From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933820Ab0J1VlB (ORCPT ); Thu, 28 Oct 2010 17:41:01 -0400 Received: from e35.co.us.ibm.com ([32.97.110.153]:35775 "EHLO e35.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933101Ab0J1Vkz (ORCPT ); Thu, 28 Oct 2010 17:40:55 -0400 Subject: Re: [RFC PATCH 1/1] vhost: TX used buffer guest signal accumulation From: Shirley Ma To: Sridhar Samudrala Cc: "Michael S. Tsirkin" , David Miller , netdev@vger.kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <1288299878.30131.2.camel@sridhar.beaverton.ibm.com> References: <1288216693.17571.38.camel@localhost.localdomain> <1288240804.14342.1.camel@localhost.localdomain> <20101028052021.GD5599@redhat.com> <1288294355.11251.20.camel@localhost.localdomain> <1288296835.11251.24.camel@localhost.localdomain> <1288299878.30131.2.camel@sridhar.beaverton.ibm.com> Content-Type: text/plain; charset="UTF-8" Date: Thu, 28 Oct 2010 14:40:50 -0700 Message-ID: <1288302050.11251.26.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.28.3 (2.28.3-1.fc12) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2010-10-28 at 14:04 -0700, Sridhar Samudrala wrote: > It would be some change in virtio-net driver that may have improved > the > latency of small messages which in turn would have reduced the > bandwidth > as TCP could not accumulate and send large packets. I will check out any latency improvement patch in virtio_net. If that's the case, whether it is good to have some tunable parameter to benefit both BW and latency workload? Shirley