The PingDataMetrics server polls all of the monitored servers at a regular interval to collect data it to import into the database management system (DBMS).
When they are available, the PingDataMetrics server fetches new samples through LDAP. The PingDataMetrics server has one dedicated thread taking sample blocks and converting them to the normalized form stored in the DBMS. The import queue’s size is normally near zero, but under certain conditions it can become large. When the PingDataMetrics server starts, it will queue for import all sample blocks still on disk. Blocks that are older than two hours are discarded.