mysql myisam 优化设置设置

myisam_max_[extra]_sort_file_size足够大

delay_key_write减少io,提高写入性能

bulk_insert_buffer_size

concurrent_insert 设置为2

read_rnd_buffer_size random scan 使用

read_buffer_size 顺序扫描表使用

key cache 的三种方式

key cache 预加载

set global hot_cache.key_buffer_size=16m

set blobal cold_cache.key_buffer_size=16m

cache index example.top_message in hot_cache

cache index example.event in cold_cache

load index into cache example.top_message,example.event ignore leaves

load index into cache example.user ignore leavers,expamle.groups

mysql 优化设置步骤