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MDEV-24661: Remove the test innodb.innodb_wl6326_big
The purpose of the test was to ensure that the SX (update) mode of index tree and buffer page latches are being used. The test has become unstable, possibly due to changes related to buf_pool.mutex and buf_pool.page_hash, or to the use of MDL in the purge of transaction history. In 10.6, the test depends on instrumentation that was refactored or removed in MDEV-24142. The use of different latching modes can better be indirectly observed through high-concurrency benchmarks. For MDEV-14637, a performance test was conducted where the finer-grained latching and BTR_CUR_FINE_HISTORY_LENGTH were removed. It caused a 20% performance regression for UPDATE and somewhat smaller for INSERT. Any new problem with latching granularity should be easily caught by performance testing, or by stress tests with Random Query Generator.
This commit is contained in:
Marko Mäkelä
@@ -1,449 +0,0 @@
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CREATE SCHEMA my_schema;
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USE my_schema;
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CREATE FUNCTION f_thread_id (i INT) RETURNS CHAR(4) DETERMINISTIC
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RETURN CONCAT(LPAD(CAST(i AS CHAR),3,'_'),'_') ;
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SELECT CONCAT('->', f_thread_id( 1), '<-');
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CONCAT('->', f_thread_id( 1), '<-')
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->__1_<-
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SELECT CONCAT('->', f_thread_id(12), '<-');
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CONCAT('->', f_thread_id(12), '<-')
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->_12_<-
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SET @extra_int = 1;
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SET @extra_string = f_thread_id(@extra_int);
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SELECT @extra_int , @extra_string;
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@extra_int @extra_string
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1 __1_
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CREATE FUNCTION f_col_int1 (i INT) RETURNS INT(20) DETERMINISTIC
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RETURN i * 1000 + @extra_int ;
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SELECT f_col_int1(my_col) AS my_result
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FROM (SELECT 1 AS my_col UNION SELECT 12 UNION SELECT 123
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UNION SELECT 1234 UNION SELECT 12345) AS tx;
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my_result
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1001
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12001
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123001
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1234001
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12345001
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CREATE FUNCTION f_col_int2 (i INT) RETURNS INT(20) DETERMINISTIC
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RETURN @extra_int * 10000000 + i ;
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SELECT f_col_int2(my_col) AS my_result
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FROM (SELECT 1 AS my_col UNION SELECT 12 UNION SELECT 123
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UNION SELECT 1234 UNION SELECT 12345) AS tx;
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my_result
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10000001
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10000012
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10000123
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10001234
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10012345
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CREATE FUNCTION f_col_int3 (i INT) RETURNS INT(20) DETERMINISTIC
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RETURN @extra_int ;
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SELECT f_col_int3(my_col) AS my_result
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FROM (SELECT 1 AS my_col UNION SELECT 12 UNION SELECT 123
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UNION SELECT 1234 UNION SELECT 12345) AS tx;
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my_result
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1
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1
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1
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1
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1
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CREATE FUNCTION f_col_blob (i INT) RETURNS BLOB DETERMINISTIC
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RETURN RPAD(@extra_string,(@@innodb_page_size / 2 ) + 1,'a');
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SELECT CONCAT('->', SUBSTR(f_col_blob(my_col) FROM 1 FOR 10),
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'<-.....->', SUBSTR(f_col_blob(my_col) FROM -10 FOR 10), '<-') AS my_result
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FROM (SELECT 1 AS my_col UNION SELECT 12 UNION SELECT 123
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UNION SELECT 1234 UNION SELECT 12345) AS tx;
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my_result
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->__1_aaaaaa<-.....->aaaaaaaaaa<-
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->__1_aaaaaa<-.....->aaaaaaaaaa<-
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->__1_aaaaaa<-.....->aaaaaaaaaa<-
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->__1_aaaaaa<-.....->aaaaaaaaaa<-
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->__1_aaaaaa<-.....->aaaaaaaaaa<-
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CREATE FUNCTION f_col_char0 (i INT) RETURNS CHAR(255) DETERMINISTIC
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RETURN LPAD(CAST(i AS CHAR),255,' ');
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SELECT CONCAT('->', f_col_char0(my_col), '<-') AS my_result
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FROM (SELECT 1 AS my_col UNION SELECT 12 UNION SELECT 123
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UNION SELECT 1234 UNION SELECT 12345) AS tx;
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my_result
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-> 1<-
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-> 12<-
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-> 123<-
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-> 1234<-
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-> 12345<-
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CREATE FUNCTION f_col_char1 (i INT) RETURNS CHAR(26) DETERMINISTIC
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RETURN
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CONCAT('B',
