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Calculate ARTFrequency from TSC if Unreported#13

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vit9696 merged 1 commit intoacidanthera:masterfrom
mrmiller:adjusted-art
Sep 10, 2019
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Calculate ARTFrequency from TSC if Unreported#13
vit9696 merged 1 commit intoacidanthera:masterfrom
mrmiller:adjusted-art

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@mrmiller mrmiller commented Sep 9, 2019

Calculate ARTFrequency based on the measured TSC frequency for CPUs that don't report it directly and are unknown models. Fixes issues with Skylake-SP chips and clock spread spectrum which causes the ART to deviate approximately -0.25% from its nominal 25 MHz frequency. Fixes acidanthera/bugtracker#448.

…hat don't report it directly and are unknown models. Fixes issues with Skylake-SP chips and spread spectrum which causes the ART to deviate approximately 0.25% from its nominal 25 MHz core crystal clock frequency.
@vit9696 vit9696 merged commit 2a21f53 into acidanthera:master Sep 10, 2019
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vit9696 commented Sep 10, 2019

Makes good sense to me, thank you!

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ART Frequency, CPU Frequency and Clock Drift

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