16. A method of data profiling code, the method comprising: tagging instruction instances stored in at least one computer readable storage medium utilizing at least one processing unit, that may consume execution time based on loading of data, with identifiers that describe the instruction instances with source-level data object language constructs; for a sampled runtime event detected in execution of the code, identifying an instruction instance of the tagged instruction instances that corresponds to the sampled runtime event detected in execution of code that includes the identified instruction instance utilizing the at least one processing unit; and attributing the sampled runtime event detected to source-level data objects describing units of data identifiable in source code utilizing the at least one processing unit, wherein the attributing is based at least in part on a predefined association between the identified instruction instance in executable code and the source-level data object language construct corresponding thereto.
16. A method of data profiling code, the method comprising: tagging instruction instances stored in at least one computer readable storage medium utilizing at least one processing unit, that may consume execution time based on loading of data, with identifiers that describe the instruction instances with source-level data object language constructs; for a sampled runtime event detected in execution of the code, identifying an instruction instance of the tagged instruction instances that corresponds to the sampled runtime event detected in execution of code that includes the identified instruction instance utilizing the at least one processing unit; and attributing the sampled runtime event detected to source-level data objects describing units of data identifiable in source code utilizing the at least one processing unit, wherein the attributing is based at least in part on a predefined association between the identified instruction instance in executable code and the source-level data object language construct corresponding thereto. 19. The method of claim 16 wherein the code includes one or more of object code, byte code, and machine code.