1show databases;
2Database
3information_schema
4mtr
5mysql
6performance_schema
7sys
8test
9select count(*) from performance_schema.performance_timers;
10count(*)
115
12select count(*) from performance_schema.setup_consumers;
13count(*)
1415
15select count(*) > 4 from performance_schema.setup_instruments;
16count(*) > 4
171
18select count(*) from performance_schema.setup_timers;
19count(*)
205
21Warnings:
22Warning	1681	'performance_schema.setup_timers' is deprecated and will be removed in a future release.
23select * from performance_schema.accounts;
24select * from performance_schema.cond_instances;
25select * from performance_schema.events_stages_current;
26select * from performance_schema.events_stages_history;
27select * from performance_schema.events_stages_history_long;
28select * from performance_schema.events_stages_summary_by_account_by_event_name;
29select * from performance_schema.events_stages_summary_by_host_by_event_name;
30select * from performance_schema.events_stages_summary_by_thread_by_event_name;
31select * from performance_schema.events_stages_summary_by_user_by_event_name;
32select * from performance_schema.events_stages_summary_global_by_event_name;
33select * from performance_schema.events_statements_current;
34select * from performance_schema.events_statements_history;
35select * from performance_schema.events_statements_history_long;
36select * from performance_schema.events_statements_summary_by_account_by_event_name;
37select * from performance_schema.events_statements_summary_by_digest;
38select * from performance_schema.events_statements_summary_by_host_by_event_name;
39select * from performance_schema.events_statements_summary_by_thread_by_event_name;
40select * from performance_schema.events_statements_summary_by_user_by_event_name;
41select * from performance_schema.events_statements_summary_global_by_event_name;
42select * from performance_schema.events_transactions_current;
43select * from performance_schema.events_transactions_history;
44select * from performance_schema.events_transactions_history_long;
45select * from performance_schema.events_transactions_summary_by_account_by_event_name;
46select * from performance_schema.events_transactions_summary_by_host_by_event_name;
47select * from performance_schema.events_transactions_summary_by_thread_by_event_name;
48select * from performance_schema.events_transactions_summary_by_user_by_event_name;
49select * from performance_schema.events_transactions_summary_global_by_event_name;
50select * from performance_schema.events_waits_current;
51select * from performance_schema.events_waits_history;
52select * from performance_schema.events_waits_history_long;
53select * from performance_schema.events_waits_summary_by_account_by_event_name;
54select * from performance_schema.events_waits_summary_by_host_by_event_name;
55select * from performance_schema.events_waits_summary_by_instance;
56select * from performance_schema.events_waits_summary_by_thread_by_event_name;
57select * from performance_schema.events_waits_summary_by_user_by_event_name;
58select * from performance_schema.events_waits_summary_global_by_event_name;
59select * from performance_schema.memory_summary_by_account_by_event_name;
60select * from performance_schema.memory_summary_by_host_by_event_name;
61select * from performance_schema.memory_summary_by_thread_by_event_name;
62select * from performance_schema.memory_summary_by_user_by_event_name;
63select * from performance_schema.memory_summary_global_by_event_name;
64select * from performance_schema.file_instances;
65select * from performance_schema.file_summary_by_event_name;
66select * from performance_schema.file_summary_by_instance;
67select * from performance_schema.host_cache;
68select * from performance_schema.hosts;
69select * from performance_schema.memory_summary_by_account_by_event_name;
70select * from performance_schema.memory_summary_by_host_by_event_name;
71select * from performance_schema.memory_summary_by_thread_by_event_name;
72select * from performance_schema.memory_summary_by_user_by_event_name;
73select * from performance_schema.memory_summary_global_by_event_name;
74select * from performance_schema.metadata_locks;
75select * from performance_schema.mutex_instances;
76select * from performance_schema.objects_summary_global_by_type;
77select * from performance_schema.performance_timers;
78select * from performance_schema.rwlock_instances;
79select * from performance_schema.session_account_connect_attrs;
