denis-stepanov
commented
2 years ago Implemented as follows:
(advent-pyenv) $ db-djv-pg dbinfo -h
usage: db-djv-pg dbinfo [-h] [-c]
optional arguments:
-h, --help show this help message and exit
-c, --check check database consistency
(advent-pyenv) $ db-djv-pg dbinfo -c
Dejavu database info:
Fingerprinted / total tracks = 117 / 117
Peak groups = 29482 (avg. ~= 252 per track)
Fingerprints = 760255 (avg. ~= 6498 per track)
Total fingerprinted time ~= 489 s (avg. ~= 4.2 s per track)
Database size ~= 117 MB (avg. ~= 1.0 MB per track)
Fingerprinting frequency ~= 1555 Hz (~= 3.53% of sampling frequency 44100 Hz)
Hash size = 10 B
Hash collisions ~= 19.74%
First update ~= 2022-10-27 23:19:34
Last update ~= 2022-10-27 23:24:19
Last vacuum ~= 2022-10-27 23:46:24
AdVent database info:
Countries = 1
TV channels = 11 (avg. ~= 11 per country)
Jingles = 117 (avg. ~= 11 per TV channel)
Pure entry / entry jingles = 36 / 70
Pure exit / exit jingles = 47 / 81
No action jingles = 0
Time coverage from = 2022-02-05
Time coverage till = 2022-10-14
Database health checks:
D0010: timestamps in future : OK
D0011: created > modified : OK
D0020: same song name, different SHA1 : OK
D0021: same SHA1, different song name : OK
D0030: fingerprinted without fingerprints : OK
D0035: fingerprint counts mismatch : OK
D0040: fingerprint hashes of variable size : OK
D0100: vacuum needed : OK
A0010: non-fingerprinted tracks : OK
A0020: low confidence tracks : OK
A0050: bad track name format : OK
A0051: bad track date format : OK
A0080: bad flags : OK
--------------------------------------------------+-------
TOTAL CHECKS : OK
(advent-pyenv) $
It would be good to have a command like
db-djv-pg dbinfowhich would display a database summary: number of tracks, number of fingerprints, date of last update, etc.