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LPAD(SUBSTR(CAST(i AS CHAR),1,(LENGTH(CAST(i AS CHAR)) DIV 2)),10,' '),
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@extra_string,
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RPAD(SUBSTR(CAST(i AS CHAR), -((LENGTH(CAST(i AS CHAR)) + 1) DIV 2)),10,' '),
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'E') ;
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SELECT CONCAT('->', f_col_char1(my_col), '<-') AS my_result
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FROM (SELECT 1 AS my_col UNION SELECT 12 UNION SELECT 123
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UNION SELECT 1234 UNION SELECT 12345) AS tx;
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my_result
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->B __1_1 E<-
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->B 1__1_2 E<-
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->B 1__1_23 E<-
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->B 12__1_34 E<-
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->B 12__1_345 E<-
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CREATE FUNCTION f_col_char2 (i INT) RETURNS CHAR(26) DETERMINISTIC
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RETURN
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CONCAT('B',
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RPAD(SUBSTR(CAST(i AS CHAR),1,(LENGTH(CAST(i AS CHAR)) DIV 2)),10,' '),
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@extra_string,
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LPAD(SUBSTR(CAST(i AS CHAR), -((LENGTH(CAST(i AS CHAR)) + 1) DIV 2)),10,' '),
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'E');
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SELECT CONCAT('->', f_col_char2(my_col), '<-') AS my_result
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FROM (SELECT 1 AS my_col UNION SELECT 12 UNION SELECT 123
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UNION SELECT 1234 UNION SELECT 12345) AS tx;
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my_result
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->B __1_ 1E<-
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->B1 __1_ 2E<-
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->B1 __1_ 23E<-
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->B12 __1_ 34E<-
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->B12 __1_ 345E<-
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CREATE FUNCTION f_col_char3 (i INT) RETURNS CHAR(26) DETERMINISTIC
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RETURN
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CONCAT('B',@extra_string,LPAD(CAST(i AS CHAR),20,' '),'E');
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SELECT CONCAT('->', f_col_char3(my_col), '<-') AS my_result
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FROM (SELECT 1 AS my_col UNION SELECT 12 UNION SELECT 123
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UNION SELECT 1234 UNION SELECT 12345) AS tx;
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my_result
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->B__1_ 1E<-
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->B__1_ 12E<-
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->B__1_ 123E<-
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->B__1_ 1234E<-
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->B__1_ 12345E<-
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CREATE FUNCTION f_col_char4 (i INT) RETURNS CHAR(26) DETERMINISTIC
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RETURN
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CONCAT('B',RPAD(CAST(i AS CHAR),20,' '),@extra_string,'E');
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SELECT CONCAT('->', f_col_char4(my_col), '<-') AS my_result
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FROM (SELECT 1 AS my_col UNION SELECT 12 UNION SELECT 123
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UNION SELECT 1234 UNION SELECT 12345) AS tx;
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my_result
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->B1 __1_E<-
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->B12 __1_E<-
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->B123 __1_E<-
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->B1234 __1_E<-
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->B12345 __1_E<-
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CREATE TABLE my_metrics LIKE information_schema.innodb_metrics;
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ALTER TABLE my_metrics ADD COLUMN phase ENUM('after', 'before'),
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DROP COLUMN SUBSYSTEM, DROP COLUMN TYPE, DROP COLUMN COMMENT,
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ADD PRIMARY KEY (NAME,phase);
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CREATE TABLE t1 (
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col_int0 BIGINT,
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col_int1 BIGINT,
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col_int2 BIGINT,
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col_int3 BIGINT,
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col_blob BLOB,
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col_char0 VARCHAR(255),
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col_char1 VARCHAR(30),
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col_char2 VARCHAR(30),
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col_char3 VARCHAR(30),
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col_char4 VARCHAR(30)
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) ENGINE = InnoDB;
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ALTER TABLE t1 ADD UNIQUE KEY uidx_col_int0 (col_int0),
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ADD UNIQUE KEY uidx1 (col_int1, col_char0),
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ADD UNIQUE KEY uidx2 (col_int2, col_char0, col_int1),
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ADD UNIQUE KEY uidx3 (col_int3, col_int2, col_char0),
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ADD UNIQUE KEY uidx4 (col_char1, col_char0),
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ADD UNIQUE KEY uidx5 (col_char2, col_char0, col_char1),
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ADD UNIQUE KEY uidx6 (col_char3, col_char2, col_char0),
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ADD UNIQUE KEY uidx7 (col_int1, col_int2, col_int3, col_char4,
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col_char1, col_char2, col_char3, col_char0),
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ADD KEY idx8 (col_blob(10), col_char4);
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CREATE PROCEDURE proc_fill_t1 (max_row_count INT, load_unit INT)
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BEGIN
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DECLARE my_count INTEGER DEFAULT 0;
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DECLARE max_load_count INTEGER DEFAULT 0;
