Check_MK Werk 4432: Avoid starvation of normal checks by real-time checks

ID: 4432 Title: Avoid starvation of normal checks by real-time checks Component: Core & setup Level: 1 Class: Bug fix Version: 1.5.0i1 Real-time checks could easily starvate normal checks, because they prevented scheduling of the Check_MK agent with a high probability. This has been fixed now.