From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754876AbaHUVEv (ORCPT ); Thu, 21 Aug 2014 17:04:51 -0400 Received: from mx1.redhat.com ([209.132.183.28]:47233 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754201AbaHUVEu (ORCPT ); Thu, 21 Aug 2014 17:04:50 -0400 Date: Thu, 21 Aug 2014 23:03:37 +0200 From: Radim =?utf-8?B?S3LEjW3DocWZ?= To: Raghavendra K T Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Paolo Bonzini , Gleb Natapov , Vinod Chegu , Hui-Zhi Zhao , Christian Borntraeger , Lisa Mitchell Subject: Re: [PATCH v3 6/7] KVM: VMX: runtime knobs for dynamic PLE window Message-ID: <20140821210337.GB30423@potion.brq.redhat.com> References: <1408637291-18533-1-git-send-email-rkrcmar@redhat.com> <1408637291-18533-7-git-send-email-rkrcmar@redhat.com> <53F645DF.4080101@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <53F645DF.4080101@linux.vnet.ibm.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 2014-08-22 00:47+0530, Raghavendra K T: > Positive thing about able to change default grow/shrink value is the > flexibility of tuning ple window to different workloads and different > number of cpus. > > But is it that a value of shrink = 1 and grow > 1 is problematic ? > (running a undercommit workload and then overcommit workload) Yeah, could have mentioned it in commit message, but I hope that my previous email explained it. (1 = don't shrink, design decision :)