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Ran 25 Oct 2025 08:49AM UTC

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Committed 25 Oct 2025 08:43AM UTC coverage: 86.67% (-0.4%) from 87.055%

Job # 18800822326.1

Build Type

push

github

Committed by

nbari

Commit Message

feat: add bloat metrics to stat_user_tables collector

Add two derived metrics to help identify bloated tables:
- pg_stat_user_tables_bloat_ratio: ratio of dead to total tuples (0.0-1.0)
- pg_stat_user_tables_dead_tuple_size_bytes: estimated reclaimable space

These metrics are computed from existing pg_stat_user_tables data
(n_live_tup, n_dead_tup, table_size_bytes) without additional queries,
making it easier to identify tables needing vacuum and prioritize by
impact.

Example alerts:
- High bloat ratio: pg_stat_user_tables_bloat_ratio > 0.2
- Large waste: pg_stat_user_tables_dead_tuple_size_bytes > 1073741824

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