MySQL Tuning Parameters

MySQL Tuning Parameters

These section provides some typical MySQL configuration values that are appropriate for a production system. These values assume:

• 100Mb Primary Ethernet Card
• 32 GB Memory
• 2 Processors
• 2 Cores per Processor
• Switched Ethernet Port
• 64-bit Red Hat Enterprise Linux ES 4

my.cnf / my.ini Options

interactive-timeout = 7200
wait-timeout = 7200
back_log = 200
max_connections = 350
max_connect_errors = 10
table_cache = 8192
max_allowed_packet = 48M
binlog_cache_size = 8M
max_heap_table_size = 120M
sort_buffer_size = 2M
join_buffer_size = 2M
thread_cache = 200
thread_concurrency = 24 
query_cache_size = 500M 
query_cache_limit = 1M 
ft_min_word_len = 4 
thread_stack = 256K 
tmp_table_size = 120M 

InnoDB-Specific Options

innodb_additional_mem_pool_size = 48M
innodb_buffer_pool_size = 23G
innodb_data_file_path = ibdata1:10M:autoextend
innodb_file_io_threads = 4
innodb_thread_concurrency = 24
innodb_flush_log_at_trx_commit = 1
innodb_log_buffer_size = 8M
odb_log_file_size = 256M
innodb_log_files_in_group = 3
innodb_max_dirty_pages_pct = 90
#innodb_flush_method=O_DSYNC
innodb_lock_wait_timeout = 300