控制台
存储引擎
PERFORMANCE_SCHEMA
Performance Schema
PERFORMANCE_SCHEMA 在该 MySQL 服务器上可用。
| performance_schema | OFF | |
|---|---|---|
| performance_schema_accounts_size | -1 | |
| performance_schema_digests_size | -1 | |
| performance_schema_events_stages_history_long_size | -1 | |
| performance_schema_events_stages_history_size | -1 | |
| performance_schema_events_statements_history_long_size | -1 | |
| performance_schema_events_statements_history_size | -1 | |
| performance_schema_events_waits_history_long_size | -1 | |
| performance_schema_events_waits_history_size | -1 | |
| performance_schema_hosts_size | -1 | |
| performance_schema_max_cond_classes | 90 | |
| performance_schema_max_cond_instances | -1 | |
| performance_schema_max_digest_length | 1024 | |
| performance_schema_max_file_classes | 50 | |
| performance_schema_max_file_handles | 32768 | |
| performance_schema_max_file_instances | -1 | |
| performance_schema_max_mutex_classes | 200 | |
| performance_schema_max_mutex_instances | -1 | |
| performance_schema_max_rwlock_classes | 40 | |
| performance_schema_max_rwlock_instances | -1 | |
| performance_schema_max_socket_classes | 10 | |
| performance_schema_max_socket_instances | -1 | |
| performance_schema_max_stage_classes | 160 | |
| performance_schema_max_statement_classes | 202 | |
| performance_schema_max_table_handles | -1 | |
| performance_schema_max_table_instances | -1 | |
| performance_schema_max_thread_classes | 50 | |
| performance_schema_max_thread_instances | -1 | |
| performance_schema_session_connect_attrs_size | -1 | |
| performance_schema_setup_actors_size | 100 | |
| performance_schema_setup_objects_size | 100 | |
| performance_schema_users_size | -1 |