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

The same problem with qemu on Win7, HAXM 7.2.0. I've tried switch off audio, it didn't help, qemu consumes about 20% of CPU anytime, Android works very slow on both x86 and x64 images.

I've found solutions in HAXM's Release Notes file:

• On Windows, Avast Antivirus may interfere with HAXM and cause Android Emulator or QEMU to run very slowly. A workaround is to uncheck "Use nested virtualization where available" in Avast Settings > Troubleshooting.

I have Avast Pro Antivirus 18.5. I've unchecked this param, rebooted PC and now qemu consumes 0% in idle, Android works fine.

UPDATE: if QEMU started consume CPU again, first check Avast's update status. After background update Avast may start to interfere to HAXM again. Just reboot Windows to solve it.