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336a17576c
Backporting the WL#5716, "Information schema table for InnoDB buffer pool information". Backporting revisions 2876.244.113, 2876.244.102 from mysql-trunk. rb://1177 approved by Jimmy Yang.
77 lines
2.6 KiB
Plaintext
77 lines
2.6 KiB
Plaintext
# Exercise the code path for INFORMATION_SCHEMA.INNODB_BUFFER_POOL_STATS
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# and INFORMATION_SCHEMA.INNODB_BUFFER_PAGE
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-- source include/have_innodb.inc
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-- disable_result_log
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SELECT * FROM INFORMATION_SCHEMA.INNODB_BUFFER_POOL_STATS;
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# How many buffer pools we have
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SELECT count(*) FROM INFORMATION_SCHEMA.INNODB_BUFFER_POOL_STATS;
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SELECT * FROM INFORMATION_SCHEMA.INNODB_BUFFER_PAGE;
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# This gives the over all buffer pool size
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SELECT COUNT(*) FROM INFORMATION_SCHEMA.INNODB_BUFFER_PAGE;
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-- enable_result_log
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# Create a table and check its page info behave correctly in the pool
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CREATE TABLE infoschema_buffer_test (col1 INT) ENGINE = INNODB;
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INSERT INTO infoschema_buffer_test VALUES(9);
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# We should be able to see this table in the buffer pool if we check
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# right away
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SELECT TABLE_NAME, INDEX_NAME, NUMBER_RECORDS, DATA_SIZE, PAGE_STATE, PAGE_TYPE
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FROM INFORMATION_SCHEMA.INNODB_BUFFER_PAGE
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WHERE TABLE_NAME like "%infoschema_buffer_test"
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and PAGE_STATE="file_page" and PAGE_TYPE="index";
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# The NUMBER_RECORDS and DATA_SIZE should check with each insertion
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INSERT INTO infoschema_buffer_test VALUES(19);
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SELECT TABLE_NAME, INDEX_NAME, NUMBER_RECORDS, DATA_SIZE, PAGE_STATE, PAGE_TYPE
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FROM INFORMATION_SCHEMA.INNODB_BUFFER_PAGE
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WHERE TABLE_NAME like "%infoschema_buffer_test"
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and PAGE_STATE="file_page" and PAGE_TYPE="index";
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CREATE INDEX idx ON infoschema_buffer_test(col1);
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SELECT TABLE_NAME, INDEX_NAME, NUMBER_RECORDS, DATA_SIZE, PAGE_STATE, PAGE_TYPE
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FROM INFORMATION_SCHEMA.INNODB_BUFFER_PAGE
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WHERE TABLE_NAME like "%infoschema_buffer_test"
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and PAGE_STATE="file_page" and INDEX_NAME = "idx" and PAGE_TYPE="index";
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# Check the buffer after dropping the table
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DROP TABLE infoschema_buffer_test;
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SELECT TABLE_NAME, INDEX_NAME, NUMBER_RECORDS, DATA_SIZE, PAGE_STATE, PAGE_TYPE
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FROM INFORMATION_SCHEMA.INNODB_BUFFER_PAGE
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WHERE TABLE_NAME like "%infoschema_buffer_test";
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# Do one more test
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#--replace_regex /'*[0-9]*'/'NUM'/
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CREATE TABLE infoschema_parent (id INT NOT NULL, PRIMARY KEY (id))
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ENGINE=INNODB;
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CREATE TABLE infoschema_child (id INT, parent_id INT, INDEX par_ind (parent_id),
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FOREIGN KEY (parent_id)
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REFERENCES infoschema_parent(id)
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ON DELETE CASCADE)
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ENGINE=INNODB;
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SELECT count(*)
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FROM INFORMATION_SCHEMA.INNODB_BUFFER_PAGE
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WHERE TABLE_NAME like "%infoschema_child" and PAGE_STATE="file_page"
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and PAGE_TYPE="index";
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DROP TABLE infoschema_child;
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DROP TABLE infoschema_parent;
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show create table information_schema.innodb_buffer_page;
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show create table information_schema.innodb_buffer_page_lru;
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show create table information_schema.innodb_buffer_pool_stats;
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