Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030588AbXBFXmU (ORCPT ); Tue, 6 Feb 2007 18:42:20 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030578AbXBFXmU (ORCPT ); Tue, 6 Feb 2007 18:42:20 -0500 Received: from smtp-outbound-1.vmware.com ([65.113.40.141]:37055 "EHLO smtp-outbound-1.vmware.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1030588AbXBFXmT (ORCPT ); Tue, 6 Feb 2007 18:42:19 -0500 Message-ID: <45C9125A.3040704@vmware.com> Date: Tue, 06 Feb 2007 15:42:18 -0800 From: Zachary Amsden User-Agent: Thunderbird 1.5.0.9 (X11/20061206) MIME-Version: 1.0 To: Jeremy Fitzhardinge CC: Andi Kleen , Linux Kernel Mailing List , Andrew Morton , Rusty Russell , Chris Wright Subject: Re: [PATCH 2/11] Sched clock paravirt op References: <200702060352.l163qeAf000727@zach-dev.vmware.com> <20070206123256.GF47229@muc.de> <45C9056A.8060504@vmware.com> <45C90DDA.3060009@goop.org> In-Reply-To: <45C90DDA.3060009@goop.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 822 Lines: 22 Jeremy Fitzhardinge wrote: > Zachary Amsden wrote: > >> Scheduled (or available) time and real time are good notions. Stolen >> time is debatable. But TSC is basically just always wrong. That's >> why I don't want to overload the rdtsc operation. >> > Well, in the Xen case it is actually guaranteed to be correct and useful > as real time, but that's definitely not something we can expect in > general. But you're talking specifically about schedulable vcpu time > here, right? > Not schedulable time, scheduled time (schedulable - scheduled) = stolen Zach - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/