1. A method including: determining a first quantity of data records in a set of data records received by an application having a module; for the module of the application, determining a second quantity of data records provided as output by the module during processing of the set of data records; determining whether the first and second quantities of data records satisfy a rule indicative of a target relationship among a quantity of data records received by the application and a quantity of data records provided as output by the module of the application; and determining a latency associated with processing the set of data records by the application based on a time at which a particular data record was provided as output by the module of the application, the providing of the particular data record as output having caused the rule to be satisfied.