/contrib/ntp/scripts/stats/loop.awk
https://bitbucket.org/freebsd/freebsd-head/ · AWK · 45 lines · 29 code · 1 blank · 15 comment · 6 complexity · 2343faaf3e5a49e0a1bb91d24e69a325 MD5 · raw file
- # awk program to scan loopstats files and report errors/statistics
- #
- # usage: awk -f loop.awk loopstats
- #
- # format of loopstats record
- # MJD sec time (s) freq (ppm) poll
- # 49235 3.943 0.000016 22.4716 6
- #
- # format of output dataset (time values in milliseconds, freq in ppm)
- # loopstats.19960706
- # loop 1180, 0+/-11.0, rms 2.3, freq -24.45+/-0.045, var 0.019
- #
- BEGIN {
- loop_tmax = loop_fmax = -1e9
- loop_tmin = loop_fmin = 1e9
- }
- #
- # scan all records in file
- #
- {
- if (NF >= 5) {
- loop_count++
- if ($3 > loop_tmax)
- loop_tmax = $3
- if ($3 < loop_tmin)
- loop_tmin = $3
- if ($4 > loop_fmax)
- loop_fmax = $4
- if ($4 < loop_fmin)
- loop_fmin = $4
- loop_time += $3
- loop_time_rms += $3 * $3
- loop_freq += $4
- loop_freq_rms += $4 * $4
- }
- } END {
- if (loop_count > 0) {
- loop_time /= loop_count
- loop_time_rms = sqrt(loop_time_rms / loop_count - loop_time * loop_time)
- loop_freq /= loop_count
- loop_freq_rms = sqrt(loop_freq_rms / loop_count - loop_freq * loop_freq)
- printf "loop %d, %.0f+/-%.1f, rms %.1f, freq %.2f+/-%0.3f, var %.3f\n", loop_count, (loop_tmax + loop_tmin) / 2 * 1e6, (loop_tmax - loop_tmin) / 2 * 1e6, loop_time_rms * 1e6, (loop_fmax + loop_fmin) / 2, (loop_fmax - loop_fmin) / 2, loop_freq_rms
- }
- }