Postgres fluent parser skips "aggressive vacuums to prevent wraparound"
The fluentd parser for vacuum operations doesn't know about vacuum runs for wraparound prevention:
- https://ops.gitlab.net/gitlab-cookbooks/gitlab_fluentd/-/blob/master/templates/default/postgres.conf.erb#L74
- https://log.gprd.gitlab.net/goto/bcc930ee5881edbc2c99842cee9191a9
Example:
automatic aggressive vacuum to prevent wraparound of table "gitlabhq_production.public.namespaces": index scans: 1
pages: 0 removed, 335087 remain, 3 skipped due to pins, 29387 skipped frozen
tuples: 6906 removed, 12713853 remain, 23 are dead but not yet removable, oldest xmin: 3558398528
buffer usage: 860640 hits, 1730318 misses, 462997 dirtied
avg read rate: 31.905 MB/s, avg write rate: 8.537 MB/s
system usage: CPU: user: 134.41 s, system: 22.87 s, elapsed: 423.69 s