MySQL has feature of logging all sql queries - General log.
But this log does not contain queries durations.
How to log all sql queries to analyze those durations?
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The is some mysql-slow.log or similar, it logs the queries whose execution time was longer as a specific duration. You can configure this value. I can't remember the exact details, probably it is somewhere in my.cnf. Hopefully others will give you a full-featured answer.– peterhAug 14 '18 at 17:09
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I got an answer after writing a question, but i want to share it to community.
Just set up Slow log and set SET GLOBAL long_query_time = 0.
You will see all sql queries with durations in slow log file.
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And once you have done that, use
pt-query-digestormysqldumpslow -s tto discover the 'worst' queries and deal with them. Aug 25 '18 at 15:05