sunil.ag...@gmail.com writes: > Hello List, > > I am a graduate student trying to learn about virtualization. I wanted > to understand if there is any way to tell about resource consumption > of guest through Qemu ? e.g. if guest starts doing something cpu > intensive, would qemu be aware of that ? or is there a way to detect > that from qemu ?
I assume your talking about a KVM quest rather than a system emulated guest within QEMU? KVM guests will appear as normal user-space tasks to the host OS so your normal top/htop/iotop tools will show activity associated with that guest. I don't think qemu directly monitors CPU utilisation but I could be wrong. Other information is available though - see docs/virtio-ballon-stats.txt for example. Things that trap to QEMU (i.e. hardware access, virtio) however can certainly be tracked. The the guest is in a pure CPU loop then qemu won't know about it until the next event it has to deal with. -- Alex Bennée
