High CPU usage with Android emulator (qemu-system-i386.exe)

Question

The emulator qemu-system-i386.exe cpu usage almost constantly running between 7~9

Android studio 2.1 Android SDK Tools: 25.1.3 Host Operating System: Windows 7 - i7

Answer 1

Disable location in settings and also disable touch sounds.

Answer 2

To find out what on the virtual device is using the most CPU:

adb shell

$ top

This will show you a list of processes with the highest CPU usage atop.

This will help you determine whether it's a process (such as your app) inside the emulator, another process inside the emulator, or just the emulation itself using a lot of CPU.

In the latter case, try optimizing the emulator by installing HAX (Native intel instructions) or perhaps enable hardware acceleration using the AVD profile editor.

Answer 3

my case, coz I choose software for graphics rendering in adv. so after a change to the hardware reduce CPU usage from 60 to 10, and CPU temp from 70 to 40.

Answer 4

In my case it was the fast boot that was causing the problem, to force into normal boot open the text file in C:\Users\<username>\.android\avd\<AVD name>\config.ini and change at least one of the values.

for example change the line

hw.battery=yes 

to

hw.battery=no

Answer 5

Using kind of old Android version I used Lollipop Galaxy Nexus API 22 dropped CPU usage from 220% to around 30% ! ...

I also switched: Emulated Performance > Graphics > Hardware

Using Android Api 25 ... Hardware for graphics and turning off AVD audio and GPS didn't work for me...

Platform: MacOS

Answer 6

Changing the resolution worked form me. I was using 1440 x 2560 560 dpi Oreo 8.1. Now im using M-DPI Oreo 8.1