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Post: How much space does empty Innodb table take ?
December 16, 2008 By 7 Comments
How much space would empty MyISAM table take ? Probably 8K for .frm file, 1KB for .MYI file … own. As we populate table we will see Free space will remain at zero as Data_length is small: mysql> show table status like “test_innodb… at certain point you will see Innodb Free space to become non zero: mysql> show table status like “test_innodb” \G *************************** 1. row *************************** Name…
Post: Efficient Boolean value storage for Innodb Tables
April 23, 2008 By 6 Comments
…tables: mysql> show table status like “%bool%” \G *************************** 1. row *************************** Name: bbool Engine: MyISAM Version: 10 Row_format: Fixed Rows: 2097152 Avg_row_length: 7 Data…
Post: How much overhead is caused by on disk temporary tables
August 16, 2007 By 26 Comments
… in practice. mysql> show global status like “key%”; +————————+———+ | Variable_name | Value…—–io—- –system– —–cpu—— r b swpd free buff cache si…MyISAM tables may not scale proportionally with table size, even when all data fits in memory MEMORY temporary tables…
Comment: MySQL Server Memory Usage
September 1, 2006 By 21 Comments
…show_innodb_status‘, ’167091′ ‘Com_show_keys’, ’136′ ‘Com_show_logs’, ’0′ ‘Com_show_master_status‘, ’105′ ‘Com_show_ndb_status‘, ’0′ ‘Com_show_new_master’, ’0′ ‘Com_show_open_tables…MyISAM which isnt used. sort_buffer_size=2M query_cache_size=10M # Might be increased thread_cache_size=40 table…
Post: Living with backups
November 6, 2008 By 28 Comments
…free of any cost. On the contrary, it’s more like doing very heavy queries against each table…MyISAM tables which have dedicated buffers only to store indexes, while the actual data is always read from disk. The active portions of tables…= $dbh->prepare(‘SHOW GLOBAL STATUS LIKE “Threads_connected…
Comment: COUNT(*) for Innodb Tables
July 19, 2012 By 32 Comments
… approximate number of rows as fast in Innodb as in myisam tables using “SHOW TABLE STATUS” command it will varry from real number to small… Rows: 11861 Avg_row_length: 222 Data_length: 2637824 Max_data_length: 0 Index_length: 5718016 Data_free: 5219811328 Auto_increment: 56416 Create_time…
Comment: InnoDB vs MyISAM vs Falcon benchmarks - part 1
January 8, 2007 By 117 Comments
…SHOW TABLE STATUS: show table status\G *************************** 1. row *************************** Name: normal Engine: Falcon Version: 10 Row_format: Dynamic Rows: 1000 Avg_row_length: 0 Data_length: 10000 Max_data_length: 0 Index_length: 0 Data_free…
Post: Is there room for more MySQL IO Optimization?
January 3, 2013 By 11 Comments
… files, binary log, FRM files, MySQL MyISAM system tables etc. Starting MySQL 5.5 MySQL… the table as it would be in the production over time: mysql> show table status like “post_channel…row_length: 75 Data_length: 20975714304 Max_data_length: 0 Index_length: 9047113728 Data_free: 6291456 Auto_…
Post: Using LVM for MySQL Backup and Replication Setup
August 21, 2006 By 53 Comments
…disk based storage engines It works with MyISAM and Innodb and BDB, It also …data back and standard MySQL crash recovery, and it can be reduced even further. More on this later. Free…tables, but before that you should probably record binary log position which is done by running SHOW MASTER STATUS…