80select * from performance_schema.session_connect_attrs;
81select * from performance_schema.setup_actors;
82select * from performance_schema.setup_consumers;
83select * from performance_schema.setup_instruments;
84select * from performance_schema.setup_objects;
85select * from performance_schema.setup_timers;
86select * from performance_schema.socket_instances;
87select * from performance_schema.socket_summary_by_instance;
88select * from performance_schema.socket_summary_by_event_name;
89select * from performance_schema.table_handles;
90select * from performance_schema.table_io_waits_summary_by_index_usage;
91select * from performance_schema.table_io_waits_summary_by_table;
92select * from performance_schema.table_lock_waits_summary_by_table;
93select * from performance_schema.threads;
94select * from performance_schema.users;
95select * from performance_schema.replication_connection_configuration;
96select * from performance_schema.replication_connection_status;
97select * from performance_schema.replication_applier_configuration;
98select * from performance_schema.replication_applier_status;
99select * from performance_schema.replication_applier_status_by_coordinator;
100select * from performance_schema.replication_applier_status_by_worker;
101select * from performance_schema.global_status;
102select * from performance_schema.status_by_thread;
103select * from performance_schema.status_by_user;
104select * from performance_schema.status_by_host;
105select * from performance_schema.status_by_account;
106select * from performance_schema.session_status;
107select * from performance_schema.global_variables;
108select * from performance_schema.variables_by_thread;
109select * from performance_schema.session_variables;
110show global variables where
111`Variable_name` != "performance_schema_max_statement_classes" and
112`Variable_name` like "performance_schema%";
113Variable_name	Value
114performance_schema	ON
115performance_schema_accounts_size	100
116performance_schema_digests_size	200
117performance_schema_events_stages_history_long_size	1000
118performance_schema_events_stages_history_size	10
119performance_schema_events_statements_history_long_size	1000
120performance_schema_events_statements_history_size	10
121performance_schema_events_transactions_history_long_size	1000
122performance_schema_events_transactions_history_size	10
123performance_schema_events_waits_history_long_size	10000
124performance_schema_events_waits_history_size	10
125performance_schema_hosts_size	100
126performance_schema_max_cond_classes	80
127performance_schema_max_cond_instances	-1
128performance_schema_max_digest_length	1024
129performance_schema_max_file_classes	80
130performance_schema_max_file_handles	32768
131performance_schema_max_file_instances	-1
132performance_schema_max_index_stat	-1
133performance_schema_max_memory_classes	400
134performance_schema_max_metadata_locks	-1
135performance_schema_max_mutex_classes	250
136performance_schema_max_mutex_instances	-1
137performance_schema_max_prepared_statements_instances	-1
138performance_schema_max_program_instances	-1
139performance_schema_max_rwlock_classes	50
140performance_schema_max_rwlock_instances	-1
141performance_schema_max_socket_classes	0
142performance_schema_max_socket_instances	-1
143performance_schema_max_sql_text_length	1024
144performance_schema_max_stage_classes	150
145performance_schema_max_statement_stack	10
146performance_schema_max_table_handles	-1
147performance_schema_max_table_instances	-1
148performance_schema_max_table_lock_stat	-1
149performance_schema_max_thread_classes	50
150performance_schema_max_thread_instances	-1
151performance_schema_session_connect_attrs_size	2048
152performance_schema_setup_actors_size	100
153performance_schema_setup_objects_size	100
154performance_schema_users_size	100
155show engine PERFORMANCE_SCHEMA status;
156show global status like "performance_schema%";
157show global variables like "performance_schema_max_socket_classes";
158Variable_name	Value
159performance_schema_max_socket_classes	0
160select count(*) from performance_schema.setup_instruments
161where name like "wait/io/socket/%";
162count(*)
1630
164select variable_value > 0 from information_schema.global_status
165where variable_name like 'PERFORMANCE_SCHEMA_SOCKET_CLASSES_LOST';
166variable_value > 0
1671
168select count(*) from performance_schema.socket_instances;
169count(*)
1700
171show global status like "performance_schema_socket_instances_lost";
172Variable_name	Value
173Performance_schema_socket_instances_lost	0
174