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author	Andres Freund <andres@anarazel.de>
	Thu, 13 Oct 2022 16:55:46 +0000 (09:55 -0700)
committer	Andres Freund <andres@anarazel.de>
	Thu, 13 Oct 2022 16:55:46 +0000 (09:55 -0700)
commit	2589434ae0fbfe08e46b6a4ffba400140b636074
tree	495f2f835d353c17bb4a0f4c65e487487484484f	tree
parent	7f8d9cedb374c9a23f0730f92a0b88d479325ba9	commit \| diff

pg_buffercache: Add pg_buffercache_summary()

Using pg_buffercache_summary() is significantly cheaper than querying
pg_buffercache and summarizing in SQL.

Author: Melih Mutlu <m.melihmutlu@gmail.com>
Reviewed-by: Andres Freund <andres@anarazel.de>
Reviewed-by: Aleksander Alekseev <aleksander@timescale.com>
Reviewed-by: Zhang Mingli <zmlpostgres@gmail.com>
Discussion: https://postgr.es/m/CAGPVpCQAXYo54Q%3D8gqBsS%3Du0uk9qhnnq4%2B710BtUhUisX1XGEg%40mail.gmail.com

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