Guest systems are slow when host system is creating new guest, and gain normal speed again after creation process accomplishes. I wonder is there anything I can do about this like limiting usage of CPU or RAM resources? Though despite some jumping in CPU usage it is generally ok. But RAM gets filled up, though buffer/cache has quite large room:
free -m total used free shared buffers cached Mem: 64398 64152 245 0 25 46363 -/+ buffers/cache: 17763 46635 Swap: 66591 515 66076
Am I experiencing RAM insufficiency? What buffer/cache sizes mean in this situation?