OPPO Kernel Craftsman
Apr 29, 2022 · Fundamentals
Understanding RTG (Related Thread Group) in the Linux Kernel: Core Selection, Frequency Aggregation, and Busy Hysteresis
The article explains Linux’s Related Thread Group (RTG) mechanism—its struct definition, default Android grouping, core‑selection logic that boosts whole groups to big‑core clusters, load‑aggregation for DCVS frequency decisions, and the newer busy‑hysteresis feature that delays low‑power entry to improve performance and power efficiency.
CPU schedulingDCVSLinux kernel
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