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This patch adds 4 priority levels to the runtime subsystem. The highest priority is used for components that are critical for the operation of Sculpt, in particular the Leitzentrale GUI. All regularly deployed components are assigned the lowest priority by default. With priorities available in the runtime subsystem, this patch flattens the priority levels at the top-level init to only two levels and overlays the priority bands of the drivers, leitzentrale, and runtime subsystems into one priority band. This has three benenfits: - This change prevents the starvation of the Leitzentrale GUI from a spinning high-priority driver (issue #3997). - The change will also ease the hosting of latency-critical components in the runtime subsystem that are prioritized higher than regular components, the storage stack, and the network stack. - The Leitzentrale GUI remains always perfectly responsive regardless of the workloads deployed from packages. In the previous version, the runtime graph was sometimes stuttering on high system load. Issue #4045 |
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