[mdlug] Clocks

Joe Doehler lugnuts at doehler.us
Fri Dec 18 13:55:05 EST 2009


Carl T. Miller wrote:
>...
> Joe, this is the first I've heard of this.  What clock
> source were you using before and what did you change it to?
>...

Carl,

'tsc' (a.k.a. Time Stamp Counter) relies on the CPU clock. This is not a 
suitable clock source if your power management system changes the CPU 
frequency. It can also get confused if you have a multi-core system. If 
your list of available clock sources includes 'hpet' (a.k.a. High 
Precision Event Timer), that would probably be your best bet. I have an 
older mobo, and 'tsc' works best on it.

Joe.




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