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pg_buffercache: Add pg_buffercache_summary()

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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
This commit is contained in:
Andres Freund
2022-10-13 09:55:46 -07:00
parent 7f8d9cedb3
commit 2589434ae0
8 changed files with 250 additions and 5 deletions
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contrib/pg_buffercache/meson.build
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@@ -19,6 +19,7 @@ install_data(
'pg_buffercache--1.1--1.2.sql',
'pg_buffercache--1.2--1.3.sql',
'pg_buffercache--1.2.sql',
'pg_buffercache--1.3--1.4.sql',
'pg_buffercache.control',
kwargs: contrib_data_args,
)