From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: Strange latency spikes/TX network stalls on Sun Fire X4150(x86) and e1000e Date: Wed, 06 Jun 2012 10:26:34 -0700 (PDT) Message-ID: <20120606.102634.778505411377860720.davem@davemloft.net> References: <20120606174303.0bfc9868.shimoda.hiroaki@gmail.com> <20120606092635.00003b61@unknown> <1339002304.26966.16.camel@edumazet-glaptop> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: jesse.brandeburg@intel.com, shimoda.hiroaki@gmail.com, therbert@google.com, denys@visp.net.lb, netdev@vger.kernel.org, e1000-devel@lists.sourceforge.net, jeffrey.t.kirsher@intel.com To: eric.dumazet@gmail.com Return-path: Received: from shards.monkeyblade.net ([149.20.54.216]:37565 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757422Ab2FFR0i (ORCPT ); Wed, 6 Jun 2012 13:26:38 -0400 In-Reply-To: <1339002304.26966.16.camel@edumazet-glaptop> Sender: netdev-owner@vger.kernel.org List-ID: From: Eric Dumazet Date: Wed, 06 Jun 2012 19:05:04 +0200 > You cant hold a TX completion indefinitely, this breaks BQL but also > other stuff. True.