数据库配置优化

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存储引擎主要是：innodb，计划提供2G内存用于Mysql运行

配置文件

skip-external-locking
key_buffer_size = 16M
max_allowed_packet = 1M
table_open_cache = 512
sort_buffer_size = 16M
net_buffer_length = 8K
read_buffer_size = 2M
read_rnd_buffer_size = 8M
myisam_sort_buffer_size = 16M
query_cache_size = 32M
query_cache_type = 1                                                                                                                                           
max_connections = 1024                                                                                                                                         
expire_logs_days = 10                                                                                                                                          
max_binlog_size= 256M                                                                                                                                          
long_query_time=1                                                                                                                                              
slow_query_log=1 

#innodb_data_home_dir = /usr/local/mysql/data
#innodb_data_file_path = ibdata1:10M:autoextend
#innodb_log_group_home_dir = /usr/local/mysql/data
# You can set .._buffer_pool_size up to 50 - 80 %
# of RAM but beware of setting memory usage too high
innodb_buffer_pool_size = 1G
innodb_additional_mem_pool_size = 128M
# Set .._log_file_size to 25 % of buffer pool size
innodb_log_file_size = 256M
innodb_log_buffer_size = 8M
#修改此参数，可以大幅度提高数据库性能
innodb_flush_log_at_trx_commit = 2                                                                                                                                          

#innodb_max_dirty_pages_pct = 90                                                                             
#innodb_lock_wait_timeout = 120