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Annotation of embedaddon/ntp/scripts/stats/loop.awk, revision 1.1.1.1

1.1       misho       1: # awk program to scan loopstats files and report errors/statistics
                      2: #
                      3: # usage: awk -f loop.awk loopstats
                      4: #
                      5: # format of loopstats record
                      6: #  MJD    sec   time (s)  freq (ppm)  poll
                      7: # 49235  3.943  0.000016   22.4716    6
                      8: #
                      9: # format of output dataset (time values in milliseconds, freq in ppm)
                     10: # loopstats.19960706
                     11: # loop 1180, 0+/-11.0, rms 2.3, freq -24.45+/-0.045, var 0.019
                     12: #
                     13: BEGIN {
                     14:        loop_tmax = loop_fmax = -1e9
                     15:        loop_tmin = loop_fmin = 1e9
                     16: }
                     17: #
                     18: # scan all records in file
                     19: #
                     20: {
                     21:        if (NF >= 5) {
                     22:                loop_count++
                     23:                if ($3 > loop_tmax)
                     24:                        loop_tmax = $3
                     25:                if ($3 < loop_tmin)
                     26:                        loop_tmin = $3
                     27:                if ($4 > loop_fmax)
                     28:                        loop_fmax = $4
                     29:                if ($4 < loop_fmin)
                     30:                        loop_fmin = $4
                     31:                loop_time += $3
                     32:                loop_time_rms += $3 * $3
                     33:                loop_freq += $4
                     34:                loop_freq_rms += $4 * $4
                     35:        }
                     36: } END {
                     37:        if (loop_count > 0) {
                     38:                loop_time /= loop_count
                     39:                 loop_time_rms = sqrt(loop_time_rms / loop_count - loop_time * loop_time)
                     40:                loop_freq /= loop_count
                     41:                loop_freq_rms = sqrt(loop_freq_rms / loop_count - loop_freq * loop_freq)
                     42:                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
                     43:        }
                     44: }
                     45: