From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: [RFC PATCH 1/2] net: Add new network device function to allow for MMIO batching Date: Fri, 13 Jul 2012 18:23:24 +0200 Message-ID: <1342196604.3265.8485.camel@edumazet-glaptop> References: <20120712002103.27846.73812.stgit@gitlad.jf.intel.com> <20120712002603.27846.23752.stgit@gitlad.jf.intel.com> <1342077259.3265.8232.camel@edumazet-glaptop> <4FFEEF99.7030707@intel.com> <1342165129.3265.8320.camel@edumazet-glaptop> <20120713085007.596a2924@nehalam.linuxnetplumber.net> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: Alexander Duyck , netdev@vger.kernel.org, davem@davemloft.net, jeffrey.t.kirsher@intel.com, edumazet@google.com, bhutchings@solarflare.com, therbert@google.com, alexander.duyck@gmail.com To: Stephen Hemminger Return-path: Received: from mail-bk0-f46.google.com ([209.85.214.46]:63219 "EHLO mail-bk0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756760Ab2GMQX3 (ORCPT ); Fri, 13 Jul 2012 12:23:29 -0400 Received: by bkwj10 with SMTP id j10so3318768bkw.19 for ; Fri, 13 Jul 2012 09:23:28 -0700 (PDT) In-Reply-To: <20120713085007.596a2924@nehalam.linuxnetplumber.net> Sender: netdev-owner@vger.kernel.org List-ID: On Fri, 2012-07-13 at 08:50 -0700, Stephen Hemminger wrote: > On Fri, 13 Jul 2012 09:38:49 +0200 > Eric Dumazet wrote: > > > Frankly what percentage of linux powered machines act as high perf > > routers ? > > More than you think, every Linux machine acting as hypervisor (Xen and KVM) > is also doing this. High perf router meant : ability to route 10 Mpps, without help of TSO. If an hypervisor is enable to use TSO, I expect very bad performances anyway.