From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754894Ab1GFQqx (ORCPT ); Wed, 6 Jul 2011 12:46:53 -0400 Received: from mx1.redhat.com ([209.132.183.28]:11160 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754815Ab1GFQqv (ORCPT ); Wed, 6 Jul 2011 12:46:51 -0400 Message-ID: <4E148F62.2040003@redhat.com> Date: Wed, 06 Jul 2011 12:37:54 -0400 From: Rik van Riel User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.17) Gecko/20110428 Fedora/3.1.10-1.fc15 Lightning/1.0b3pre Thunderbird/3.1.10 MIME-Version: 1.0 To: Glauber Costa CC: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Jeremy Fitzhardinge , Peter Zijlstra , Avi Kivity , Anthony Liguori , Eric B Munson Subject: Re: [PATCH v5 7/9] KVM-GST: KVM Steal time accounting References: <1309793548-16714-1-git-send-email-glommer@redhat.com> <1309793548-16714-8-git-send-email-glommer@redhat.com> In-Reply-To: <1309793548-16714-8-git-send-email-glommer@redhat.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/04/2011 11:32 AM, Glauber Costa wrote: > This patch accounts steal time time in account_process_tick. > If one or more tick is considered stolen in the current > accounting cycle, user/system accounting is skipped. Idle is fine, > since the hypervisor does not report steal time if the guest > is halted. > > Accounting steal time from the core scheduler give us the > advantage of direct acess to the runqueue data. In a later > opportunity, it can be used to tweak cpu power and make > the scheduler aware of the time it lost. > > Signed-off-by: Glauber Costa > CC: Rik van Riel > CC: Jeremy Fitzhardinge > CC: Peter Zijlstra > CC: Avi Kivity > CC: Anthony Liguori > CC: Eric B Munson Acked-by: Rik van Riel -- All rights reversed