Embodiments of the present invention disclose a computer-implemented method, computer program product, and system for workload scheduling and resource provisioning. In the deposition of the liquid substance on the carrier by the introduction of the liquid substance into the carrier from the bottom face thereof, a water-detecting sensor detects the liquid level near the top face of the carrier. When notification is ultimately required, the pre-located listeners can be called directly without incurring the performance expense associated with first locating and then calling each listener.