How to find out if Android Studio is actually using the Intel HAXM accelerator?

According to the Android Studio documentation you can run the following:

$ ./sdk/emulator/emulator -accel-check

And if you see the following you have it installed:

accel:
0
HAXM version 6.0.3 (3) is installed and usable.
accel

If your emulator is running with HAXM, you'll see output like this in your run console in Android Studio, with the relevant line being the "HAX is working" bit:

Waiting for device.
/Users/sbarta/sdk/tools/emulator -avd x86-API10 -netspeed full -netdelay none

HAX is working and emulator runs in fast virt mode
Device connected: emulator-5554

Or, according to Intel's official Installation Instructions for Intel® Hardware Accelerated Execution Manager:

To verify that Intel HAXM is running, open a Command Prompt window with administrator privileges (Run as Administrator) and execute the following command:

sc query intelhaxm

If Intel HAXM is working, the command will show a status message indicating that the state is: "4 RUNNING".

It's really easy. just open cmd and do what I did base on below image:

If you see the response like mine, it means that the Haxm is working.