PostgreSQL 19 introduces support for kernel-level asynchronous I/O using Linux's io_uring, offering an alternative to its traditional asynchronous sequential scan workers. The article demonstrates configuring and testing this feature within a Docker environment to bypass seccomp restrictions, highlighting new configuration parameters like io_method and concurrency limits.
Background
PostgreSQL has historically managed asynchronous I/O through its own background worker processes. The integration of io_uring allows the database to leverage modern Linux kernel capabilities for more efficient buffered I/O operations.
- Source
- Lobsters
- Published
- Jul 2, 2026 at 08:46 PM
- Score
- 7.0 / 10