别人的MARK下

[client]
port = 3306
default-character-set=utf8
socket = /usr/local/mysql/tmp/mysql.sock

[mysqld]
log_bin_trust_function_creators = 1
character-set-server = utf8
port = 3306
socket = /usr/local/mysql/tmp/mysql.sock
basedir = /usr/local/mysql
datadir = /data/dbdata
back_log = 100
max_connections = 500
max_connect_errors = 100000
table_cache = 624
external-locking = FALSE
max_allowed_packet = 16M
sort_buffer_size = 8M
join_buffer_size = 4M
thread_cache_size = 128
query_cache_size = 128M
query_cache_limit = 2M
query_cache_min_res_unit = 2k
default-storage-engine = INNODB
thread_stack = 192K
transaction_isolation = REPEATABLE-READ
tmp_table_size = 128M
max_heap_table_size = 128M
slow_query_log
long_query_time = 0.5
log-bin
binlog_format = MIXED
binlog_cache_size = 4M
max_binlog_cache_size = 8M
max_binlog_size = 512M
key_buffer_size = 256M
read_buffer_size = 8M
read_rnd_buffer_size = 8M
bulk_insert_buffer_size = 64M
myisam_sort_buffer_size = 128M
myisam_max_sort_file_size = 10G
myisam_repair_threads = 1
myisam_recover

interactive_timeout = 28800
wait_timeout = 28800

skip-name-resolve

server-id = 1

innodb_buffer_pool_size = 20G
innodb_additional_mem_pool_size = 20M
innodb_data_file_path = ibdata1:256M:autoextend
innodb_file_io_threads = 8
innodb_thread_concurrency = 16
innodb_flush_log_at_trx_commit = 2
innodb_log_buffer_size = 16M
innodb_log_file_size = 512M
innodb_log_files_in_group = 3
innodb_flush_method=O_DIRECT
#5.5的添加了innodb_io_capacity参数
#innodb_io_capacity=500
innodb_support_xa=0
innodb_max_dirty_pages_pct = 75
innodb_lock_wait_timeout = 120
innodb_file_per_table = 1

[myisamchk]
key_buffer_size = 512M
sort_buffer_size = 512M
read_buffer = 8M
write_buffer = 8M

[mysqldump]
quick
max_allowed_packet = 32M

[mysqld_safe]
open-files-limit = 10240