Permanent deadline monitoring job

[Chris Huff]

Can anyone offer any "best practices" or recommendation for how often the
deadline monitoring job (SWWDHEX) should run?
This job kicks off all of our "Waiting" workitems and is currently set to
schedule itself to run 90 minutes after the last job.  I am thinking I want to
reduce this to 30 minutes or less.
 
Any thoughts/lessons learned?
 
Thanks!
Chris
Home Depot I.S.