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DROP TABLE IF EXISTS t0;
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CREATE TEMPORARY TABLE t0 (col_int0 BIGINT, PRIMARY KEY(col_int0));
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WHILE (my_count < load_unit ) DO
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SET my_count = my_count + 1;
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INSERT INTO t0 SET col_int0 = my_count;
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END WHILE;
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SET max_load_count = (SELECT (max_row_count DIV load_unit) + 1 );
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SELECT COUNT(col_int0) INTO @val FROM t1;
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SET my_count = 0;
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REPEAT
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INSERT INTO t1 (col_int0, col_int1, col_int2, col_int3, col_blob,
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col_char0, col_char1, col_char2,col_char3,col_char4)
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SELECT col_int0 + @val,
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f_col_int1(col_int0 + @val),
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f_col_int2(col_int0 + @val),
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f_col_int3(col_int0 + @val),
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f_col_blob(col_int0 + @val),
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f_col_char0(col_int0 + @val),
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f_col_char1(col_int0 + @val),
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f_col_char2(col_int0 + @val),
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f_col_char3(col_int0 + @val),
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f_col_char4(col_int0 + @val)
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FROM t0;
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COMMIT;
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SELECT MAX(col_int0) INTO @val FROM t1;
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SET my_count = my_count + 1;
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UNTIL( my_count > max_load_count OR @val >= max_row_count )
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END REPEAT;
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DROP TEMPORARY TABLE t0;
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END|
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CREATE PROCEDURE proc_dml (max_duration INT, t1_stripe_half INT)
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BEGIN
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DECLARE aux INTEGER DEFAULT 0;
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DECLARE start_time INT;
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DECLARE CONTINUE HANDLER FOR SQLEXCEPTION, SQLWARNING, NOT FOUND BEGIN END;
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SET @extra_int = CONNECTION_ID();
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SET @extra_string = f_thread_id(@extra_int);
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SELECT ROUND(MAX(col_int0) / 2 ) INTO @t1_half FROM t1;
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# The user lock 'Blocker' should be already set by some other session S1.
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# S1 starts the race by releasing that lock.
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# Wait till the lock is released and the lock can be obtained.
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# In order to prevent endless waiting in case of non foreseen problems
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# limit the timespan to 30 seconds.
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SELECT GET_LOCK('Blocker', 30) INTO @aux;
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# Release the lock immediate so that the other "runner" sessions start too.
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SELECT RELEASE_LOCK('Blocker') INTO @aux;
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SET start_time = UNIX_TIMESTAMP();
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WHILE (UNIX_TIMESTAMP() - start_time < max_duration) DO
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SET @aux = @t1_half - t1_stripe_half + ROUND(RAND() * t1_stripe_half * 2);
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UPDATE t1 SET
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col_int1 = f_col_int1(col_int0),
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col_int2 = f_col_int2(col_int0),
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col_int3 = f_col_int3(col_int0),
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col_blob = f_col_blob(col_int0),
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col_char0 = f_col_char0(col_int0),
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col_char1 = f_col_char1(col_int0),
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col_char2 = f_col_char2(col_int0),
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col_char3 = f_col_char3(col_int0),
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col_char4 = f_col_char4(col_int0)
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WHERE col_int0 = @aux;
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COMMIT;
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END WHILE;
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END|
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SET GLOBAL innodb_monitor_disable = "innodb_rwlock_sx_%";
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SET @pre_reset_ts = NOW();
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SET GLOBAL innodb_monitor_reset = "innodb_rwlock_sx_%";
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SET @pre_enable_ts = NOW();
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SET GLOBAL innodb_monitor_enable = "innodb_rwlock_sx_%";
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SET @pre_collect_ts = NOW();
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DELETE FROM my_metrics;
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INSERT INTO my_metrics
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SELECT NAME, COUNT, MAX_COUNT, MIN_COUNT, AVG_COUNT,
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COUNT_RESET, MAX_COUNT_RESET, MIN_COUNT_RESET, AVG_COUNT_RESET,
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TIME_ENABLED, TIME_DISABLED, TIME_ELAPSED, TIME_RESET,
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ENABLED, 'before'
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FROM information_schema.innodb_metrics
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WHERE NAME LIKE 'innodb_rwlock_sx_%';
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# TC-01 There are exact three entries "innodb_rwlock_sx_%" with the
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# with the name which follow in innodb_metrics.
