Uncached buffered IO

From: wenhui qiu <qiuwenhuifx(at)gmail(dot)com>
To: pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Uncached buffered IO
Date: 2025-02-10 03:39:14
Message-ID: CAGjGUAJvC_GPHRYtQUN=xC4XE9SJpGQpqxrKC2qhT+=kof8jgA@mail.gmail.com
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Hi Hackers.
https://lwn.net/Articles/998783/ , is Uncached buffered IO useful for
double cache?PostgreSQL's double caching is often a source of complaints.
This new Linux kernel feature seems to help mitigate performance jitters
caused by file cache reclaim when memory free memory is too small.

Thanks

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