From owner-freebsd-arm@freebsd.org  Tue Aug 18 11:53:34 2015
Return-Path: <owner-freebsd-arm@freebsd.org>
Delivered-To: freebsd-arm@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id C1A2D9BC7D5
 for <freebsd-arm@mailman.ysv.freebsd.org>;
 Tue, 18 Aug 2015 11:53:34 +0000 (UTC) (envelope-from hps@selasky.org)
Received: from mail.turbocat.net (mail.turbocat.net
 [IPv6:2a01:4f8:d16:4514::2])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 7FA3B1B34
 for <freebsd-arm@freebsd.org>; Tue, 18 Aug 2015 11:53:34 +0000 (UTC)
 (envelope-from hps@selasky.org)
Received: from laptop015.home.selasky.org
 (cm-176.74.213.204.customer.telag.net [176.74.213.204])
 (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
 (No client certificate requested)
 by mail.turbocat.net (Postfix) with ESMTPSA id 84EF21FE023;
 Tue, 18 Aug 2015 13:53:32 +0200 (CEST)
Subject: Re: DWC OTG TX path optimisation for 11-current
To: Svatopluk Kraus <onwahe@gmail.com>
References: <55A7D8CE.4020809@selasky.org>
 <CAHNYxxMp9jGDbV-5=-cE6daR-O3eN5pdvO1s-=QfX=A9XYqYmA@mail.gmail.com>
 <55B23276.8090703@selasky.org>
 <CAHNYxxNc9uB62hHEv1PM9PcsGgUs=zsvNgatqLD0p+iiDA3Aiw@mail.gmail.com>
 <55B73113.2020308@selasky.org>
 <CAFHCsPVaPZpqXLS7OApa=Xz5VLnLjVpV5dYV8Pn2uHh1Lcz7Tg@mail.gmail.com>
 <55B8AB76.7030603@selasky.org>
 <CAFHCsPUMaYEwJsaGUFuw9yZi_5bmraSBsOYpRWvSeuebpXBJUA@mail.gmail.com>
 <55B8B297.1010008@selasky.org>
 <CAFHCsPVGLs8j6LAV+g4rP_ueTOd8pUOupYFGvmgC3XGcJC720Q@mail.gmail.com>
 <20150729154516.GH78154@funkthat.com> <55B8F5EC.2050908@selasky.org>
 <46ad096c958.1a82a175@mail.schwarzes.net> <55B9C3E2.5040501@selasky.org>
 <46ae815c7c3.447237c8@mail.schwarzes.net>
 <46aece00b53.3c1cdc1f@mail.schwarzes.net> <55BB2A5F.9000502@selasky.org>
 <46baa16c4ce.6efd29ef@mail.schwarzes.net> <55CF31A1.5080205@selasky.org>
 <CAFHCsPUKwNLkeSPSHHUs=vwFFAnBd_9HRPxaS6tEC0cR3y_C6Q@mail.gmail.com>
Cc: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>
From: Hans Petter Selasky <hps@selasky.org>
Message-ID: <55D31D11.3050509@selasky.org>
Date: Tue, 18 Aug 2015 13:54:57 +0200
User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:38.0) Gecko/20100101
 Thunderbird/38.1.0
MIME-Version: 1.0
In-Reply-To: <CAFHCsPUKwNLkeSPSHHUs=vwFFAnBd_9HRPxaS6tEC0cR3y_C6Q@mail.gmail.com>
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 7bit
X-BeenThere: freebsd-arm@freebsd.org
X-Mailman-Version: 2.1.20
Precedence: list
List-Id: "Porting FreeBSD to ARM processors." <freebsd-arm.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-arm>,
 <mailto:freebsd-arm-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-arm/>
List-Post: <mailto:freebsd-arm@freebsd.org>
List-Help: <mailto:freebsd-arm-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-arm>,
 <mailto:freebsd-arm-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 18 Aug 2015 11:53:34 -0000

Hi,

On 08/18/15 13:22, Svatopluk Kraus wrote:
> Do I understand it well that you are not able to trigger the problem?

Maybe I haven't been trying hard enough. I've been using a kernel built 
from "projects/hps_head" which I just updated to include the latest DWC 
OTG patches, instead of "head". There was today a timer subsystem fix, 
not sure if it makes any difference:

https://svnweb.freebsd.org/changeset/base/286880

I will try to buildworld from an external USB disk later today and see 
what happens.

>
> and still the system response time is terrible.

If you can do:

usbconfig -d 0.1 set_config 255

And verify that the IRQ rate goes to zero for DWC OTG, then we maybe 
could rule out USB.

--HPS