#!/usr/bin/awk -f
#
# splits ntpd's peerstats into separate files according to each peer
# for plotting with gnuplot
#
# Usage: awk -f peerstat.awk peerstats.20070101 peerstats.20070102 ..
#
# $1 = MJD, $2 = seconds, $3 = peer address, $4 = status
# $5 = offset, $6 = delay, $7 = dispersion, $8 = rms jitter
#
{
	if (NF >= 8) {
		# convert MJD to Unix timestamp, 40587 is Unix epoch in MJD.
		if (mjd != $1) {
			mjd = $1
			ymd = ($1-40587)*86400
		}
		ts = ymd + int($2)

		# write timestamp, offset, delay and jitter to 'log.address'
		print ts, $5, $6, $7, $8 > ("log."$3)
	}
}