On Mon, 8 Aug 2011, Jukka Ruohonen wrote:
We should not really trust ACPI/FADT here. See acpicpu(4) how this is
Why?
derived from the actual CPU information. Additionally, I suggested decreasing the quality of tsc(9) based on this information a long time ago, but joerg@ had concerns about this.
TSC is considerably faster so definitely preferred, but if it doesn't work, it doesn't work.