Hi Abhi,
You will find all that you need to know regarding performance and monitoring here : http://pubs.vmware.com/vsphere-51/topic/com.vmware.ICbase/PDF/vsphere-esxi-vcenter-server-51-monitoring-performance-guide.pdf
You need to personalize your charts. For me i think you will find what you need on page 102. (Sorry not sure because now with vmware all documentation are automatically see in your current language 
).
Regards,
Julien