Hi folks, I found that the “cpu time used” meter actually means “cpu time used *since last boot-up*”, at least in libvirt environments. It will be reset to ZERO after VM restart. As far as I understand, a cumulative type meter should be strictly increasing, so it looks very strange to me. My questions are: 1, Since I have libvirt environment only, I haven’t tested on vsphere or any others. Does it behave the same in other environments? 2, Is it intended to be like this? 2, What should a billing system do to correctly use this meter? Please help :) Thanks a lot! Kurt Rao ChinaCloud Information Technology Co., Ltd. E_mail: raodingyuan at chinacloud.com.cn <mailto:raodingyuan at chinacloud.com.cn> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20140703/36b3f2fc/attachment.html>