From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757550AbaCTKtB (ORCPT ); Thu, 20 Mar 2014 06:49:01 -0400 Received: from smtp02.citrix.com ([66.165.176.63]:26554 "EHLO SMTP02.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757480AbaCTKs5 (ORCPT ); Thu, 20 Mar 2014 06:48:57 -0400 X-IronPort-AV: E=Sophos;i="4.97,694,1389744000"; d="scan'208";a="111824541" Date: Thu, 20 Mar 2014 10:48:55 +0000 From: Wei Liu To: Zoltan Kiss CC: , , , , , , Paul Durrant Subject: Re: [PATCH net-next v7 9/9] xen-netback: Aggregate TX unmap operations Message-ID: <20140320104855.GA16285@zion.uk.xensource.com> References: <1394142511-14827-1-git-send-email-zoltan.kiss@citrix.com> <1394142511-14827-10-git-send-email-zoltan.kiss@citrix.com> <532A0915.5090006@citrix.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <532A0915.5090006@citrix.com> User-Agent: Mutt/1.5.21 (2010-09-15) X-DLP: MIA1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Mar 19, 2014 at 09:16:05PM +0000, Zoltan Kiss wrote: > Hi, > > I'm thinking about revoking this patch: it's value is pretty small, > but it causes performance regression on Win7 guests. And probably it > is not the best solution for this problem. It might be the delay it > takes the dealloc thread to be scheduled is enough. > What do you think? > Can you elaborate? What makes Win7 so special? What's performance impact to other guests? Wei.