Intel Atom Elkhart Lake APIC Timer

ravi · **Joined:** Fri Sep 08, 2023 10:46 am **Posts:** 41

Hello Octocontrabass

as per the information i have read APIC timer ticks of the CPU clock, so what will happen if the SOC throttles its clock, is APIC timer also affected by it

thanks
Ravi

Octocontrabass · **Joined:** Mon Mar 25, 2013 7:01 pm **Posts:** 5147

Intel SDM wrote:

If CPUID.06H:EAX.ARAT[bit 2] = 1, the processor’s APIC timer runs at a constant rate regardless of P-state transitions and it continues to run at the same rate in deep C-states.

CPUID says the APIC timer is not affected.

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Intel Atom Elkhart Lake APIC Timer

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