What Is Autovacuum?
PostgreSQL's background daemon that removes dead tuples and updates statistics automatically. This helps prevent table bloat and ensures consistent query performance.
Why It Matters for PostgreSQL Performance
In PostgreSQL performance work, Autovacuum affects throughput, latency, or operational reliability depending on workload and configuration.
Practical Benchmarking Context
When benchmarking with pgbench, track how Autovacuum changes behavior across scale factor, client concurrency, and storage conditions.
Use this term together with workload shape, concurrency level, and scale factor when interpreting pgbench outputs. Isolated values can be misleading without full run context.
Example
Configuration: autovacuum = on Related: autovacuum_naptime , autovacuum_vacuum_threshold