Check_MK Werk 5272: Make Real-Timer-Helper Pool configurable

ID: 5272 Title: Make Real-Timer-Helper Pool configurable Component: Core & setup Level: 1 Class: New feature Version: 1.5.0i3 The number of Maximum concurrent Real-Time checks is now configurable. You can change the setting on the GUI at Global Settings - Monitoring Core. Default value is set to 1, which preserves the previous behavior.