April 2018
Intermediate to advanced
508 pages
15h 22m
English
Content preview from PostgreSQL 10 High Performance - Third Edition
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pgstatspack
A slightly different spin on database monitoring than the rest of the packages listed here, pgstatspack does exactly what last chapter's pg_stat_bgwriter example did: it just saves periodic snapshots of the PostgreSQL statistics into tables for later analysis. The design was influenced by the very popular statspack utilities for Oracle.
The main problem with this approach from my personal perspective fall into three categories:
- Database statistics alone are not sufficient to solve complicated performance issues. You have to collect operating system-level information, too.
- Aggregating snapshots stored in this fashion into different time scales is a harder problem to solve than it appears at first. The reason why programs like ...
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