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I have a big load on my MySQL database.

With NetData ( https://github.com/firehol/netdata ), I saw that the handler "Read Next" sometimes jumps from 30-50 to 4M !

How can I log the concerned queries (concerned by read-next jumps), or detect what could cause this in any way ?

Thanks ahead

Yves Denan
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  • See https://stackoverflow.com/questions/2403793/how-can-i-enable-mysqls-slow-query-log-without-restarting-mysql – Adder Jun 07 '17 at 11:31
  • Thanks but I'm already logging the slow-queries ! I just now to know which queries are using my RAM – Yves Denan Jun 07 '17 at 11:32

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