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Date:      Tue, 18 Aug 2015 15:40:30 +0200
From:      Hans Petter Selasky <hps@selasky.org>
To:        Svatopluk Kraus <onwahe@gmail.com>
Cc:        "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>
Subject:   Re: DWC OTG TX path optimisation for 11-current
Message-ID:  <55D335CE.4080702@selasky.org>
In-Reply-To: <CAFHCsPW6A8rdGqmpk9VjfABoH9iubr_vOjW4rw6GKVtbo6_nmA@mail.gmail.com>
References:  <55A7D8CE.4020809@selasky.org> <55B8AB76.7030603@selasky.org> <CAFHCsPUMaYEwJsaGUFuw9yZi_5bmraSBsOYpRWvSeuebpXBJUA@mail.gmail.com> <55B8B297.1010008@selasky.org> <CAFHCsPVGLs8j6LAV%2Bg4rP_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> <55D31D11.3050509@selasky.org> <CAFHCsPXbBSpkDtggN%2BiBm=vpYwOTpi7nH=Z0G4RiyvoVXuw7_g@mail.gmail.com> <55D32912.1070707@selasky.org> <CAFHCsPU=OtdS9XCcbRQwEsymsjTq6aEtnNbDYOmS7DzHaKv7sA@mail.gmail.com> <55D331D7.9080702@selasky.org> <CAFHCsPW6A8rdGqmpk9VjfABoH9iubr_vOjW4rw6GKVtbo6_nmA@mail.gmail.com>

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On 08/18/15 15:34, Svatopluk Kraus wrote:
> On Tue, Aug 18, 2015 at 3:23 PM, Hans Petter Selasky <hps@selasky.org> wrote:
>> On 08/18/15 15:12, Svatopluk Kraus wrote:
>>>
>>> On Tue, Aug 18, 2015 at 2:46 PM, Hans Petter Selasky <hps@selasky.org>
>>> wrote:
>>>>
>>>> On 08/18/15 14:31, Svatopluk Kraus wrote:
>>>>>
>>>>>
>>>>> On Tue, Aug 18, 2015 at 1:54 PM, Hans Petter Selasky <hps@selasky.org>
>>>>> wrote:
>>>>>>
>>>>>>
>>>>>> 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.
>>>>>>
>>>>>
>>>>> Note that my root filesystem was on usb disk.
>>>>>
>>>>
>>>> Is the console still not responding properly after this command?
>>>>
>>>
>>> System response time is still bad.
>>>
>>
>> Is "kgdb" working on your setup? Can you dump all kernel threads?
>
> db> ps
>    pid  ppid  pgrp   uid   state   wmesg     wchan    cmd

>

Not "ps", but "alltrace" I think.

--HPS



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