Recent Changes in the Linux I/O Stack from a DBA’s Perspective
summary
Covers recent redesigns of the Linux I/O stack that affect database administrators, explaining which kernel I/O technologies (e.g., block layer, io_uring, asynchronous I/O) and changes impact database I/O performance and operability. Describes practical implications for DBAs and how to adapt configuration and workload strategies to the new I/O stack behavior.
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chapters (7)
- 0:00Introduction
- 10:14PostgreSQL I/O problems
- 22:26I/O scheduler evolution
- 27:13Linux blk-mq introduction
- 35:26NVMe specification impact
- 37:13Kernel IO polling optimizations
- 40:21Q&A
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