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
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
# Tests for PERFORMANCE_SCHEMA
--source include/not_embedded.inc
--source include/have_perfschema.inc
--source ../include/start_server_common.inc
#############################
# Setup database and tables.
#############################
--disable_warnings
drop table if exists db1.t1;
drop database if exists db1;
--enable_warnings
create database db1;
create table db1.t1 (a int, b char(10) default 'default',
unique key uidx(a));
#######################
# Execute few queries.
#######################
insert into db1.t1 values('1', 'abc');
insert into db1.t1 values('2', 'abc');
--disable_ps2_protocol
select * from db1.t1 where a='1';
--enable_ps2_protocol
#####################################################
# Run few queries on Performance Schema stats tables.
#####################################################
# There should be 3 entries in following table. 2 for insert and 1 for select.
# This is because lock stats are still in the table handles
select COUNT_STAR from performance_schema.table_io_waits_summary_by_table
where OBJECT_SCHEMA='db1' and OBJECT_NAME='t1';
# There should be 1 entry in following table. Thats is for select.
# This is because lock stats are still in the table handles
select COUNT_STAR from performance_schema.table_io_waits_summary_by_index_usage
where INDEX_NAME!='NULL';
# Now force aggregation by closing table handles
FLUSH TABLES;
# Stats are now missing
select COUNT_STAR from performance_schema.table_io_waits_summary_by_table
where OBJECT_SCHEMA='db1' and OBJECT_NAME='t1';
# Stats are now missing
select COUNT_STAR from performance_schema.table_io_waits_summary_by_index_usage
where INDEX_NAME!='NULL';
# Expect INDEX_STAT lost
--disable_warnings
select variable_value > 0 from information_schema.global_status
where variable_name like 'PERFORMANCE_SCHEMA_INDEX_STAT_LOST';
# While at it, check that FLUSH GLOBAL STATUS Resets the lost counter
FLUSH GLOBAL STATUS;
select variable_value from information_schema.global_status
where variable_name like 'PERFORMANCE_SCHEMA_INDEX_STAT_LOST';
--enable_warnings
###########
# Cleanup.
###########
drop database db1;
|
