[ntp:questions] Re: clock resolutions for different OS

Piotr Trojanek ptrojane at mion.elka.pw.edu.pl
Thu Aug 21 12:29:18 UTC 2003


In article <bhvd3a$b6i$1 at dungeon.mctavish.co.uk>, Steve Woodford wrote:
>Partially correct. On x86 CPUs, NetBSD-1.6.x, and earlier releases, use
>the traditional timer-based microtime(). NetBSD-current on x86 uses the
>cpu cycle counter, if available (and known to be trustworthy).

I don't know much about -current, but checked it -- the PPS and NTP
routines use cycle counter, but still keeps timestamp in 'struct timeval',
which has only 'usec' resolution.

-- 
Piotr Trojanek



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