mirror of
https://github.com/MariaDB/server.git
synced 2025-08-31 22:22:30 +03:00
1cc7befc14
MDEV-7399: Add support for INFORMATION_SCHEMA.INNODB_MUTEXES
MDEV-7618: Improve semaphore instrumentation
Introduced two new information schema tables to monitor mutex waits
and semaphore waits. Added a new configuration variable
innodb_intrument_semaphores to add thread_id, file name and
line of current holder of mutex/rw_lock.
22 lines
713 B
Plaintext
22 lines
713 B
Plaintext
create table t1(a int not null primary key, b int, c int,d CHAR(100)) engine=innodb;
|
|
create procedure innodb_insert_proc (repeat_count int)
|
|
begin
|
|
declare current_num int;
|
|
set current_num = 0;
|
|
while current_num < repeat_count do
|
|
insert into t1 values(current_num, RAND(), RAND(), substring(MD5(RAND()), -64));
|
|
set current_num = current_num + 1;
|
|
end while;
|
|
end//
|
|
commit;
|
|
set autocommit=0;
|
|
call innodb_insert_proc(20000);
|
|
commit;
|
|
set autocommit=1;
|
|
delete from t1 where a between 1000 and 1300;
|
|
update t1 set b=b+1 where a between 2000 and 2600;
|
|
insert into t1 select a+30000,b,c,d from t1 where a between 3000 and 4000;
|
|
delete from t1 where a between 6000 and 7000;
|
|
drop procedure innodb_insert_proc;
|
|
drop table t1;
|