October 2010
Intermediate to advanced
468 pages
11h 35m
English
Content preview from PostgreSQL 9.0 High PerformanceBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Detailed data and index page monitoring
If you really want to get deep into just what's happening with the disk space use on your server, there are a few more PostgreSQL contrib modules that provide additional information available:
pgstattuple: Maybe you don't trust the running estimates for dead rows the database is showing. Or perhaps you just want to see how they are distributed. This information and lots of other tuple-level data is available using thepgstattuplemodule. The module includes functions to give detailed analysis of both regular row tuple data and index pages, which lets you dig into trivia like exactly how the B-tree indexes on your server were built.pg_freespacemap: Lets you look at each page of a relation (table or index) ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.