[ntp:questions] Re: info on use by NTP of CPU cycle counters etc

David Schwartz davids at webmaster.com
Wed Aug 27 23:35:04 UTC 2003

"Drk Ryan" <ryandrk at hotmail.com> wrote in message
news:de98eac0.0308251228.2ef52f28 at posting.google.com...

> >Besides the time quantity that is incremented every timer interrupt
> >there are some hardware facilities to help to interpolate the time
> >between individual interrupts. For Linux 2.0 Pentium or better use
> > the
> >processor's cycle counter for a very fine resolution (below 1
> >microsecond), while other CPU's on arch i386 use the registers of the
> >timer chip that generates periodic interrupts.

> Is this information (explaining  the interpolation of interrupts and
> reading of the CPU cycle counter etc.) available in any of the NTP
> documentation?

    I wouldn't think so since NTP itself doesn't do this.


More information about the questions mailing list