On Mon, Apr 24, 2017 at 06:54:32PM +0200, Hui Jing wrote: > 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 > cmt,mbm, is it displayed in /proc/cpuinfo? It would be listed by 'virsh capabilities' as 'cmt', or in /proc/cpuinfo as 'cqm'. You need pretty particular CPU models too - many Intel models don't support this even brand new ones. > 2. Does the kernel version matters as well to support it? Yes, but I don't recall which version Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :| _______________________________________________ libvirt-users mailing list libvirt-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvirt-users
