تنظیمات فعلی my.cnf را اینجوری ست کردم. نظرتون؟
skip-external-locking
key_buffer_size = 256M
max_allowed_packet = 1M
table_open_cache = 256
sort_buffer_size = 1M
read_buffer_size = 1M
read_rnd_buffer_size = 4M
myisam_sort_buffer_size = 64M
thread_cache_size = 8
query_cache_size= 16M
# Try number of CPU's*2 for thread_concurrency
thread_concurrency = 8
join_buffer_size = 128
tmp_table_size = 16M
max_heap_table_size=16M
از mysqltuner هم کمک گرفتم