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##
## Test the Performance Schema-based implementation of SHOW PROCESSLIST.
##
## Test cases:
## 1. Execute the new SHOW [FULL] PROCESSLIST and SELECT on performance_schema.processlist
## 2. Execute the legacy SHOW [FULL] PROCESSLIST and SELECT on information_schema.processlist
## 3. Verify that performance_schema_show_processlist = ON executes the new implementation
## 4. Verify that performance_schema_show_processlist = OFF executes the legacy code path
##
## Results must be manually verified.
### Setup ###
select @@global.performance_schema_show_processlist into @save_processlist;
create user user1@localhost, user2@localhost,
user3@localhost, user4@localhost;
grant ALL on *.* to user1@localhost;
grant ALL on *.* to user2@localhost;
grant ALL on *.* to user3@localhost;
grant ALL on *.* to user4@localhost;
flush privileges;
use test;
create table test.t1 (s1 int, s2 int, s3 int, s4 int);
# Switch to (con0, localhost, root, , )
insert into test.t1 values(1, 1, 1, 1);
insert into test.t1 values(2, 2, 2, 2);
insert into test.t1 values(3, 3, 3, 3);
insert into test.t1 values(4, 4, 4, 4);
# Lock test.t1, insert/update/deletes will block
lock tables t1 read;
# Connect (con1, localhost, user1, , )
insert into test.t1 values (0, 0, 0, 0);
# Connect (con2, localhost, user2, , )
update test.t1 set s1 = s1 + 1, s2 = s2 + 2, s3 = s3 + 3, s4 = ((s4 + 4) * (s4 + 5)) + 12345 + 67890 + 11111 + 22222 + 33333 + 44444 + 55555 + 99999;;
# Connect (con3, localhost, user3, , )
delete from test.t1 where s1 = 3;
# Connect (con4, localhost, user4, , )
insert into test.t1 values (4, 4, 4, 4);
# Connection default
# Wait for queries to appear in the processlist table
### Execute new SHOW [FULL] PROCESSLIST and SELECT on performance_schema.processlist
set @@global.performance_schema_show_processlist = on;
SHOW FULL PROCESSLIST;
Id User Host db Command Time State Info
<Id> event_scheduler <Host> NULL <Command> <Time> <State> NULL
<Id> root <Host> test <Command> <Time> <State> NULL
<Id> root <Host> test Query <Time> <State> SHOW FULL PROCESSLIST
<Id> user1 <Host> test Query <Time> <State> insert into test.t1 values (0, 0, 0, 0)
<Id> user2 <Host> test Query <Time> <State> update test.t1 set s1 = s1 + 1, s2 = s2 + 2, s3 = s3 + 3, s4 = ((s4 + 4) * (s4 + 5)) + 12345 + 67890 + 11111 + 22222 + 33333 + 44444 + 55555 + 99999
<Id> user3 <Host> test Query <Time> <State> delete from test.t1 where s1 = 3
<Id> user4 <Host> test Query <Time> <State> insert into test.t1 values (4, 4, 4, 4)
# Performance Schema processlist table
select * from performance_schema.processlist order by user, id;
ID USER HOST DB COMMAND TIME STATE INFO
<Id> event_scheduler <Host> NULL <Command> <Time> <State> NULL
<Id> root <Host> test Query <Time> <State> select * from performance_schema.processlist order by user, id
<Id> root <Host> test <Command> <Time> <State> NULL
<Id> user1 <Host> test Query <Time> <State> insert into test.t1 values (0, 0, 0, 0)
<Id> user2 <Host> test Query <Time> <State> update test.t1 set s1 = s1 + 1, s2 = s2 + 2, s3 = s3 + 3, s4 = ((s4 + 4) * (s4 + 5)) + 12345 + 67890 + 11111 + 22222 + 33333 + 44444 + 55555 + 99999
<Id> user3 <Host> test Query <Time> <State> delete from test.t1 where s1 = 3
<Id> user4 <Host> test Query <Time> <State> insert into test.t1 values (4, 4, 4, 4)
# Information Schema processlist table
select * from information_schema.processlist order by user, id;
ID USER HOST DB COMMAND TIME STATE INFO
<Id> event_scheduler <Host> NULL <Command> <Time> <State> NULL
<Id> root <Host> test Query <Time> <State> select * from information_schema.processlist order by user, id
<Id> root <Host> test <Command> <Time> <State> NULL
<Id> user1 <Host> test Query <Time> <State> insert into test.t1 values (0, 0, 0, 0)
<Id> user2 <Host> test Query <Time> <State> update test.t1 set s1 = s1 + 1, s2 = s2 + 2, s3 = s3 + 3, s4 = ((s4 + 4) * (s4 + 5)) + 12345 + 67890 + 11111 + 22222 + 33333 + 44444 + 55555 + 99999
<Id> user3 <Host> test Query <Time> <State> delete from test.t1 where s1 = 3
<Id> user4 <Host> test Query <Time> <State> insert into test.t1 values (4, 4, 4, 4)
### Execute legacy SHOW [FULL] PROCESSLIST and SELECT on information_schema.processlist
set @@global.performance_schema_show_processlist = off;
SHOW FULL PROCESSLIST;
Id User Host db Command Time State Info
<Id> event_scheduler <Host> NULL <Command> <Time> <State> NULL
