why does it still run while I have already make isLoggable false??

[AtlantisFaded]

I have check it out that Logger is still running while I set isLoggable() false.
Function Utils.toString(object) is called.

I think it's not proper. Coz I usually add some logs in debug mode. But it crashed on production enviroment. And it's out of my control. Also it cost cpu. Sometimes performance is not good.