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MDEV-11454: Add test case innodb_buffer_pool_dump_pct
Signed-off-by: Daniel Black <daniel.black@au.ibm.com>
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‎mysql-test/suite/sys_vars/r/innodb_buffer_pool_dump_pct_function.result

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SET GLOBAL innodb_buffer_pool_dump_pct=25, global innodb_buffer_pool_dump_at_shutdown=1;;
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# populate with data
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CREATE TABLE t1 (
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c01 blob, c02 blob, c03 blob, c04 blob, c05 blob,
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c06 blob, c07 blob, c08 blob, c09 blob, c10 blob,
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c11 blob, c12 blob, c13 blob, c14 blob, c15 blob,
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c16 blob, c17 blob, c18 blob, c19 blob, c20 blob,
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c21 blob, c22 blob, c23 blob, c24 blob, c25 blob,
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c26 blob, c27 blob, c28 blob, c29 blob, c30 blob,
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c31 blob, c32 blob, c33 blob, c34 blob, c35 blob,
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c36 blob, c37 blob, c38 blob, c39 blob, c40 blob,
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c41 blob, c42 blob, c43 blob, c44 blob, c45 blob,
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c46 blob, c47 blob, c48 blob, c49 blob, c50 blob,
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c51 blob, c52 blob, c53 blob, c54 blob, c55 blob,
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c56 blob, c57 blob, c58 blob, c59 blob, c60 blob,
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c61 blob, c62 blob, c63 blob, c64 blob
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) ROW_FORMAT=dynamic;
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SET @a = repeat('a', 16 * 1024);
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INSERT INTO t1 VALUES (@a,@a,@a,@a,@a,
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@a,@a,@a,@a,@a,
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@a,@a,@a,@a,@a,
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@a,@a,@a,@a,@a,
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@a,@a,@a,@a,@a,
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@a,@a,@a,@a,@a,
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@a,@a,@a,@a,@a,
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@a,@a,@a,@a,@a,
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@a,@a,@a,@a,@a,
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@a,@a,@a,@a,@a,
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@a,@a,@a,@a,@a,
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@a,@a,@a,@a,@a,
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@a,@a,@a,@a
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);
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insert into t1 select * from t1;
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# Restart server
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SET GLOBAL innodb_buffer_pool_load_now=1;
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# Case 1: Limit from innodb_buffer_pool_dump_pct
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SELECT 256 as 'Previous pool pages',
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ROUND(25 / 100 * @@innodb_buffer_pool_size / @@innodb_page_size) as 'Limit',
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128 as 'Pages saved';
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Previous pool pages Limit Pages saved
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256 128 128
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# Case 2: blog_pages is the minimum.
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# load buffer pool with entire table.
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select * from t1;
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SET GLOBAL innodb_buffer_pool_dump_pct=75, global innodb_buffer_pool_dump_at_shutdown=1;
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# Restart server
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SET GLOBAL innodb_buffer_pool_load_now=1;
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# now loaded
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SELECT 256 as 'Previous pool pages',
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ROUND(75 / 100 * @@innodb_buffer_pool_size / @@innodb_page_size) as 'Limit',
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256 as 'Pages saved';
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Previous pool pages Limit Pages saved
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256 384 256
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DROP TABLE t1;

‎mysql-test/suite/sys_vars/t/innodb_buffer_pool_dump_pct_function.opt

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--loose-default-storage-engine=innodb
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--loose-innodb_buffer_pool_load_at_startup=0
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--loose-innodb_buffer_pool_dump_at_shutdown=0
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--loose-innodb-buffer-pool-size=8M
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--loose-innodb-page-size=16k

