A method, system, andor computer program product establishes and utilizes a tenant-specific log for events related to a cloud-based service. The semiconductor device further includes an inter-level dielectric layer on the substrate between the first gate structure and the second gate structure, wherein a top portion of the ILD layer has a different etch selectivity than a bottom portion of the ILD layer. The upper gate part is tapered so that its width is decreased upward from a side end of the underside thereof. The first input stage of the self-biasing differential amplifier may include a first PMOS transistor coupled to a first NMOS transistor in an inverter arrangement.