blob: 7892c6ba75311afbc6efea71a7500aafda71f355 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
show databases;
Database
information_schema
mtr
mysql
performance_schema
test
select count(*) from performance_schema.performance_timers;
count(*)
5
select count(*) from performance_schema.setup_consumers;
count(*)
12
select count(*) > 3 from performance_schema.setup_instruments;
count(*) > 3
1
select count(*) from performance_schema.setup_timers;
count(*)
4
show engine PERFORMANCE_SCHEMA status;
show status like "performance_schema%";
show variables like "performance_schema_max_rwlock_classes";
Variable_name Value
performance_schema_max_rwlock_classes 40
select count(*) > 0 from performance_schema.setup_instruments
where name like "wait/synch/rwlock/%";
count(*) > 0
1
show status like "performance_schema_rwlock_classes_lost";
Variable_name Value
Performance_schema_rwlock_classes_lost 0
show variables like "performance_schema_max_rwlock_instances";
Variable_name Value
performance_schema_max_rwlock_instances 0
select count(*) from performance_schema.rwlock_instances;
count(*)
0
select variable_value > 0 from information_schema.global_status
where variable_name like 'PERFORMANCE_SCHEMA_RWLOCK_INSTANCES_LOST';
variable_value > 0
1
|