<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content="text/html; charset=iso-8859-1" http-equiv=Content-Type> <META name=GENERATOR content="MSHTML 8.00.6001.19088"> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV> I have been playing with KVM virtual servers on Red Hat and used the virt-top tool to monitor CPU utilization. I am puzzled by an observation that I was wondering if someone could explain: I have a 32-CPU blade and a KVM virtual server with 2 virtual CPUs on it. I am running some tight loops in this virtual server and pushing the CPU usage on it. What I see on virt-top is 7% utilization for this virtual server. The way I interpret it is 7% of 32 CPUs, which is 2.24 CPUs in use (7 * 32 / 100). What I am puzzled about is that I would not have expected this virtual server to use more than 2 CPUs since it only has 2 virtual CPUs assigned. Is it expected that KVM virtual servers could consume more than the number of virtual CPUs assigned to them or is this a known Linux accounting problem? Yüksel Günal</DIV></BODY></HTML>