November 2019
Beginner to intermediate
470 pages
11h 59m
English
Content preview from Mastering PostgreSQL 12 - Third Edition
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Digging deeper with perf
In most cases, working through this tiny checklist will help you track down the majority of problems in a pretty fast and efficient way. However, even the information that's been extracted from the database engine is sometimes not enough.
The perf tool is an analysis tool for Linux that allows you to directly see which C functions are causing problems on your system. Usually, perf is not installed by default, so it is recommended that you install it. To use perf on your server, just log in to a root and run the following command:
perf top
The screen will refresh itself every couple of seconds, and you will have a chance to see what is going on live. The following listing shows you what a standard, read-only benchmark ...
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