AD MP - Global Catalog Data Sources query any GC in the domain
Issue exists in the current version 10.0.2.1 of the AD MP.
For the DC Global Catalog performance and availability monitors, as well as the Domain Member Global Catalog performance monitor, the DNS list of IPs returned for the entire domain is used to determine which GC to query. In a large distributed environment like ours, this can mean connecting to a DC all the way across the world, which can obviously cause performance issues. These monitors should also have options to only use local GCs for these tests.