From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?iso-8859-1?Q?M=E5ns_Rullg=E5rd?= Subject: Re: [RFC PATCH v2 0/2] nb8800 suspend/resume support Date: Thu, 03 Aug 2017 13:19:41 +0100 Message-ID: References: <33d1ab47-6098-5e3f-8a3c-f72626d07113@free.fr> <9e8e12b1-74e2-8323-ec16-eebda46b2a3d@free.fr> <6906dccf-bec9-0fc8-a34a-c39c05ada917@free.fr> <71dd7987-8c43-2548-5058-51a95658da71@free.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8BIT Cc: Florian Fainelli , David Miller , netdev , Linux ARM To: Mason Return-path: Received: from unicorn.mansr.com ([81.2.72.234]:38442 "EHLO unicorn.mansr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751083AbdHCMTm (ORCPT ); Thu, 3 Aug 2017 08:19:42 -0400 In-Reply-To: (Mason's message of "Thu, 3 Aug 2017 10:34:31 +0200") Sender: netdev-owner@vger.kernel.org List-ID: Mason writes: > IIUC, sender (desktop system) sends datagrams as fast as possible. > Receiver (tango board) drops around 24% of all datagrams. > I think this invalidates the theory that exhausting RX descriptors > wedges RX DMA. No, it doesn't. The bottleneck causing packet loss could be somewhere else. -- Måns Rullgård