ntpd struggling to keep up - how to fix?

Matthew D. Fuller fullermd at over-yonder.net
Fri Feb 12 19:58:21 UTC 2010

On Fri, Feb 12, 2010 at 11:46:04AM -0800 I heard the voice of
Jeremy Chadwick, and lo! it spake thus:
> Technical footnote: I wish I understood 1) the difference between
> ACPI-safe and ACPI-fast,

AIUI, they're nearly the same thing, and it has to do with some
testing to determine how it can be reliably accessed.  I've had
systems that would sometimes come up with -fast, and other times -safe
(I think one varied depending on cold vs. warm boot for instance).

> and 2) how the system or OS "ranks" the timecounters (the higher the
> value in parenthesis, supposedly the more accurate/preferred it is).

That's easier; TTBOMK, they're hardcoded in the source based on
developer SWAG about their relative expenses and reliabilities and

Matthew Fuller     (MF4839)   |  fullermd at over-yonder.net
Systems/Network Administrator |  http://www.over-yonder.net/~fullermd/
           On the Internet, nobody can hear you scream.

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