A detailed performance comparison between modern PostgreSQL and MySQL using write-heavy sysbench tests on a large server reveals significant throughput variations in PostgreSQL across versions 15-18, while MySQL+InnoDB shows more consistent performance. The tests show InnoDB achieving better average throughput in 6 out of 10 tests, with PostgreSQL performing better in only 3 tests. The analysis includes detailed hardware specifications and configuration details, noting that PostgreSQL generally performs more write I/O per operation, though CPU usage varies between the two databases.
Background
Database performance benchmarking is crucial for understanding how different database systems handle various workloads, especially in write-heavy scenarios. PostgreSQL and MySQL are two of the most popular open-source relational database management systems, often compared for their performance characteristics.
- Source
- Lobsters
- Published
- Jun 14, 2026 at 11:38 PM
- Score
- 7.0 / 10