Ok so guys:
I am monitoring my website load time. My pages are fired in less than 1 second. But strangely google webmaster tools site performance reports sometime even 4sec to load 1 single page.
So i removed all adsense banner from that page, and now from 4 sec, load time are down to less than 2 sec.
So is there anyway to make adsense loading after window.onload event?