From 03c53a73141aa0e0ee6b0c7642671c1e972bae32 Mon Sep 17 00:00:00 2001 From: Bruce Momjian Date: Thu, 29 May 2025 12:37:05 -0400 Subject: [PATCH] doc PG 18 relnotes: modify async I/O item for other improvements Add "etc." to indicate other actions will also be improved by asynchronous I/O. Reported-by: Melanie Plageman Discussion: https://postgr.es/m/CAAKRu_bqjgSYA+OdemL-X91Yv53OwsVARZy+-tRyj8YQ=kcj0A@mail.gmail.com --- doc/src/sgml/release-18.sgml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/doc/src/sgml/release-18.sgml b/doc/src/sgml/release-18.sgml index 718f7b20bf1..3315ea52def 100644 --- a/doc/src/sgml/release-18.sgml +++ b/doc/src/sgml/release-18.sgml @@ -569,7 +569,7 @@ Add an asynchronous I/O subsystem (Andres Freund, Thomas Munro, Nazir Bilal Yavu -This feature allows backends to queue multiple read requests, which allows for more efficient sequential scans, bitmap heap scans, and vacuums. +This feature allows backends to queue multiple read requests, which allows for more efficient sequential scans, bitmap heap scans, vacuums, etc. This is enabled by server variable io_method, with server variables io_combine_limit and io_max_combine_limit added to control it. This also enables effective_io_concurrency and maintenance_io_concurrency values greater than zero for systems without fadvise() support. The new system view pg_aios shows the file handles being used for asynchronous I/O.