performance_schema 的簡易用法

Mark Callaghan 寫了篇關於 performance_schema 的用法 (很短),讓大家先把這個參數開習慣,雖是入門推廣班:「Short guide on using performance_schema for user & table stats」。

他推薦的兩個資訊是:

select * from table_io_waits_summary_by_table
select * from events_statements_summary_by_account_by_event_name

當使用 5.7+ 時,可以考慮這兩個:

SELECT * FROM sys.schema_table_statistics
SELECT * FROM sys.user_summary

簡單到不行,但卻可以幫不少忙... 很棒的入門推廣班 XDDD

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