for normal use. The feature
is meant to provide System Administrators an option
for reducing CPU load in the event that print
performance is degraded due to a large number of job
submissions. The default setting for this feature is 1
second. The value can be set between .25 seconds
(250 milliseconds) to 5 seconds (5000 milliseconds).
When the feature is disabled, updates are posted in a
real-time fashion.
Job Processing tab shown with job redisplay interval control
8 DocuSP 3.8 and 4.0 to 4.1 Differences Document