Actual correlation data is stored at 38A. Bundles of fibers are packed together so as to form capillary channels between the fibers. During the execution of the computer program, and in response to the marker instruction being executed, a hardware engine monitors data accesses associated with execution of instructions in the marked section and stores the data accesses in the storage of the hint. A mainframe monitoring process monitors the performance of the various hardware and software components on a mainframe. The outer polyester coatings also protect the aluminum layers such as to prevent any aluminum from rubbing off the insulation and also prevent the aluminum layers from oxidizing.