What will happen if i disable ppp accounting from PPP Authentication&Accounting

I am not running any radius server for PPPoE users, so what will happen if i disable ppp accounting from PPP>Secret> Authentication&Accounting, right now its checked item so its enabled.

If you don’t use radius, Nothing! But question is why you need to disable it?!

Just trying to save my ccr cpu usage, if accounting is enable so it may use some cpu