The Ultimate Guide to High Availability with MariaDB

PERFORMANCE_SCHEMA 存储引擎

如果您运行SHOW ENGINES命令，您将看到以下存储引擎列表。

SHOW ENGINES\G
...
      Engine: PERFORMANCE_SCHEMA
     Support: YES
     Comment: Performance Schema
Transactions: NO
          XA: NO
  Savepoints: NO
...

PERFORMANCE_SCHEMA 不是用于存储数据的常规存储引擎，它是实现性能模式Performance Schema功能的机制。

还可以使用 SHOW ENGINE PERFORMANCE_SCHEMA STATUS 命令，该命令显示表和内部缓冲区使用的内存量。

有关详细信息，请参见 Performance Schema。

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