… using MyISAM for everything!. MyISAM may be good for raw performance, but there are limitations which MyISAM imposes that are difficult to work with. MyISAM… innodb_file_format=barracuda innodb_log_buffer_size=32M innodb_buffer_pool_instances=16 metadata_locks_hash_instances=32 table_open_cache…
Post: How innodb_open_files affects performance
November 18, 2009 By 4 Comments
… smaller for MyISAM. I found no significant difference whatever limit of open files was, which is not surprising as logical operation of opening file is rather… with innodb_open_files=16384 I got about same crash recovery speed though with no warnings. So it looks like innodb_open_files_limit=300…
Post: Ultimate MySQL variable and status reference list
January 8, 2011 By 4 Comments
…Open_filesblogpercona.commanual open_files_limitblogpercona.commanual Open_streamsblogpercona.commanual Open_table_definitionsblogpercona.commanual Open_tablesblogpercona.commanual Opened_filesblogpercona.commanual Opened_table_definitionsblogpercona.commanual Opened…
Comment: table_cache negative scalability
April 14, 2010 By 23 Comments
…, 31014 + 27426 = 58440 os file descriptors. So – 1) Do I get errno: 24 becuase I have the open_files_limit set to 40000? 2) Could you explain the difference between MyISAM and InnoDB and the difference in how the OS handles opened files… thread_cache_size = 100 max_connections = 400 table_cache = 20000 open_files_limit = 40000 max_binlog_size = 500M max_allowed_packet = 20M tmp…
Comment: New Forum Categories: Help Wanted, For Hire
March 5, 2013 By 1 Comment
… max_heap_table_size=128M event_scheduler=ON query_cache_limit = 10M open_files_limit = 8088 back_log=128 max_allowed_packet = 50M # performance…_query_time=300 key_buffer_size = 500M concurrent_insert=2 myisam_sort_buffer_size = 64M # innodb innodb_additional_mem_pool_size… max_heap_table_size=128M event_scheduler=ON query_cache_limit = 10M open_files_limit = 8088 back_log=128 max_allowed_packet = 50M # performance…
Comment: table_cache negative scalability
April 14, 2010 By 23 Comments
…, 31014 + 27426 = 58440 os file descriptors. So – 1) Do I get errno: 24 becuase I have the open_files_limit set to 40000? 2) Could you explain the difference between MyISAM and InnoDB table cache? 3) Would converting the MyISAM tables… thread_cache_size = 100 max_connections = 400 table_cache = 20000 open_files_limit = 40000 max_binlog_size = 500M max_allowed_packet = 20M tmp…
Post: MySQL 5.5 and MySQL 5.6 default variable values differences
February 21, 2013 By 8 Comments
… good change as trying to create Innodb table but getting MyISAM because Innodb was disabled for some reason was very error…_open_files was increased to 2000 from 300. Good change considering open_files_limit was also raised. Unlikely to cause significant gains unless opening and closing files…
Comment: How innodb_open_files affects performance
April 14, 2010 By 4 Comments
…/ asking about open_file_limit. One thing I see that is not talked about is how the os ulimit of “open files“, mysql setting “open_file_limit” affects the OS/MySQL and I believe is non-biased to MyISAM and InnoDB table types. If the max open_file_limit…
Comment: MySQL Server Memory Usage
September 1, 2006 By 21 Comments
…_used_connections’, ’651′ ‘Not_flushed_delayed_rows’, ’0′ ‘Open_files‘, ’95′ ‘Open_streams’, ’0′ ‘Open_tables’, ’512′ ‘Opened_tables’, ’183240′ ‘Qcache_free_blocks’, ’136′ ‘Qcache…_connections=650 open_files_limit=6144 max_connect_errors=10000 interactive_timeout=3600 wait_timeout=3600 key_buffer_size=32M # Only for MyISAM which…
Comment: Database problems in MySQL/PHP Applications
November 6, 2006 By 13 Comments
… = 2000M max_allowed_packet = 32M # table_cache=20M # open-files-limit=20000 table_cache = 3072 open_files_limit = 9216 tmp_table_size=1000M sort_buffer_size = 100M read_buffer_size = 100M read_rnd_buffer_size = 100M myisam_sort…
