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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Summary
Benchmarking databases is a very extensive topic, and this chapter just introduces the major concepts. Having the pgbench tool bundled with the database is handy for doing smaller tests, but you need to be careful of its limitations before you rely too much on its results for your tuning efforts.
- The basis for the built-in
pgbenchtests is outdated, and it's unlikely to match real-world performance. It can still be useful as a synthetic performance test. - You can write your own custom tests, either against the standard
pgbenchtables or new ones, and use thepgbenchscripting capability to run those tests against multiple clients at once. - Only a small number of the general database settings will impact
pgbenchresults, since its queries are ...
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