constant means the speed doesn't change with cpu frequency, invariant means the speed doesn't change with power saving. https://www.chromium.org/chromium-os/how

constant means the speed doesn't change with cpu frequency, invariant means the speed doesn't change with power saving. https://www.chromium.org/chromium-os/how-tos-and-troubleshooting/tsc-resynchronization https://www.chromium.org/chromium-os/how-tos-and-troubleshoo...