… for raw performance, but there are limitations which MyISAM imposes that are difficult to… sort via ALTER TABLE ENABLE KEYS. my.cnf [mysqld] datadir=/mnt/mysql56/data basedir…file_format=barracuda innodb_log_buffer_size=32M innodb_buffer_pool_instances=16 metadata_locks_hash_instances=32 table_open…
Post: How innodb_open_files affects performance
November 18, 2009 By 4 Comments
… the same, taking 1sec (on the second time) . Whenever innodb_open_files_limit was 64 (virtually all misses ) or 16384 (all hits) performance…_max_files_open in InnoDB: my.cnf. InnoDB: fil_sys open file LRU len 0 091118 18:47:44 InnoDB: Warning: too many (68) files stay open while… 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: How Percona does a MySQL Performance Audit
November 24, 2008 By 17 Comments
…here — we focus on far more than my.cnf files. In fact my.cnf files are usually one of the smallest …query log output. The stock MySQL server’s limitation of one-second granularity makes it hide …. It’s like knowing openings in chess — the great chess players study openings exhaustively, but they …
Comment: Database problems in MySQL/PHP Applications
November 6, 2006 By 13 Comments
… # MySQL. # # You can copy this file to # /etc/my.cnf to set global options, # mysql-data-dir/my.cnf to set server-specific options (in… = 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…
Comment: New Forum Categories: Help Wanted, For Hire
March 5, 2013 By 1 Comment
… performance. Hardware: 32 GB – RAM 12 Core Processor 1TB – Disk My.cnf ========== freehold: [client] port=3323 socket=/tmp/mysqld_mdmp.sock character… 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… max open tables issue? Thanks for your help! Server info: Server version: 5.0.79-enterprise-log MySQL Enterprise Server (Commercial) my.cnf… thread_cache_size = 100 max_connections = 400 table_cache = 20000 open_files_limit = 40000 max_binlog_size = 500M max_allowed_packet = 20M tmp…
Comment: Solving RPM installation conflicts in CentOS 5 and CentOS 6
February 21, 2013 By 6 Comments
…file /etc/my.cnf,i add wsrep_cluster_address=gcomm:// to fill it ,the mysql server will not running [root@mysql1 ~]# vi /etc/my.cnf….25; gcs.recv_q_hard_limit = 2147483647; gcs.recv_q_soft_limit = 0.25; gcs.sync_donor…(gcs_core_open+0×88)[0xefa248] /usr/lib/libgalera_smm.so(gcs_open+0x2c8)[0xf01028] /…
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… max open tables issue? Thanks for your help! Server info: Server version: 5.0.79-enterprise-log MySQL Enterprise Server (Commercial) my.cnf… thread_cache_size = 100 max_connections = 400 table_cache = 20000 open_files_limit = 40000 max_binlog_size = 500M max_allowed_packet = 20M tmp…
Post: Review of MySQL 5.6 Defaults Changes
October 8, 2012 By 10 Comments
… would recommend adding support for value 0 which would mean limit disabled. Very few users actually need DOS prevention this variable… as MySQL is typically protected by Firewall to begin with. open_files_limit = 5000 strangely enough this is where the smart selection of… also promises updated sample my.cnf and getting rid of old my-huge.cnf which are great. Perhaps my jokes about my-huge my-large etc referring…
Comment: What to tune in MySQL Server after installation
March 10, 2007 By 118 Comments
MySQL – Standardkonfiguration (InnoDB)… Server Open File Limit > 10000 coredumps müssen funktionieren /etc/my.cnf Gute Referenz:…