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# pass
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SELECT COUNT(*) INTO @sx_count FROM my_metrics;
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# TC-02 Counting is now enabled. ALL = @sx_count entries show that.
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# pass
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# TC-03 @pre_reset_ts < TIME_RESET. ALL = @sx_count entries show that.
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# pass
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# TC-04 @pre_enable_ts < TIME_ENABLED. ALL = @sx_count entries show that.
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# pass
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# TC-05 TIME_RESET < TIME_ENABLED AND TIME_ENABLED < @pre_collect_ts
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# AND TIME_ELAPSED > 0. ALL = @sx_count entries show that.
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# pass
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# TC-06 COUNT_RESET = MAX_COUNT_RESET. ALL = @sx_count entries show that.
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# pass
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SET GLOBAL innodb_monitor_reset = "innodb_rwlock_sx_%";
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SHOW ENGINE INNODB STATUS;
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DELETE FROM my_metrics;
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INSERT INTO my_metrics
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SELECT NAME, COUNT, MAX_COUNT, MIN_COUNT, AVG_COUNT,
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COUNT_RESET, MAX_COUNT_RESET, MIN_COUNT_RESET, AVG_COUNT_RESET,
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TIME_ENABLED, TIME_DISABLED, TIME_ELAPSED, TIME_RESET,
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ENABLED, 'before'
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FROM information_schema.innodb_metrics
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WHERE NAME LIKE 'innodb_rwlock_sx_%';
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SET @extra_string = '__0_';
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SET @extra_int = 0;
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# TC-07 One session inserts some significant amount of rows into t1.
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# The system MUST survive that.
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SET @max_row_count = <max_row_count>;
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SET @load_unit = <load_unit>;
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SET @start_time = UNIX_TIMESTAMP();
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SET AUTOCOMMIT = OFF;
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CALL proc_fill_t1 (@max_row_count, @load_unit);
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# pass
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SET AUTOCOMMIT = ON;
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SELECT col_int0 INTO @t1_half FROM t1
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WHERE col_int0 >= (@val DIV 2) ORDER BY col_int0 LIMIT 1;
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SHOW ENGINE INNODB STATUS;
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SELECT col_int0, col_int1, col_int2, col_int3,
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CONCAT('->', SUBSTR(col_blob FROM 1 FOR 10),
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'<-.....->', SUBSTR(col_blob FROM -10 FOR 10), '<-') AS col_blobx,
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CONCAT('->',col_char0,'<-') AS col_char0x,
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CONCAT('->',col_char1,'<-') AS col_char1x,
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CONCAT('->',col_char2,'<-') AS col_char2x,
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CONCAT('->',col_char3,'<-') AS col_char3x,
|
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CONCAT('->',col_char4,'<-') AS col_char4x
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FROM t1 WHERE col_int0 between 98 AND 102;
