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New Intel P-State Linux Driver Patches To Better Handle Hybrid Core CPUs
Intel's power management lead Rafael Wysocki posted a set of patches recently for working out asymmetic CPU capacity on hybrid Core x86 systems.
Intel's power management lead Rafael Wysocki posted a set of patches recently for working out asymmetic CPU capacity on hybrid Core x86 systems. This, in turn, allows the schedutil cpufreq governor to set CPU performance levels consistently in the cases when tasks migrate between CPUs of different capacities. In any case, the extra overhead can be avoided at the cost of making the code a bit more complex (for example, the additional per-CPU memory can be allocated dynamically on hybrid systems only and a static branch can be used for enabling access to it when necessary).
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