This is a read-only copy of the MariaDB Knowledgebase generated on 2024-11-21. For the latest, interactive version please visit https://mariadb.com/kb/.

Lo Storage Engine PERFORMANCE_SCHEMA

Se si esegue SHOW ENGINES su una versione di MariaDB che supporta il Performance Schema, si noterà nell'elenco il seguente Storage Engine.

SHOW ENGINES;
+--------------------+---------+----------------------------------+--------------+------+------------+
| Engine             | Support | Comment                          | Transactions | XA   | Savepoints |
+--------------------+---------+----------------------------------+--------------+------+------------+
| ...                |         |                                  |              |      |            |
| PERFORMANCE_SCHEMA | YES     | Performance Schema               | NO           | NO   | NO         |
| ...                |         |                                  |              |      |            |
+--------------------+---------+----------------------------------+--------------+------+------------+

Tuttavia PERFORMANCE_SCHEMA non è un normale Storage Engine per registrare i dati, ma è un meccanismo per implementare la funzionalità Performance Schema.

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