[Pianod] Testing on v234

[Bruce M. Sheplan via Pianod]

To add to Chris's report of success, I have tried to cause the same problem
I was having with libav (pause for > 5mins then resume) and have not had
any lockups.  After the buffer is used up music stops for 5-10secs and the
resumes where it left off, I presume it is re-connecting and rebuffering.

I had another crash yesterday after about 6hrs of continous play, same
place in the library, I am trying to see if I can get a core-dump of the
crash so I have something to send you.

This is still on v234, havent had a chance to try v236 yet.

- B

On Mon, Aug 22, 2016 at 11:22 AM, Chris Greenman via Pianod <
pianod at lists.deviousfish.com> wrote:

> I can provide non-scientifically tested results.   Last time I used the pi
> on my boat with spotty cell coverage I did have 1 instance where I had to
> reboot the pi but I can't say for sure what caused that.   I was in a rush
> and couldn't investigate so easiest thing was to just reboot.   it might
> have also been caused by something external to the PI.  What I CAN say is
> that for the next 3 or so hours it worked flawlessly.  there were some
> hiccups in the audio as if it had lost internet but it picked up where it
> left off fairly quickly.   About the time you noticed the music had stopped
> it starts up again.
>
> That's about as much real world testing I've done with it.   I'll be
> racing this week so I'll try it again, this time with a simpler hookup to
> the internet.  Second wifi interface connecting directly to my cellphone
> hotspot on 5ghz.  It eliminates at least one source of interference on the
> 2.4ghz band.  Before, I used a small travel router that connected on a
> different channel to my phone.
>
> On Sun, Aug 21, 2016 at 11:27 PM, Perette Barella via Pianod <
> pianod at lists.deviousfish.com> wrote:
>
>> Chris Greenman said of his Raspberry Pi with libav wiped and ffmpeg
>> installed:
>>
>> Seems to be working fine.  I haven't tried any network stalls yet but it
>> runs and i can control it.  I followed the instructions below to wipe out
>> libav and install ffmpeg.
>>
>> https://www.assetbank.co.uk/support/documentation/install/ff
>> mpeg-debian-squeeze/ffmpeg-debian-jessie/
>>
>>
>> Awesome.  Glad to hear that’s doable and working… can you confirm that
>> this fixes the hangs on network loss you were seeing?  I’d like to confirm
>> my diagnosis of libav.
>>
>>
>> On 2016年08月21日, at 14:09, Bruce M. Sheplan via Pianod <
>> pianod at lists.deviousfish.com> wrote:
>> On v234, After playing for a couple of hours ( ~2hrs? ) pianod crashed
>> with the following in the log:
>>
>> pianod[15739]: segfault at 2c ip b56199cd sp bfa005a0 error 4 in
>> libgstplayback.so[b560b000+68000]
>>
>>
>> Seems like thats a gstreamer library though so maybe unrelated to pianod
>>
>>
>> It does sound like it’s in the library.  I checked my IDE settings and
>> turned on Guard Malloc, which catches lots of good stuff that causes
>> intermittent problems.  It didn’t turn up anything, nor did a brief leak
>> analysis.  I guess keep an eye on it, see if it recurs and if there’s a
>> pattern to it.  Rare of frequent?  Predictable or intermittent?  Let us
>> know what you see over time.
>>
>> I still need to look into why my Pi hangs up when using hw:1… whether
>> it’s something peculiar to using the tone generator, or if it’s specific to
>> my USB dongle.
>>
>>
>> … and in other news…
>> r236 has a fix to the ffmpeg code to calculate playpoint *before* freeing
>> the packet the data comes out of, resulting in correct answers.  There’s
>> also new #ifdefs for some of the new 3.1 API, with support for older stuff
>> still present.  If I broke anything, let me know.
>>
>> There are other API changes in 3.1 too.  There is still a deprecation
>> warning with 3.1 about using the ‘codec’ field in AVStream, but I’m waiting
>> to hear what the Right Way is to replace this, since (among other issues)
>> the documentation indicates I need to call a method that requires it.  So
>> far, I’ve had two more-or-less same answers to a different question than
>> what I asked.  On the positive side, though, they were coherent and three
>> times more plentiful than libav’s help list, in just hours.
>>
>> Perette
>>
>>
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