Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755682AbZFEKDb (ORCPT ); Fri, 5 Jun 2009 06:03:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752180AbZFEKDW (ORCPT ); Fri, 5 Jun 2009 06:03:22 -0400 Received: from smtp-out.google.com ([216.239.33.17]:5468 "EHLO smtp-out.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752052AbZFEKDV (ORCPT ); Fri, 5 Jun 2009 06:03:21 -0400 DomainKey-Signature: a=rsa-sha1; s=beta; d=google.com; c=nofws; q=dns; h=mime-version:in-reply-to:references:date:message-id:subject:from:to: cc:content-type:content-transfer-encoding:x-system-of-record; b=khWzlXpKkxmzpJhCgwxIQ18Qnk4YJgiv9jg2on979Stju5T5aJU7T1ZxB0WA/jAYZ nOvJjlp4iBkRpl3knnAJw== MIME-Version: 1.0 In-Reply-To: <20090605095931.GE4601@linux.vnet.ibm.com> References: <20090604053649.GA3701@in.ibm.com> <6599ad830906050153i1afd104fqe70f681317349142@mail.gmail.com> <20090605092733.GA27486@in.ibm.com> <6599ad830906050232n11aa30d8xfcda0a279a482f32@mail.gmail.com> <20090605094811.GD4601@linux.vnet.ibm.com> <6599ad830906050251h18f4e037h182f61aa80a5b046@mail.gmail.com> <20090605095931.GE4601@linux.vnet.ibm.com> Date: Fri, 5 Jun 2009 03:03:18 -0700 Message-ID: <6599ad830906050303r404c325anc60ded4f45a50b95@mail.gmail.com> Subject: Re: [RFC] CPU hard limits From: Paul Menage To: Dhaval Giani Cc: bharata@linux.vnet.ibm.com, linux-kernel@vger.kernel.org, Balbir Singh , Vaidyanathan Srinivasan , Gautham R Shenoy , Srivatsa Vaddagiri , Ingo Molnar , Peter Zijlstra , Pavel Emelyanov , Avi Kivity , kvm@vger.kernel.org, Linux Containers , Herbert Poetzl Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-System-Of-Record: true Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 760 Lines: 19 On Fri, Jun 5, 2009 at 2:59 AM, Dhaval Giani wrote: > > I think we are focusing on the wrong use case here. Guarantees is just a > useful side-effect we get by using hard limits. I think the more > important use case is where the provider wants to limit the amount of > time a user gets (such as in a cloud). > > Maybe we should direct our attention in solving that problem? :) > Yes, that case and the "predictable load test behaviour" case are both good reasons for hard limits. Paul -- 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/