<Id> root <Host> test <Command> <Time> <State> NULL
<Id> root <Host> test Query <Time> <State> SHOW FULL PROCESSLIST
<Id> user1 <Host> test Query <Time> <State> insert into test.t1 values (0, 0, 0, 0)
<Id> user2 <Host> test Query <Time> <State> update test.t1 set s1 = s1 + 1, s2 = s2 + 2, s3 = s3 + 3, s4 = ((s4 + 4) * (s4 + 5)) + 12345 + 67890 + 11111 + 22222 + 33333 + 44444 + 55555 + 99999
<Id> user3 <Host> test Query <Time> <State> delete from test.t1 where s1 = 3
<Id> user4 <Host> test Query <Time> <State> insert into test.t1 values (4, 4, 4, 4)
# Performance Schema processlist table
select * from performance_schema.processlist order by user, id;
ID USER HOST DB COMMAND TIME STATE INFO
<Id> event_scheduler <Host> NULL <Command> <Time> <State> NULL
<Id> root <Host> test Query <Time> <State> select * from performance_schema.processlist order by user, id
<Id> root <Host> test <Command> <Time> <State> NULL
<Id> user1 <Host> test Query <Time> <State> insert into test.t1 values (0, 0, 0, 0)
<Id> user2 <Host> test Query <Time> <State> update test.t1 set s1 = s1 + 1, s2 = s2 + 2, s3 = s3 + 3, s4 = ((s4 + 4) * (s4 + 5)) + 12345 + 67890 + 11111 + 22222 + 33333 + 44444 + 55555 + 99999
<Id> user3 <Host> test Query <Time> <State> delete from test.t1 where s1 = 3
<Id> user4 <Host> test Query <Time> <State> insert into test.t1 values (4, 4, 4, 4)
# Information Schema processlist table
select * from information_schema.processlist order by user, id;
ID USER HOST DB COMMAND TIME STATE INFO
<Id> event_scheduler <Host> NULL <Command> <Time> <State> NULL
<Id> root <Host> test Query <Time> <State> select * from information_schema.processlist order by user, id
<Id> root <Host> test <Command> <Time> <State> NULL
<Id> user1 <Host> test Query <Time> <State> insert into test.t1 values (0, 0, 0, 0)
<Id> user2 <Host> test Query <Time> <State> update test.t1 set s1 = s1 + 1, s2 = s2 + 2, s3 = s3 + 3, s4 = ((s4 + 4) * (s4 + 5)) + 12345 + 67890 + 11111 + 22222 + 33333 + 44444 + 55555 + 99999
<Id> user3 <Host> test Query <Time> <State> delete from test.t1 where s1 = 3
<Id> user4 <Host> test Query <Time> <State> insert into test.t1 values (4, 4, 4, 4)
### Verify feature code path
# Enable SHOW PROCESSLIST via the Performance Schema
set @@global.performance_schema_show_processlist = on;
# Connection default, send SHOW PROCESSLIST
SET DEBUG_SYNC='pfs_show_processlist_performance_schema SIGNAL pfs_processlist_pfs WAIT_FOR continue';
SHOW FULL PROCESSLIST;
# Connection con0
SET DEBUG_SYNC='now WAIT_FOR pfs_processlist_pfs';
SET DEBUG_SYNC='now SIGNAL continue';
# Connection default, reap
Id User Host db Command Time State Info
<Id> event_scheduler <Host> NULL <Command> <Time> <State> <Info>
<Id> root <Host> test <Command> <Time> <State> <Info>
<Id> root <Host> test <Command> <Time> <State> <Info>
<Id> user1 <Host> test <Command> <Time> <State> <Info>
<Id> user2 <Host> test <Command> <Time> <State> <Info>
<Id> user3 <Host> test <Command> <Time> <State> <Info>
<Id> user4 <Host> test <Command> <Time> <State> <Info>
### Verify legacy code path
# Enable the legacy SHOW PROCESSLIST
set @@global.performance_schema_show_processlist = off;
# Connection default, send SHOW PROCESSLIST
SET DEBUG_SYNC='RESET';
SET DEBUG_SYNC='pfs_show_processlist_legacy SIGNAL pfs_processlist_legacy WAIT_FOR continue';
SHOW FULL PROCESSLIST;
# Connection con0
SET DEBUG_SYNC='now WAIT_FOR pfs_processlist_legacy';
SET DEBUG_SYNC='now SIGNAL continue';
# Connection default, reap
Id User Host db Command Time State Info
<Id> event_scheduler <Host> NULL <Command> <Time> <State> <Info>
<Id> root <Host> test <Command> <Time> <State> <Info>
<Id> root <Host> test <Command> <Time> <State> <Info>
<Id> user1 <Host> test <Command> <Time> <State> <Info>
<Id> user2 <Host> test <Command> <Time> <State> <Info>
<Id> user3 <Host> test <Command> <Time> <State> <Info>
<Id> user4 <Host> test <Command> <Time> <State> <Info>
### Clean up ###
# Connection con0, unlock test.t1, disconnect
unlock tables;
# Connection con1, reap, disconnect
# Connection con2, reap, disconnect
# Connection con3, reap, disconnect
# Connection con4, reap, disconnect
# Connection default
drop table test.t1;
drop user user1@localhost;
drop user user2@localhost;
drop user user3@localhost;
drop user user4@localhost;
set @@global.performance_schema_show_processlist = @save_processlist;
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