If site is very slow add following adjustment in MySQL file my.conf

in MySQL file my.conf

innodb_buffer_pool_size=12M
innodb_additional_mem_pool_size=500K
innodb_log_buffer_size=500K
innodb_thread_concurrency=2

key_buffer_size = 32M
thread_cache_size = 8
query_cache_size = 256M
query_cache_limit = 256M
tmp_table_size = 32M
max_heap_table_size = 32M?