The feature AllowRenewalIfOtherItemsAvailable can take a tremendous amount of processing for records with large numbers of holds and/or items. For example, for a record with 50 items and 100 holds we must call a series of subroutines 5000 times!

The loop this processing takes place in has an outer loop of borrowers and an inner loop of items. However, two of the three subroutines only need an itemnumber. So, if we move the items loop to be the outer loop, we can 'cache' these subroutine calls and vastly improve the speed of the subroutine.