Re: [RFC PATCH 0/4] cpufreq/amd-pstate: Per-core EPP boost for recently-busy CPUs

[David Vernet]

On Tue, Jul 28, 2026 at 02:31:46AM -0500, David Vernet wrote:
> In active (EPP) mode the platform autonomously picks the operating point
> between min_perf and max_perf, biased by the EPP hint, and the kernel
> only rewrites the CPPC request on policy or limit changes. A workload
> dominated by one mostly-busy thread that takes frequent short sleeps
> (common in gaming workloads, for example) can fare poorly under this
> strategy. Each sleep decays the hardware's performance signal, causing
> post-wakeup bursts to start at a low operating point and inflating tail
> latency even though the CPU is essentially fully busy while work is

... Argh, sorry, got my aliases mixed up.

+cc the rest of the AMD pstate driver maintainers (and removing Gautham)

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