PostgreSQL 19 beta's parallel autovacuum launches workers but leaves vacuum time unchanged
8.1 relevance
Score Breakdown
technical depth 9
novelty 8
actionability 8
community 7
strategic 7
personal 8
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Detailed PostgreSQL 19 parallel autovacuum benchmark, highly technical and relevant to data engineering.
Summary
I measured PostgreSQL 19 beta4's new parallel autovacuum on a six-index, 400,000-row table: 4 workers launched every time, but wall-clock vacuum time stayed within 4% of the serial run, while dead-tuple memory doubled.