From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755941Ab2D3JNQ (ORCPT ); Mon, 30 Apr 2012 05:13:16 -0400 Received: from mx1.redhat.com ([209.132.183.28]:10423 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752853Ab2D3JNO (ORCPT ); Mon, 30 Apr 2012 05:13:14 -0400 Date: Mon, 30 Apr 2012 12:12:47 +0300 From: "Michael S. Tsirkin" To: Rick Jones Cc: Shirley Ma , David Miller , eric.dumazet@gmail.com, avi@redhat.com, arnd@arndb.de, netdev@vger.kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: getting host CPU utilization (was Re: [PATCH V7 2/4 net-next] skbuff: Add userspace zero-copy buffers in skb) Message-ID: <20120430091246.GB5414@redhat.com> References: <1306610588.5180.87.camel@localhost.localdomain> <1309189510.21764.1.camel@localhost.localdomain> <20110627.155426.51839633424542723.davem@davemloft.net> <1309279892.3559.6.camel@localhost.localdomain> <4E0A0D34.2070507@hp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4E0A0D34.2070507@hp.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jun 28, 2011 at 10:19:48AM -0700, Rick Jones wrote: > one of these days I'll have to find a good way to get accurate > overall CPU utilization from within a guest and teach netperf about > it. I think the cleanest way would be to run another netperf server on the host. netperf would get a flag with host address and get cpu utilization info. This is what we currently do manually: run mpstat on the host. Thoughts? By the way, could you point me to code used by netperf to measure CPU utilization on Linux? I'd like to figure out why isn't the result always consistent with e.g. mpstat. Thanks! -- MST