February 2020
Intermediate to advanced
734 pages
38h 13m
English
Content preview from PostgreSQL 12 High Availability Cookbook - Third Edition
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Clock boosting
Recent processors also tend to provide adaptive CPU clock boosting based on perceived workload. Some vendor motherboards disable this by default.
Make sure to go through the BIOS settings before performing acceptability tests, as this functionality can provide up to 25% better performance in isolated cases.
This is possible because the maximum speed of the core itself is increased when resources are available or demand is high. A 4.2 GHz core might operate temporarily at 4.5 GHz. For queries that are dependent on nested loops or other CPU-intensive operations, this can drastically reduce query execution times.
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