Run n number of emulators and check their status,log etc.,
You can use lot many emulators, but lot many people don't know how to see logcat of different emulators with particular log value.
start two emulators from the Android Device Manager
Look the image how to get particular log from particular emulator.
$ ./adb -s xxxxxxxxxxxxxxxx --options
If you need any additional adb commend, comment on post!!!