A method and apparatus for an apparatus and method for reduction of power consumption in OS that use flat segmentation memory model are described. The disclosed apparatus includes a sleep clock frequency estimator to output a fast clock derived sleep clock frequency estimate and a sleep clock change frequency estimator to output an estimate of a change in frequency of the sleep clock. First and second pressure sensors are coupled to the first and second lines, respectively. The stress test decision circuit then outputs the decision results if the stress test was performed, based on the control signals. The first contribution takes on a high value as the classification proportion becomes high in which one of the nodes having a corresponding one of the links is classified as the component.