[ntp:questions] Is 24PPM an Excessive Real-Time Clock Correction?
sandler at ujf.cas.cz
Tue Jul 10 19:16:34 UTC 2007
"Spoon" <root at localhost> wrote:
> I count at least 6 "clocks" on a typical x86-based platform:
> o PIT (Programmable Interval Timer) e.g. Intel's 8253 and 8254
> o RTC (Real-Time Clock)
> o (Local??) APIC timer (not too sure about this one)
> o ACPI timer, also known as PM (Power Management) clock
> o CPU TSC (timestamp counter)
> o HPET (High Precision Event Timers)
A question, please: how can I pick up and localize the clock the ntpd is
based on (in order to measure the temperature of its crystal). The systems
used are Linux or FreeBSD.
More information about the questions