Re: Clock inaccuracy seen on NVIDIA nForce2 systems

[linux]

> The system is running 2.6.9-rc4 and has been up for 2 days. I'm showing
> an offset of -32 seconds and growing.

That's -185 ppm (parts per million) error, or -0.0185%.

Typical cheap quartz crystals are +/- 100 ppm, but there are some cheaper
than that, and ceramic resonators like
http://www.ecsxtal.com/cerares.htm

I know Dave Mills learned from experience that the original +/-100 ppm
specs in NTP weren't wide enough and he had to change it to cope with
+/-500 ppm error in some clocks.

It *could* just be your motherboard's clock source.
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