Abstract: Embodiments include methods for a network data analytics function (NWDAF) of a communication network. Such methods include obtaining, from an operations administration maintenance (OAM) network function (NF) of the communication network, the following information for each of one or more target NF instances in the communication network: an identifier of the target NF instance: a NF type associated with the target NF instance: resource usage by the target NF instance; and resource configuration of the target NF instance. Such methods also include computing analytic(s) related to deviation in processing load or capacity of the target NF instances, based on the information obtained from the OAM NF and on a capacity dimensioning model for each target NF instance. Such methods also include sending, to a consumer NF of the communication network, a message including the computed analytic(s). Other embodiments include complementary methods for the OAM NF and the consumer NF.