您应该对性能_schema特性的使用有基本了解，例如，您应该知道如何启用仪器和消费者，以及如何查询performance_schema表来检索数据。对于简介，请见第29.1节，“性能_schema快速入门”.

您应该熟悉InnoDB的性能_schema仪器。要查看InnoDB-相关仪器，可以查询setup_instruments表，查找包含'innodb'的仪器名称。

mysql> SELECT *
       FROM performance_schema.setup_instruments
       WHERE NAME LIKE '%innodb%';
+-------------------------------------------------------+---------+-------+
| NAME                                                  | ENABLED | TIMED |
+-------------------------------------------------------+---------+-------+
| wait/synch/mutex/innodb/commit_cond_mutex             | NO      | NO    |
| wait/synch/mutex/innodb/innobase_share_mutex          | NO      | NO    |
| wait/synch/mutex/innodb/autoinc_mutex                 | NO      | NO    |
| wait/synch/mutex/innodb/buf_pool_mutex                | NO      | NO    |
| wait/synch/mutex/innodb/buf_pool_zip_mutex            | NO      | NO    |
| wait/synch/mutex/innodb/cache_last_read_mutex         | NO      | NO    |
| wait/synch/mutex/innodb/dict_foreign_err_mutex        | NO      | NO    |
| wait/synch/mutex/innodb/dict_sys_mutex                | NO      | NO    |
| wait/synch/mutex/innodb/recalc_pool_mutex             | NO      | NO    |
...
| wait/io/file/innodb/innodb_data_file                  | YES     | YES   |
| wait/io/file/innodb/innodb_log_file                   | YES     | YES   |
| wait/io/file/innodb/innodb_temp_file                  | YES     | YES   |
| stage/innodb/alter table (end)                        | YES     | YES   |
| stage/innodb/alter table (flush)                      | YES     | YES   |
| stage/innodb/alter table (insert)                     | YES     | YES   |
| stage/innodb/alter table (log apply index)            | YES     | YES   |
| stage/innodb/alter table (log apply table)            | YES     | YES   |
| stage/innodb/alter table (merge sort)                 | YES     | YES   |
| stage/innodb/alter table (read PK and internal sort)  | YES     | YES   |
| stage/innodb/buffer pool load                         | YES     | YES   |
| memory/innodb/buf_buf_pool                            | NO      | NO    |
| memory/innodb/dict_stats_bg_recalc_pool_t             | NO      | NO    |
| memory/innodb/dict_stats_index_map_t                  | NO      | NO    |
| memory/innodb/dict_stats_n_diff_on_level              | NO      | NO    |
| memory/innodb/other                                   | NO      | NO    |
| memory/innodb/row_log_buf                             | NO      | NO    |
| memory/innodb/row_merge_sort                          | NO      | NO    |
| memory/innodb/std                                     | NO      | NO    |
| memory/innodb/sync_debug_latches                      | NO      | NO    |
| memory/innodb/trx_sys_t::rw_trx_ids                   | NO      | NO    |
...
+-------------------------------------------------------+---------+-------+
155 rows in set (0.00 sec)

关于instrumentedInnoDB对象的additional信息，可以查询性能_schema实例表，这些表提供了关于instrumented对象的additional信息。与InnoDB相关的实例表包括：

例如，要查看性能chema在执行文件I/Oinstrumentation时对InnoDB文件对象的信息，您可能需要发出以下查询：

mysql> SELECT *
       FROM performance_schema.file_instances
       WHERE EVENT_NAME LIKE '%innodb%'\G
*************************** 1. row ***************************
 FILE_NAME: /home/dtprice/mysql-8.4/data/ibdata1
EVENT_NAME: wait/io/file/innodb/innodb_data_file
OPEN_COUNT: 3
*************************** 2. row ***************************
 FILE_NAME: /home/dtprice/mysql-8.4/data/#ib_16384_0.dblwr
EVENT_NAME: wait/io/file/innodb/innodb_dblwr_file
OPEN_COUNT: 2
*************************** 3. row ***************************
 FILE_NAME: /home/dtprice/mysql-8.4/data/#ib_16384_1.dblwr
EVENT_NAME: wait/io/file/mysql-8.4/innodb_dblwr_file
OPEN_COUNT: 2
...

您应该熟悉存储InnoDB事件数据的performance_schema表。与InnoDB相关事件的表包括：

如果您只对InnoDB-相关对象感兴趣，请在查询这些表时使用子句WHERE EVENT_NAME LIKE '%innodb%'或WHERE NAME LIKE '%innodb%'(如需)。