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Author SHA1 Message Date
Andres Freund
2589434ae0 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
 2022-10-13 09:55:46 -07:00
Tom Lane
be39d88934 Add regression test coverage for contrib/pg_buffercache. 
We can't check the output of this view very closely without
creating portability headaches, but we can make sure that
the number of rows is as-expected.  In any case, this is
sufficient to exercise all the C code within, which is a
lot better than the 0% coverage we had before.

DongWook Lee

Discussion: https://postgr.es/m/CAAcByaLCHGJB7qAENEcx9D09UL=w4ma+yijwF_-1MSqQZ9wK6Q@mail.gmail.com
 2022-07-30 15:33:44 -04:00