January 2019
Intermediate to advanced
286 pages
7h 41m
English
Content preview from Advanced MySQL 8
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How to detect high usage of the MySQL processor
Very often, DBAs or developers think that a high workload in MySQL is because of the high use of processors. This is not always true. The workload in a server may increase due to bottlenecks caused by any resource.
The main reason for MySQL server load is due to the depletion of memory or input/output usage. If the bottleneck is at the CPU level, the output of the top command (Linux system) will look as follows:
If it is an input/output-induced bottleneck, %wa (called wait average) will have the highest-percentage CPU. On the other hand, if it is a charge caused by the memory, free memory will ...
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