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Displaying posts with tag: Performance optimization (reset)

MySQL performance optimization: Don’t guess! Measure with Percona Cloud Tools
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In our practice we often see that MySQL performance optimization is done in a sort of “black magic” way. A common opinion is: “If there is a performance problem – then it must be a database issue, because what else could it be? And if this is a database issue, then it must involve IO problems because the reason for a slow database is always a slow IO…”  Following this logic might actually give a result, but achieving a fully successful resolution would require magic.

At Percona we use a different approach. Performance optimization should not be based on guesses, but exact measurements. In application to databases,

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