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# awk program to scan peerstats files and report errors/statistics
#
# usage: awk -f peer.awk peerstats
#
# format of peerstats record
# MJD sec ident stat offset (s) delay (s) disp (s)
# 49235 11.632 128.4.2.7 f414 -0.000041 0.21910 0.00084
#
BEGIN {
n = 0
MAXDISTANCE = 1.0
}
#
# scan all records in file
#
{
if (NF >= 7 && ($7 + $6 / 2) < MAXDISTANCE) {
i = n
for (j = 0; j < n; j++) {
if ($3 == peer_ident[j])
i = j
}
if (i == n) {
peer_ident[i] = $3
peer_tmax[i] = peer_dist[i] = -1e9
peer_tmin[i] = 1e9
n++
}
peer_count[i]++
if ($5 > peer_tmax[i])
peer_tmax[i] = $5
if ($5 < peer_tmin[i])
peer_tmin[i] = $5
dist = $7 + $6 / 2
if (dist > peer_dist[i])
peer_dist[i] = dist
peer_time[i] += $5
peer_time_rms[i] += $5 * $5
peer_delay[i] += $6
peer_disp[i] += $7
}
} END {
printf " ident cnt mean rms max delay dist disp\n"
printf "==========================================================================\n"
for (i = 0; i < n; i++) {
peer_time[i] /= peer_count[i]
peer_time_rms[i] = sqrt(peer_time_rms[i] / peer_count[i] - peer_time[i] * peer_time[i])
peer_delay[i] /= peer_count[i]
peer_disp[i] /= peer_count[i]
peer_tmax[i] = peer_tmax[i] - peer_time[i]
peer_tmin[i] = peer_time[i] - peer_tmin[i]
if (peer_tmin[i] > peer_tmax[i])
peer_tmax[i] = peer_tmin[i]
printf "%15s%5d%9.3f%9.3f%9.3f%9.3f%9.3f%9.3f\n", peer_ident[i], peer_count[i], peer_time[i] * 1e3, peer_time_rms[i] * 1e3, peer_tmax[i] * 1e3, peer_delay[i] * 1e3, peer_dist[i] * 1e3, peer_disp[i] * 1e3
}
}
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