Kernel Boot Parameters “hpet=disable” and “nohpet”

(Doc ID 1918402.1)

Last updated on SEPTEMBER 14, 2017

Applies to:

Linux OS - Version Oracle Linux 6.0 and later
Linux x86-64
Linux x86


Kernel boot parameter HPET (High Precision Event Timer) is used for specifying hardware timer/clock source.

HPET is not available for all sorts of hardware, and some HPET clocks are considered unreliable.

This document describes how to disable HPET with kernel boot parameters “hpet=disable” and “nohpet”.


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