[libvirt-users] vm live migration memory copy

2017-06-04 Thread Hui Jing
Hi All, I am wondering when we do live migration, how much memory is transferred? I guess it must be one of the three below, but not sure which one: 1. The amount of memory allocated to VM 2. The memory currently used by VM (actual Mem usage in guest) 3. The memory used by the qemu process (RSS).

[libvirt-users] Performance monotoring: Perf Event support

2017-04-24 Thread Hui Jing
Hi everyone, I am using libvirt 2.5.0. I'd like to enable the "perf events" to monitoring my vm performance such as l3 cache. But it failed with "error: argument unsupported: unable to enable host cpu perf event for cmt". 1. Could you please give some hints on how to check if my host CPU supports