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mirror of https://github.com/postgres/postgres.git synced 2025-06-10 09:21:54 +03:00

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
This commit is contained in:
Bruce Momjian 2025-05-29 12:37:05 -04:00
parent 470273da0f
commit 03c53a7314

View File

@ -569,7 +569,7 @@ Add an asynchronous I/O subsystem (Andres Freund, Thomas Munro, Nazir Bilal Yavu
</para>
<para>
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.