A method and apparatus adapted to calibrate a signal path of a signal analysis system such that loading effects of the system are substantially removed from measurements of a device under test. The first circuit includes a wired medium interface circuit that is configured to, in use, communicate data over a wired medium. The top opening is provided at the top portion of the bowl. In a first aspect the method is used for reducing the amount of water produced, in as second aspect for improving the oil recovery. The memory system may be further configured such that the kernel stack and the RSE stack grow in opposite directions and such that a uarea data structure is located between those two stacks.