[App_rpt-users] Mini Computers

JJC cummingsj at gmail.com
Mon Feb 5 03:12:33 UTC 2018 

And uptime/load info during an active net tonight on the same system:

$ uptime
 20:10:43 up 64 days,  5:18,  1 user,  load average: 0.18, 0.18, 0.21

On Sun, Feb 4, 2018 at 4:54 PM, JJC <cummingsj at gmail.com> wrote:

> I am using USBRadio on one of the nodes (the first that I checked)and here
> is my usb info:
>
>> *Bus 001 Device 004: ID 0d8c:013a C-Media Electronics, Inc.*
>
>
> JJC
> N0PKT
>
> On Sun, Feb 4, 2018 at 3:35 PM, Andrew Sylthe <asylthe at kc9ona.com> wrote:
>
>> I've only ever experienced strange audio issues with usbradio, and have
>> never had an issue running simpleusb on the Pi 3.
>>
>> On Feb 4, 2018 3:51 PM, "Tim Sawyer" <tisawyer at gmail.com> wrote:
>>
>>> I believe stuttering audio only happens on Pi nodes running USBradio. My
>>> understanding is the Rasperry Pi does not have enough horsepower for
>>> USBradio.      SimpleUSB should not a problem but if anyone knows different
>>> please speak up.
>>>
>>> On Sun, Feb 4, 2018 at 11:53 AM, Dave Maciorowski <wa1jhk at macski.us>
>>> wrote:
>>>
>>>> Hi All,
>>>>
>>>> I'd like to know more about your setups, Jay's that are working and Jon
>>>> and Skyler's that have issues.  Do you use simpleusb or usbradio?  What
>>>> USB-to-audio interface are you using including the line returned by the
>>>> lsusb command.  Here's mine:
>>>>
>>>> Bus 001 Device 004: ID 0d8c:000e C-Media Electronics, Inc. Audio
>>>> Adapter (Planet UP-100, Genius G-Talk)
>>>>
>>>> I ask because I'm chasing an interface issue that might be related.
>>>>
>>>> Thanks.
>>>>
>>>>   Dave
>>>>   WA1JHK
>>>>
>>>> On 2/4/2018 9:47 AM, JJC wrote:
>>>>
>>>> I wish that I had a magic formula for you.  All that I can say is that
>>>> we run minimal setups (least possible number of running processes and
>>>> installed packages) on the Pis and we are sure to use the correct audio COR
>>>> interfaces etc... We also are meticulous in setting up levels using service
>>>> monitors of all of the radios themselves.  I help to maintain a large
>>>> system (That Skyler has used frequently in the past) which is primarily run
>>>> on PIs and we have not had any of the issues that you guys are
>>>> experiencing.  Wish I could be of more help, but I truly do not believe
>>>> that it's an issue caused by the Pi.
>>>>
>>>> JJC
>>>> N0PKT
>>>>
>>>> On Sun, Feb 4, 2018 at 8:57 AM, REDBUTTON_CTRL <jrorke at cogeco.ca>
>>>> wrote:
>>>>
>>>>> I too have had the sputtering audio issues. Mostly it starts to
>>>>> degrade over a few days. I have run dial on Pi2 s and HP thin clients. and
>>>>> so far all of them need periodic reboots or asterisk restarts to clean up
>>>>> the audio.
>>>>>
>>>>> I am using DIAL Full DSP with tone encode and decode. Some units have
>>>>> 2 or 3 or nodes. Even a single node pi does it.
>>>>> So if you have a magic set up that fixes this I would like to hear
>>>>> about it.
>>>>>
>>>>> In one case I had to put back a full desk top pc to keep from having
>>>>> to re set on a daily basis.
>>>>> Pcs dont seem to suffer from the motor boating issue.
>>>>>
>>>>> Jon VA3RQ
>>>>>
>>>>>
>>>>> On 2/3/2018 9:26 PM, JJC wrote:
>>>>>
>>>>>> Skyler,
>>>>>>
>>>>>> I’ll have to disagree with your statements completely.  I have not
>>>>>> only personally load-tested but I have and know of many high traffic
>>>>>> systems that are running with zero “sputter” or issue.l on a Pi.  Several
>>>>>> have been on the air and running for well over a year.
>>>>>>
>>>>>> I am also running one system in conjunction with DMRLink and
>>>>>> transcoding audio (read a much heavier demand on System resources) from
>>>>>> DMR<->  Analog with no “sputter”.  Granted the transcoding is offloaded to
>>>>>> a separate chip but nonetheless.  On all of these systems running on a Pi 2
>>>>>> or 3 the system load from asterisk, DMRLink etc all combined never exceeds
>>>>>> 15% and the audio is always clean ( not withstanding network craziness ).
>>>>>>
>>>>>> So having said all of this I would look elsewhere for what may be
>>>>>> causing your audio ailments.  I can’t really point you in a specific
>>>>>> direction other than to review overall system load and performance inline
>>>>>> with general system administration best practices.  And of course standard
>>>>>> troubleshooting methods of hardware swapping/testing and validation.
>>>>>>
>>>>>> JJC
>>>>>> N0PKT
>>>>>>
>>>>>> Sent from the iRoad, so please ignore any typos or awesome
>>>>>> autocorrects
>>>>>>
>>>>>> On Feb 3, 2018, at 18:19, Skyler F<electricity440 at gmail.com>  wrote:
>>>>>>>
>>>>>>> At this point, I don't think the raspberry pi audio is as good as it
>>>>>>> could be on the raspberry pi. Even with a pi 3 on the best settings in
>>>>>>> usbradio, it will sputter every once and a while I realize Doug has
>>>>>>> implemented a precision timer, however, his image is not open source, and I
>>>>>>> cannot modify, therefore not an option for me.
>>>>>>>
>>>>>>> What is the best mini computer hardware available for reasonable
>>>>>>> prices nowadays that I could use in place of the pi? The raspberry pi arm
>>>>>>> architecture just does not seem to cut the current versions of AllStar and
>>>>>>> DAHDI. I realize how picky I am being, but I am sort of going crazy by some
>>>>>>> raspberry pi nodes i've put together with crazy sputtering issues. And the
>>>>>>> telemetry sometimes sounds like it is played at 1/2 speed. U
>>>>>>>
>>>>>>> Usbradio and simpleusb have their different problems, but neither
>>>>>>> seem to work ok. I would actually argue usbradio works better on the pi
>>>>>>> because it does not have an unreliable duplex audio delay.
>>>>>>>
>>>>>>> Do ATOM processers work well? Best suggestions here for something
>>>>>>> lightweight and non power-hungry?
>>>>>>>
>>>>>>> Thank You!
>>>>>>> Skyler KDØWHB
>>>>>>>
>>>>>>>
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>>>
>>>
>>> --
>>> Tim WD6AWP
>>>
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