https://bugzilla.redhat.com/show_bug.cgi?id=1613990


Eric

From: Cole Robinson <crobinso@redhat.com>
Sent: Tuesday, August 7, 2018 2:11:05 PM
To: Community support for Fedora users; Eric Phetteplace
Subject: Re: gnome-boxes, high cpu when guest is idle
 
On 08/01/2018 08:56 AM, Eric Phetteplace wrote:
> Solved
>
> I removed
> <smartcard mode='passthrough' type='spicevmc'>
>        <address type='ccid' controller='0' slot='0'/>
> </smartcard>
>
> and the cpu usage dropped to match the guest.
>
> FWIW, to track this down, I created a Fedora server using virt-manager and another with Boxes and reproduced the issue.  I compared their ps -lf outputs and tried removing the extra components, and removing smartcard made the difference.

Thanks for tracking this down Eric. Can you file a bug against
Product=Fedora component=qemu in  bugzilla.redhat.com so we don't lose
these details?

Thanks,
Cole