‎mysql-test/suite/sys_vars/t/innodb_buffer_pool_dump_pct_function.test

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#
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# Functional test for innodb_buffer_pool_dump_pct
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#
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# From MDEV-11454 the amount dumped is the minimum of:
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# * innodb_buffer_pool_dump_pct * Innodb_buffer_pool_pages_total * innodb_page_size
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# * innodb_buffer_pool_pages_data * innodb_page_size
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-- source include/have_innodb.inc
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--let $PCT=25
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--eval SET GLOBAL innodb_buffer_pool_dump_pct=$PCT, global innodb_buffer_pool_dump_at_shutdown=1;
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--echo # populate with data
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CREATE TABLE t1 (
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c01 blob, c02 blob, c03 blob, c04 blob, c05 blob,
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c06 blob, c07 blob, c08 blob, c09 blob, c10 blob,
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c11 blob, c12 blob, c13 blob, c14 blob, c15 blob,
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c16 blob, c17 blob, c18 blob, c19 blob, c20 blob,
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c21 blob, c22 blob, c23 blob, c24 blob, c25 blob,
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c26 blob, c27 blob, c28 blob, c29 blob, c30 blob,
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c31 blob, c32 blob, c33 blob, c34 blob, c35 blob,
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c36 blob, c37 blob, c38 blob, c39 blob, c40 blob,
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c41 blob, c42 blob, c43 blob, c44 blob, c45 blob,
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c46 blob, c47 blob, c48 blob, c49 blob, c50 blob,
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c51 blob, c52 blob, c53 blob, c54 blob, c55 blob,
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c56 blob, c57 blob, c58 blob, c59 blob, c60 blob,
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c61 blob, c62 blob, c63 blob, c64 blob
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) ROW_FORMAT=dynamic;
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SET @a = repeat('a', 16 * 1024);
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INSERT INTO t1 VALUES (@a,@a,@a,@a,@a,
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@a,@a,@a,@a,@a,
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@a,@a,@a,@a,@a,
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@a,@a,@a,@a,@a,
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@a,@a,@a,@a,@a,
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@a,@a,@a,@a,@a,
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@a,@a,@a,@a,@a,
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@a,@a,@a,@a,@a,
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@a,@a,@a,@a,@a,
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@a,@a,@a,@a,@a,
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@a,@a,@a,@a,@a,
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@a,@a,@a,@a,@a,
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@a,@a,@a,@a
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);
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insert into t1 select * from t1;
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--let $blob_pages=`select count(*) from information_schema.INNODB_BUFFER_PAGE WHERE PAGE_TYPE='BLOB' group by PAGE_TYPE`
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# Dump on shutdown has been set - shutdown now
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--echo # Restart server
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--let $shutdown_timeout= 10
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--let $allow_rpl_inited= 1
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--source include/restart_mysqld.inc
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SET GLOBAL innodb_buffer_pool_load_now=1;
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# Wait fit for the load to complete
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let $wait_condition =
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SELECT SUBSTR(variable_value, 1, 33) = 'Buffer pool(s) load completed at '
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FROM information_schema.global_status
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WHERE LOWER(variable_name) = 'innodb_buffer_pool_load_status';
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-- source include/wait_condition.inc
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--let $loaded_blob_pages=`select count(*) from information_schema.INNODB_BUFFER_PAGE WHERE PAGE_TYPE='BLOB' group by PAGE_TYPE`
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--echo # Case 1: Limit from innodb_buffer_pool_dump_pct
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eval SELECT $blob_pages as 'Previous pool pages',
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ROUND($PCT / 100 * @@innodb_buffer_pool_size / @@innodb_page_size) as 'Limit',
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$loaded_blob_pages as 'Pages saved';
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--echo # Case 2: blog_pages is the minimum.
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--echo # load buffer pool with entire table.
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--disable_result_log
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select * from t1;
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--enable_result_log
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--let $PCT=75
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eval SET GLOBAL innodb_buffer_pool_dump_pct=$PCT, global innodb_buffer_pool_dump_at_shutdown=1;
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--let $blob_pages=`select count(*) from information_schema.INNODB_BUFFER_PAGE WHERE PAGE_TYPE='BLOB' group by PAGE_TYPE`
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--echo # Restart server
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--source include/restart_mysqld.inc
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SET GLOBAL innodb_buffer_pool_load_now=1;
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# Wait for load
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-- source include/wait_condition.inc
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--echo # now loaded
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--let $loaded_blob_pages=`select count(*) from information_schema.INNODB_BUFFER_PAGE WHERE PAGE_TYPE='BLOB' group by PAGE_TYPE`
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eval SELECT $blob_pages as 'Previous pool pages',
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ROUND($PCT / 100 * @@innodb_buffer_pool_size / @@innodb_page_size) as 'Limit',
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$loaded_blob_pages as 'Pages saved';
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# Clean up
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#
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#
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--remove_file $MYSQLTEST_VARDIR/mysqld.1/data/ib_buffer_pool
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DROP TABLE t1;

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