From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail11.truemail.it (mail11.truemail.it [IPv6:2001:4b7e:0:8::81]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AC7DAA8 for ; Thu, 7 Dec 2023 02:03:53 -0800 (PST) Received: from francesco-nb.int.toradex.com (93-49-2-63.ip317.fastwebnet.it [93.49.2.63]) by mail11.truemail.it (Postfix) with ESMTPA id 8BCCD1F842; Thu, 7 Dec 2023 11:03:49 +0100 (CET) Date: Thu, 7 Dec 2023 11:03:45 +0100 From: Francesco Dolcini To: Oliver Neukum Cc: Hiago De Franco , Maciej =?utf-8?Q?=C5=BBenczykowski?= , davem@davemloft.net, edumazet@google.com, hiago.franco@toradex.com, kuba@kernel.org, linux-usb@vger.kernel.org, pabeni@redhat.com Subject: Re: Question regarding CDC NCM and VNC performance issue Message-ID: References: <2ce653b3-c553-457f-bcbf-9fce36f82dff@suse.com> <20231206162353.53767-1-hiagofranco@gmail.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Hello Oliver and Maciej On Thu, Dec 07, 2023 at 10:41:51AM +0100, Oliver Neukum wrote: > On 06.12.23 17:23, Hiago De Franco wrote: > > From: Hiago De Franco > > On 06.12.23 13:21, Oliver Neukum wrote: > > > Before we proceed, however, your patch raises a fundamental question: > > > Are we talking about gadget or host mode here? > > > Could you please describe your setup in detail? > > > > Sure, I'm running a Apalis iMX6QD 512MB, which is basically an ARM 32-bits > > device with NXP iMX6QD. This device is running Linux with wayland, weston > > and the neatvnc server, so I can access my app using a vnc client on my > > host PC (also running Linux, Debian 12). > > OK, you are using Linux on _both_ sides. Interesting, far from obvious, though. > (Putting Maciej into CC) One more data point. If the USB host side is Windows and not Linux it works fine. Francesco