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PostgreSQL 10 Administration Cookbook - Fourth Edition
book

PostgreSQL 10 Administration Cookbook - Fourth Edition

by Simon Riggs, Gianni Ciolli
May 2018
Intermediate to advanced content levelIntermediate to advanced
576 pages
30h 25m
English
Packt Publishing
Content preview from PostgreSQL 10 Administration Cookbook - Fourth Edition

How it works…

The collect_deltas() function makes static copies of the pg_stat_user_tables, pg_statio_user_tables, pg_stat_user_indexes, and pg_statio_user_indexes tables at each run. It then compares the current copies with the copies saved at the last run, and saves the timestamped deltas in the stat_user_tables_delta_log and stat_user_indexes_delta_log log tables. These tables can then be analyzed later to get an insight into access and I/O patterns.

The latest set of deltas is also kept in the stat_user_tables_delta and stat_user_indexes_delta tables, which can be used for external monitoring systems, such as Cacti, to get a graphical representation of it.

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Publisher Resources

ISBN: 9781788474924Supplemental Content