.. _arch_overview_load_balancing_overprovisioning_factor:
Overprovisioning Factor
-----------------------
Priority levels and localities are considered overprovisioned with
:ref:`this percentage `.
Envoy doesn't consider a priority level or locality unavailable until the
fraction of available hosts multiplied by the overprovisioning factor drops
below 100. The default value is 140 (in percentage, which means 140%), so a priority level or locality will not be
considered unavailable until the percentage of available endpoints goes below 72%.