SELECT * FROM INFORMATION_SCHEMA.INNODB_BUFFER_POOL_STATS; POOL_ID POOL_SIZE FREE_BUFFERS DATABASE_PAGES OLD_DATABASE_PAGES MODIFIED_DATABASE_PAGES PENDING_DECOMPRESS PENDING_READS PENDING_FLUSH_LRU PENDING_FLUSH_LIST PAGES_MADE_YOUNG PAGES_NOT_MADE_YOUNG PAGES_MADE_YOUNG_RATE PAGES_MADE_NOT_YOUNG_RATE NUMBER_PAGES_READ NUMBER_PAGES_CREATED NUMBER_PAGES_WRITTEN PAGES_READ_RATE PAGES_CREATE_RATE PAGES_WRITTEN_RATE NUMBER_PAGES_GET HIT_RATE YOUNG_MAKE_PER_THOUSAND_GETS NOT_YOUNG_MAKE_PER_THOUSAND_GETS NUMBER_PAGES_READ_AHEAD NUMBER_READ_AHEAD_EVICTED READ_AHEAD_RATE READ_AHEAD_EVICTED_RATE LRU_IO_TOTAL LRU_IO_CURRENT UNCOMPRESS_TOTAL UNCOMPRESS_CURRENT # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # CREATE TABLE infoschema_buffer_test (col1 INT) ENGINE = INNODB; INSERT INTO infoschema_buffer_test VALUES(9); SELECT * FROM INFORMATION_SCHEMA.INNODB_BUFFER_PAGE WHERE TABLE_NAME LIKE '%infoschema_buffer_test%' AND PAGE_TYPE='index'; POOL_ID BLOCK_ID SPACE PAGE_NUMBER PAGE_TYPE FLUSH_TYPE FIX_COUNT IS_HASHED NEWEST_MODIFICATION OLDEST_MODIFICATION ACCESS_TIME TABLE_NAME INDEX_NAME NUMBER_RECORDS DATA_SIZE COMPRESSED_SIZE PAGE_STATE IO_FIX IS_OLD FREE_PAGE_CLOCK 0 # # 3 INDEX 0 FIX AHI LSN LSN TIME `test`.`infoschema_buffer_test` GEN_CLUST_INDEX 1 29 0 FILE_PAGE IO_FIX OLD # INSERT INTO infoschema_buffer_test VALUES(19); CREATE INDEX idx ON infoschema_buffer_test(col1); SELECT * FROM INFORMATION_SCHEMA.INNODB_BUFFER_PAGE WHERE TABLE_NAME LIKE '%infoschema_buffer_test%' AND PAGE_TYPE='index'; POOL_ID BLOCK_ID SPACE PAGE_NUMBER PAGE_TYPE FLUSH_TYPE FIX_COUNT IS_HASHED NEWEST_MODIFICATION OLDEST_MODIFICATION ACCESS_TIME TABLE_NAME INDEX_NAME NUMBER_RECORDS DATA_SIZE COMPRESSED_SIZE PAGE_STATE IO_FIX IS_OLD FREE_PAGE_CLOCK 0 # # 3 INDEX 0 FIX AHI LSN LSN TIME `test`.`infoschema_buffer_test` GEN_CLUST_INDEX 2 58 0 FILE_PAGE IO_FIX OLD # 0 # # 4 INDEX 0 FIX AHI LSN LSN TIME `test`.`infoschema_buffer_test` idx 2 32 0 FILE_PAGE IO_FIX OLD # 0 # # 5 INDEX 0 FIX AHI LSN LSN TIME `test`.`infoschema_buffer_test` idx 2 32 0 FILE_PAGE IO_FIX OLD # DROP TABLE infoschema_buffer_test; SELECT * FROM INFORMATION_SCHEMA.INNODB_BUFFER_PAGE WHERE TABLE_NAME LIKE '%infoschema_buffer_test%'; POOL_ID BLOCK_ID SPACE PAGE_NUMBER PAGE_TYPE FLUSH_TYPE FIX_COUNT IS_HASHED NEWEST_MODIFICATION OLDEST_MODIFICATION ACCESS_TIME TABLE_NAME INDEX_NAME NUMBER_RECORDS DATA_SIZE COMPRESSED_SIZE PAGE_STATE IO_FIX IS_OLD FREE_PAGE_CLOCK CREATE TABLE infoschema_parent (id INT NOT NULL, PRIMARY KEY (id)) ENGINE=INNODB; CREATE TABLE infoschema_child (id INT, parent_id INT, INDEX par_ind (parent_id), FOREIGN KEY (parent_id) REFERENCES infoschema_parent(id) ON DELETE CASCADE) ENGINE=INNODB; SELECT * FROM INFORMATION_SCHEMA.INNODB_BUFFER_PAGE WHERE TABLE_NAME LIKE '%infoschema_child%'; POOL_ID BLOCK_ID SPACE PAGE_NUMBER PAGE_TYPE FLUSH_TYPE FIX_COUNT IS_HASHED NEWEST_MODIFICATION OLDEST_MODIFICATION ACCESS_TIME TABLE_NAME INDEX_NAME NUMBER_RECORDS DATA_SIZE COMPRESSED_SIZE PAGE_STATE IO_FIX IS_OLD FREE_PAGE_CLOCK 0 # # 3 INDEX 0 FIX AHI LSN LSN TIME `test`.`infoschema_child` GEN_CLUST_INDEX 0 0 0 FILE_PAGE IO_FIX OLD # 0 # # 4 INDEX 0 FIX AHI LSN LSN TIME `test`.`infoschema_child` par_ind 0 0 0 FILE_PAGE IO_FIX OLD # DROP TABLE infoschema_child; DROP TABLE infoschema_parent;