Slow Performance of SAP ERP 6.0

Hi Experts,

Memory Status

Main:

Free physical memory: 36,997,140KB

Free swap size: 116,247,096KB

Appserver1:

Free physical memory: 16,817,284KB

Free swap size: 38,258,968KB

Appserver2:

Free physical memory: 17,000,212KB

Free swap size: 40,295,084KB

I just notice when filtering, creating user, deleting user, editing user, and transporting it takes time to load.

I don't know how to boost the performance. Please Help