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    What does HPET stand for?
    Formerly referred to by Intel as a Multimedia Timer, the term HPET was selected to avoid confusion with the software multimedia timers introduced in the MultiMedia Extensions to Windows 3.0.

    High Precision Event Timer - Wikipedia

    en.wikipedia.org
    What is HPET & how does it work?
    HPET is short for High Precision Event Timer which is often used for synchronizing multimedia streams, reducing the need to use other timestamp calculations, and smoothing the playback. However, although HPET can increase the performance of your PC, it triggers FPS loss and latency & freezes in games.

    How to Disable HPET to Improve Game Performance in Windows 10/11?

    minitool.com
    What is HPET 0 / 1?
    This enables platform code which uses timer 0 or 1 as the main timer to intercept HPET initialization. An example of this initialization can be found in arch/x86/kernel/hpet.c. The driver provides a userspace API which resembles the API found in the RTC driver framework.

    High Precision Event Timer Driver for Linux — The Linux Kernel

    kernel.org
    How long does HPET take?
    A benchmark in that environment for 10 million event counts found that TSC took about 0.6 seconds, HPET took slightly over 12 seconds, and ACPI Power Management Timer took around 24 seconds. In 2019 it was decided to blacklist HPET in newer Linux kernels when running on some Intel CPUs ( Coffee Lake) because of its instability.

    High Precision Event Timer - Wikipedia

    en.wikipedia.org
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