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Tag: tuning

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Here you can find all blog posts about the Tag: tuning. You can go back to all blog posts or take a look into our other categories & tags.

Speeding up things with hint bits

by Hans-Jürgen Schönig | 08.2014
UPDATED June 2023: What are hint bits in PostgreSQL? Hint bits improve PostgreSQL performance - find out why and how. Includes code examples.

Optimization issues: Cross column correlation

by Hans-Jürgen Schönig | 07.2014
UPDATED Sept. 2023 - A couple of years ago I stumbled over an interesting PostgreSQL issue which is commonly known as “cross correlation”.

Detecting wrong planner estimates

by Hans-Jürgen Schönig | 07.2014
The PostgreSQL planner optimizes your queries, and mostly does it right. The question is: How to figure out when & where things do go wrong?

Logging - the hidden speedbrakes

by Hans-Jürgen Schönig | 03.2014
When it comes to performance, people tend to forget some basic topics entirely. One of those topics is the impact of writing log files.

PostgreSQL 9.3 - Shared Buffers Performance (1)

by Hans-Jürgen Schönig | 02.2014
A lot has been said about PostgreSQL shared buffers and performance. As my new desktop box has arrived this week […]

Functions: The most widely ignored performance tweak

by Hans-Jürgen Schönig | 05.2013
A PostgreSQL function performance can be marked as follows: VOLATILE, STABLE, IMMUTABLE or [NOT] LEAKPROOF. Undestand why.
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