From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jianbo Liu Subject: Re: [PATCH v3 0/5] vhost: optimize enqueue Date: Fri, 23 Sep 2016 18:41:30 +0800 Message-ID: References: <1471319402-112998-1-git-send-email-zhihong.wang@intel.com> <1471585430-125925-1-git-send-email-zhihong.wang@intel.com> <8F6C2BD409508844A0EFC19955BE09414E7B5581@SHSMSX103.ccr.corp.intel.com> <20160922022903.GJ23158@yliu-dev.sh.intel.com> <8F6C2BD409508844A0EFC19955BE09414E7B5DAE@SHSMSX103.ccr.corp.intel.com> <8F6C2BD409508844A0EFC19955BE09414E7B5ED5@SHSMSX103.ccr.corp.intel.com> <8F6C2BD409508844A0EFC19955BE09414E7B6204@SHSMSX103.ccr.corp.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Cc: Yuanhan Liu , Maxime Coquelin , "dev@dpdk.org" To: "Wang, Zhihong" Return-path: Received: from mail-yw0-f176.google.com (mail-yw0-f176.google.com [209.85.161.176]) by dpdk.org (Postfix) with ESMTP id BE7155922 for ; Fri, 23 Sep 2016 12:41:31 +0200 (CEST) Received: by mail-yw0-f176.google.com with SMTP id u82so110692338ywc.2 for ; Fri, 23 Sep 2016 03:41:31 -0700 (PDT) In-Reply-To: <8F6C2BD409508844A0EFC19955BE09414E7B6204@SHSMSX103.ccr.corp.intel.com> List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On 23 September 2016 at 10:56, Wang, Zhihong wrote: ..... > This is expected because the 2nd patch is just a baseline and all optimization > patches are organized in the rest of this patch set. > > I think you can do bottleneck analysis on ARM to see what's slowing down the > perf, there might be some micro-arch complications there, mostly likely in > memcpy. > > Do you use glibc's memcpy? I suggest to hand-crafted it on your own. > > Could you publish the mrg_rxbuf=on data also? Since it's more widely used > in terms of spec integrity. > I don't think it will be helpful for you, considering the differences between x86 and arm. So please move on with this patchset... Thanks! Jianbo