bytecodealliance / bytecodealliance/sightglass

Warn when CPU governor is not "performance" on Linux

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Description

From https://github.com/bytecodealliance/sightglass/issues/138:

> Observe CPU governor settings when on a known platform (Linux: `/sys/devices/system/cpu/cpu*/cpufreq/scaling_governor` text file, will usually be `ondemand`, we want `performance`) and warn if scaling is turned on

If anyone knows how to detect the equivalent thing for other OSes, please share :)

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