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Tuning Advisor: innodb_io_capacity / innodb_io_capacity_max #260

Closed gordan-bobic closed 2 months ago

gordan-bobic commented 3 months ago

I'm seeing proposals that say:

innodb_io_capacity = 5000
innodb_io_capacity_max = 4096

That seems wrong, innodb_io_capacity_max must always be smaller than innodb_io_capacity.

innodb_io_capacity_max: 75% of inferred max iops based on peak disk I/O stats and corresponding disk I/O saturation observed recently. Round down to nearest 500. innodb_io_capacity: 50% of inferred max iops based on peak disk I/O stats and corresponding disk I/O saturation observed recently. Round down to nearest 500.

Never less than defaults (2000 and 200 respectively).