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col_int0 98
|
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col_int1 98000
|
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col_int2 98
|
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col_int3 0
|
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col_blobx ->__0_aaaaaa<-.....->aaaaaaaaaa<-
|
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col_char0x -> 98<-
|
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col_char1x ->B 9__0_8 E<-
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col_char2x ->B9 __0_ 8E<-
|
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col_char3x ->B__0_ 98E<-
|
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col_char4x ->B98 __0_E<-
|
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col_int0 99
|
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col_int1 99000
|
||||
col_int2 99
|
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col_int3 0
|
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col_blobx ->__0_aaaaaa<-.....->aaaaaaaaaa<-
|
||||
col_char0x -> 99<-
|
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col_char1x ->B 9__0_9 E<-
|
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col_char2x ->B9 __0_ 9E<-
|
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col_char3x ->B__0_ 99E<-
|
||||
col_char4x ->B99 __0_E<-
|
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col_int0 100
|
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col_int1 100000
|
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col_int2 100
|
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col_int3 0
|
||||
col_blobx ->__0_aaaaaa<-.....->aaaaaaaaaa<-
|
||||
col_char0x -> 100<-
|
||||
col_char1x ->B 1__0_00 E<-
|
||||
col_char2x ->B1 __0_ 00E<-
|
||||
col_char3x ->B__0_ 100E<-
|
||||
col_char4x ->B100 __0_E<-
|
||||
col_int0 101
|
||||
col_int1 101000
|
||||
col_int2 101
|
||||
col_int3 0
|
||||
col_blobx ->__0_aaaaaa<-.....->aaaaaaaaaa<-
|
||||
col_char0x -> 101<-
|
||||
col_char1x ->B 1__0_01 E<-
|
||||
col_char2x ->B1 __0_ 01E<-
|
||||
col_char3x ->B__0_ 101E<-
|
||||
col_char4x ->B101 __0_E<-
|
||||
col_int0 102
|
||||
col_int1 102000
|
||||
col_int2 102
|
||||
col_int3 0
|
||||
col_blobx ->__0_aaaaaa<-.....->aaaaaaaaaa<-
|
||||
col_char0x -> 102<-
|
||||
col_char1x ->B 1__0_02 E<-
|
||||
col_char2x ->B1 __0_ 02E<-
|
||||
col_char3x ->B__0_ 102E<-
|
||||
col_char4x ->B102 __0_E<-
|
||||
# TC-11 Several concurrent sessions perform updates in t1 like mad.
|
||||
# The system MUST survive this.
|
||||
# Printing of statements is partially suppressed.
|
||||
SET @start_time = UNIX_TIMESTAMP();
|
||||
SELECT 1 FROM t1 WHERE col_int0 = @t1_half FOR UPDATE;
|
||||
1
|
||||
1
|
||||
SELECT GET_LOCK('Blocker', 1000) ;
|
||||
GET_LOCK('Blocker', 1000)
|
||||
1
|
||||
RELEASE_LOCK('Blocker')
|
||||
1
|
||||
# pass
|
||||
SHOW ENGINE INNODB STATUS;
|
||||
# TC-13 One session performs ALTER TABLE t1 ADD KEY ... on the fat table t1.
|
||||
# The system MUST survive this.
|
||||
SET @start_time = UNIX_TIMESTAMP();
|
||||
ALTER TABLE t1 ADD KEY idx_col_char4_col_char0 (col_char4,col_char0);
|
||||
SHOW ENGINE INNODB STATUS;
|
||||
# pass
|
||||
# TC-15 One session performs a fat update on the fat table t1.
|
||||
# The system MUST survive this.
|
||||
SET @start_time = UNIX_TIMESTAMP();
|
||||
SET @extra_int = 13;
|
||||
SET @extra_string = f_thread_id(@extra_int);
|
||||
UPDATE t1 SET
|
||||
col_int1 = f_col_int1(col_int0), col_int2 = f_col_int2(col_int0),
|
||||
col_int3 = f_col_int3(col_int0), col_blob = f_col_blob(col_int0),
|
||||
col_char0 = f_col_char0(col_int0), col_char1 = f_col_char1(col_int0),
|
||||
col_char2 = f_col_char2(col_int0), col_char3 = f_col_char3(col_int0),
|
||||
col_char4 = f_col_char4(col_int0)
|
||||
WHERE col_int0 BETWEEN @t1_half - 2500 AND @t1_half + 2500;
|
||||
COMMIT;
|
||||
SHOW ENGINE INNODB STATUS;
|
||||
# pass
|
||||
INSERT INTO my_metrics
|
||||
SELECT NAME, COUNT, MAX_COUNT, MIN_COUNT, AVG_COUNT,
|
||||
COUNT_RESET, MAX_COUNT_RESET, MIN_COUNT_RESET, AVG_COUNT_RESET,
|
||||
TIME_ENABLED, TIME_DISABLED, TIME_ELAPSED, TIME_RESET,
|
||||
ENABLED, 'after'
|
||||
FROM information_schema.innodb_metrics
|
||||
WHERE NAME LIKE 'innodb_rwlock_sx_%';
