Android code debugging in eclipse

I used to use log for a long time. I can see that something went wrong ~ So tired ~

Later, we found that using debug can debug breakpoints.

I feel much more convenient ~ But I always think the simulator is very slow ~ How can I test a real machine ~ Change the value of Android: debuggable = "false" in androidmanifest. XML to true ~ PS: the only problem is that the heap usage during debugging is a little high. The Heap has a very high app, and the heap can only wait for debugging ~ Finally, I still cannot get in. Who knows how to break it? Please tell me ~