I've been running Qemu on Fedora for years without any problems. But lately I've been seeing very high loads from the qemu-system-x86 process on my host.
It happens with both Linux and Windows guests. When the load is high the guest is unusable -- the mouse won't track on the guest's desktop, the UI is unresponsive, and the system won't respond to a request from Virtual Machine Manager to shutdown gracefully. It doesn't happen all the time, and rebooting my host seems to help. Sometimes I can let the guest run for a while and the load will come down, but other times I have to kill it
I'm running Fedora 37 on an Intel NUC11PAHi7, with version 7.0.0 of QEMU and version 6.1.7 of the Kernel. I've recently upgraded my hardware, and was using a 10th generation NUC until recently. The 6.1 kernel hit the Fedora repos at about the same time the problem started for me.
I've been searching online, and don't think this is happening to very many people, but I did find a couple of other descriptions of a problem that seems similar. This guy says that he's running Arch, and he's tried to make things work on different host systems:
Has anyone here seen this problem?
Thanks,