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Important

You are viewing the documentation of TiDB v8.2 (DMR). PingCAP does not provide bug fixes for v8.2. Any bugs will be fixed in future releases. For general purposes, please use the latest LTS version of the TiDB database.

Performance Schema

TiDB implements performance schema tables for MySQL compatibility.

Tables for MySQL compatibility

Table name	Description
`events_stages_current`
`events_stages_history`
`events_stages_history_long`
`events_statements_current`
`events_statements_history`
`events_statements_history_long`
`events_statements_summary_by_digest`
`events_transactions_current`
`events_transactions_history`
`events_transactions_history_long`
`global_status`
`prepared_statements_instances`
`session_connect_attrs`	Provides connection attributes for sessions.
`session_status`
`session_variables`
`setup_actors`
`setup_consumers`
`setup_instruments`
`setup_objects`

Tables that are TiDB extensions

Table name	Description
`pd_profile_allocs`
`pd_profile_block`
`pd_profile_cpu`
`pd_profile_goroutines`
`pd_profile_memory`
`pd_profile_mutex`
`tidb_profile_allocs`
`tidb_profile_block`
`tidb_profile_cpu`
`tidb_profile_goroutines`
`tidb_profile_memory`
`tidb_profile_mutex`
`tikv_profile_cpu`

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