We are working on a script that is meant to monitor the "behindness" of 
our master to two slave setup.

I have been researching online trying to figure out how to interpret 
the sl_status values
on the master versus the slaves.   From my reading it seems like we 
should be monitoring
the master sl_status table for the "behindness" of each of the slaves.  
As an alternative could we measure the "caught-up-ness"
in the slaves sl_status table?  How are these values related or 
different?

Thanks for the help!


Christian