Combined I/O Enhancement in PostgreSQL 17

Explore the groundbreaking performance enhancements in PostgreSQL 17 through this informative video. Dive into the new feature of combined I/O operations, which allows for multiple page reads in a single system call. Learn how this improvement can significantly reduce overhead and potentially boost database performance. Understand the mechanics behind fixed-size pages in PostgreSQL, the current process of reading pages, and how the new feature changes this paradigm. Examine the benefits and potential challenges of combining I/Os, including the trade-offs between improved efficiency and potential waste of resources. Gain insights into kernel read-ahead, the intricacies of page reads in PostgreSQL, and how combining page reads works in practice. Conclude with a summary of the implications of this feature for database performance and future optimizations.

Intro
Combined IO summarized
Kernel read-ahead
A Page read in Postgres
Combining page rads
Summary