From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [RFC net-next 0/6] tcp: remove prequeue and header prediction Date: Mon, 31 Jul 2017 14:38:18 -0700 (PDT) Message-ID: <20170731.143818.699405961193908260.davem@davemloft.net> References: Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: ycheng@google.com, ncardwell@google.com, fw@strlen.de, netdev@vger.kernel.org, soheil@google.com, weiwan@google.com, brakmo@fb.com, lorenzo@google.com, vanj@google.com To: edumazet@google.com Return-path: Received: from shards.monkeyblade.net ([184.105.139.130]:45924 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751697AbdGaViT (ORCPT ); Mon, 31 Jul 2017 17:38:19 -0400 In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: From: Eric Dumazet Date: Mon, 31 Jul 2017 13:22:22 -0700 > On Mon, Jul 31, 2017 at 1:04 PM, Yuchung Cheng wrote: >> by the time these devices use 4.12 kernels they are likely powerful >> enough to make header prediction irrelevant... > > Also note that TCP stack complexity has increased a lot, I seriously > doubt anyone could notice any difference. > > On small devices, the major cost is the wakeup of the cpu to process > one frame before going back to idle... I agree with Yuchung and Eric on all counts.