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X86 timing: Difference between revisions

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* [[ACPI]] counter
* [[ACPI]] counter
* LAPIC counter
* LAPIC counter
* HPET
* HPET. Unprivileged programmability is limited by <tt>/proc/sys/dev/hpet/max-user-freq</tt> (in Hz):
<pre>[recombinator](1) $ cat /proc/sys/dev/hpet/max-user-freq
64
[recombinator](0) $ </pre>
* TSC since Pentium
* TSC since Pentium
* RTC ([http://fxr.watson.org/fxr/source/Documentation/rtc.txt?v=linux-2.6 Linux docs])
* RTC ([http://fxr.watson.org/fxr/source/Documentation/rtc.txt?v=linux-2.6 Linux docs])