From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: Re: [PATCH net-next] tcp: introduce TCPSpuriousRtxHostQueues SNMP counter Date: Thu, 18 Apr 2013 10:45:10 -0700 Message-ID: <20130418104510.3624457a@nehalam.linuxnetplumber.net> References: <1366303971.3205.62.camel@edumazet-glaptop> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: David Miller , netdev , Yuchung Cheng , Neal Cardwell , Tom Herbert , Willem de Bruijn To: Eric Dumazet Return-path: Received: from mail-da0-f41.google.com ([209.85.210.41]:44780 "EHLO mail-da0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753647Ab3DRRpl (ORCPT ); Thu, 18 Apr 2013 13:45:41 -0400 Received: by mail-da0-f41.google.com with SMTP id p8so1374683dan.14 for ; Thu, 18 Apr 2013 10:45:41 -0700 (PDT) In-Reply-To: <1366303971.3205.62.camel@edumazet-glaptop> Sender: netdev-owner@vger.kernel.org List-ID: On Thu, 18 Apr 2013 09:52:51 -0700 Eric Dumazet wrote: > From: Eric Dumazet > > Host queues (Qdisc + NIC) can hold packets so long that TCP can > eventually retransmit a packet before the first transmit even left > the host. I though you were use fq_codel ;-) and that wouldn't happen.