|
||||
# TC-16 The following activities happend after reset in innodb_metrics
|
||||
# - Insert some significant amount of rows into t1.
|
||||
# - Several concurrent users perform excessive updates in t1.
|
||||
# - ALTER TABLE ... ADD KEY <sufficient big enough structure>
|
||||
# - One UPDATE statement modifying a huge slice of t1.
|
||||
# Any of them causes heavy use of SX lock and therefore COUNT_RESET
|
||||
# must have grown for ALL = @sx_count entries.
|
||||
# pass
|
||||
# TC-09 Heavy activity after reset.
|
||||
# COUNT_RESET = MAX_COUNT_RESET for ALL = @sx_count entries
|
||||
# needs to stay valid though he counters will have grown.
|
||||
# pass
|
||||
DELETE FROM my_metrics;
|
||||
INSERT INTO my_metrics
|
||||
SELECT NAME, COUNT, MAX_COUNT, MIN_COUNT, AVG_COUNT,
|
||||
COUNT_RESET, MAX_COUNT_RESET, MIN_COUNT_RESET, AVG_COUNT_RESET,
|
||||
TIME_ENABLED, TIME_DISABLED, TIME_ELAPSED, TIME_RESET,
|
||||
ENABLED, 'before'
|
||||
FROM information_schema.innodb_metrics
|
||||
WHERE NAME LIKE 'innodb_rwlock_sx_%';
|
||||
SET GLOBAL innodb_monitor_reset = "innodb_rwlock_sx_%";
|
||||
INSERT INTO my_metrics
|
||||
SELECT NAME, COUNT, MAX_COUNT, MIN_COUNT, AVG_COUNT,
|
||||
COUNT_RESET, MAX_COUNT_RESET, MIN_COUNT_RESET, AVG_COUNT_RESET,
|
||||
TIME_ENABLED, TIME_DISABLED, TIME_ELAPSED, TIME_RESET,
|
||||
ENABLED, 'after'
|
||||
FROM information_schema.innodb_metrics
|
||||
WHERE NAME LIKE 'innodb_rwlock_sx_%';
|
||||
# TC-08 There was a reset. COUNT_RESET = MAX_COUNT_RESET for ALL
|
||||
# = @sx_count entries.
|
||||
# pass
|
||||
# TC-17 We had heavy activity causing big counters and after that a reset.
|
||||
# Reset causes COUNT > COUNT_RESET AND MAX_COUNT > MAX_COUNT_RESET
|
||||
# for ALL @sx_count entries.
|
||||
# pass
|
||||
# TC-18 We had some reset but this must not decrease COUNT or MAX_COUNT
|
||||
# after.COUNT >= before.COUNT AND
|
||||
# after.MAX_COUNT >= before.MAX_COUNT for ALL @sx_count entries.
|
||||
# pass
|
||||
# TC-19 We had some reset after heavy activity and this must cause
|
||||
# after.COUNT_RESET < before.COUNT_RESET
|
||||
# AND after.MAX_COUNT_RESET < before.MAX_COUNT_RESET AND
|
||||
# for ALL @sx_count entries.
|
||||
# pass
|
||||
connection con10;
|
||||
disconnect con10;
|
||||
connection con9;
|
||||
disconnect con9;
|
||||
connection con8;
|
||||
disconnect con8;
|
||||
connection con7;
|
||||
disconnect con7;
|
||||
connection con6;
|
||||
disconnect con6;
|
||||
connection con5;
|
||||
disconnect con5;
|
||||
connection con4;
|
||||
disconnect con4;
|
||||
connection con3;
|
||||
disconnect con3;
|
||||
connection con2;
|
||||
disconnect con2;
|
||||
connection con1;
|
||||
disconnect con1;
|
||||
connection default;
|
||||
USE test;
|
||||
DROP SCHEMA my_schema;
|
||||
SET GLOBAL innodb_monitor_disable = all;
|
||||
SET GLOBAL innodb_monitor_reset_all = all;
|
||||
SET GLOBAL innodb_monitor_enable = default;
|
||||
SET GLOBAL innodb_monitor_disable = default;
|
||||
SET GLOBAL innodb_monitor_reset = default;
|
||||
SET GLOBAL innodb_monitor_reset_all = default;
|
||||
SET GLOBAL innodb_monitor_disable = "innodb_rwlock_sx_%";
|
||||
SET GLOBAL innodb_monitor_reset = "innodb_rwlock_sx_%";
|
||||
Reference in New Issue
Block a user