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18 lines
411 B
Plaintext
18 lines
411 B
Plaintext
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40COL
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%c%How RAPL Works
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* RAPL is not an analog power meter
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* RAPL uses a software power model,
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running on a helper controller
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on the main chip package
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* Energy is estimated using various
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hardware performance counters,
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temperature, leakage models and I/O
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* The model is used for CPU throttling
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and turbo-boost, but the values are
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also exposed to users via a
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model-specific register (MSR)
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