Configurações:
key_buffer_size=196M sort_buffer=1M join_buffer=1M max_join_size=2M thread_concurrency=16 thread_cache=5 table_cache=2000 interactive_timeout=45 wait_timeout=45 max_heap_table_size=128M tmp_table_size=2G query_cache_limit=1M query_cache_size=512M max_connections=500 max_user_connections=30 innodb_buffer_pool_size=128M innodb_file_per_table=1 innodb_log_file_size=5M innodb_thread_concurrency=4