select EVENT_NAME, HIGH_NUMBER_OF_BYTES_USED
from performance_schema.memory_summary_global_by_event_name
where HIGH_NUMBER_OF_BYTES_USED > 0 order by 2 desc limit 10;
2. 현재 할당 된 총 메모리양
select event_name,current_alloc from sys.memory_global_by_current_bytes;
3. 스레드 별로 할당된 메모리양
select thread_id,user,current_allocated from sys.memory_by_thread_by_current_bytes limit 5;