This object specifies the metrics tolerance percentage value associated with a given priority level for this host. A tolerance percentage lets the Director treat servers whose metric scores are within that percentage of each other as effectively tied, so an admin uses this to avoid the Director constantly flip-flopping between two servers with nearly identical but not exactly equal scores. Setting this to 10% would mean a server scoring within 10% of the current best-scoring server is treated as equally good, preventing minor, insignificant metric fluctuations from causing frequent server-selection churn.