RFR: JDK-8301661: Enhance os::pd_print_cpu_info on macOS and Windows [v3]

[Matthias Baesken]

On Wed, 8 Feb 2023 20:46:57 GMT, David Holmes <dholmes at openjdk.org> wrote:

> I have no idea what possible use the "idle state" information would be in any case. We don't have that per-processor info on non-Windows.

Hi David,  there is some info about the idle states at  https://learn.microsoft.com/en-us/windows-hardware/test/wpt/cpu-analysis  ;  if you think that currently, with the info only available on Windows, it makes not that much sense to add, it I can omit it for now.  Would probably make it easier to scan through the cpu-infos and observe same MHz numbers for all and then print the same info for all processors (as I said, where I tested the MHz values were the same for all CPUs only the current idle states varied).

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PR: https://git.openjdk.org/jdk/pull/12403