[mythtv-users] Mythtv-frontend memory usage?

[James Abernathy]

On 12/5/18 5:27 AM, John wrote:
> On 05/12/2018 10:19, James Abernathy wrote:
>>
>>
>> On 12/5/18 5:09 AM, John wrote:
>>> On 04/12/2018 20:43, James Abernathy wrote:
>>>> I’m trying to build a Raspberry PI 3 B+ dedicated to 
>>>> Mythth-frontend.  I’m close to where I need to be, but years of 
>>>> working on selling CPUs into GFX and Video applications makes me 
>>>> hyper sensitive to minor video issues. I think it’s a curse in this 
>>>> case.
>>>>
>>>> Giving 256MB of RAM to the GPU limits you some.  Things I noticed 
>>>> that surprised me a little.
>>>>
>>>> 1. If I have Raspbian Lite, Xserver, XFCE, and  lightdm  with 
>>>> Mythtv-frontend, Mybuntu 28.21 theme and an HDTV recording playing 
>>>> I have 35 MB of memory free with no Swap used. Here I launched 
>>>> mythfrontend after setting performance mode on scaling governor.
>>>>
>>>> 2. If I only install  xserver, matchbox window manager, lightdm 
>>>> with the Mythtv stuff as #1 I also have 35 MB free
>>>>
>>>> 3. Using Openbox instead of Matchbox the same 35 MB free.
>>>>
>>>> Both 2 and 3 autolaunch and autologin per the Mythtv RPI wiki
>>>>
>>>> 4. If I change the theme to the Default Mythtv 1.4/7 one,  then I 
>>>> have 122 MB free.
>>>>
>>>> 5. FE locked up if I tried to run the Xmas theme.  I imagine it has 
>>>> the largest memory load.
>>>>
>>>> In either case the video performance is the same. Basically the 
>>>> video is great if the motion is not too fast.  quick panning is jumpy.
>>>>
>>>> I basically followed the tips from the Mythtv Raspberry pi wiki.
>>>>
>>>> Anything else I can try?
>>>>
>>>> My goal is to use the RP3B+ as my frontend without having to use 
>>>> Kodi 18. The video performance of Kodi 18 on RP3 is very good 
>>>> compared to Mythtv FE, but the Kodi interface is not to my liking.
>>>>
>>>> I have a NUC Core i3 running Xubuntu with Mythtv FE on it and it 
>>>> works perfectly, but I need the NUC else where.
>>>>
>>>> BTW, I tested the Kodi 18rc on the NUC and it’s video is not as 
>>>> good as 17.6 and when it was installed it messed up the Mythtv FE. 
>>>> I had to uninstall Kodi 18rc to get Mythtv FE back to normal. The 
>>>> only way I could see the video issue was to watch a news crawl 
>>>> across the bottom of the screen.
>>>>
>>>> Jim A
>>>>
>>>>
>>>>
>>>>
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>>>
>>> I find the panning judder on the pi with myth 29 unacceptable at 
>>> 1280i. Version 30 pre is an improvement with the new sync mechanism 
>>> and I find 720i acceptable on a 32ins TV. Kodi gives perfect 
>>> pictures at 1280 if you are ok with the interface. Using Rasbian out 
>>> of the box with 256m screen memory and Steppes theme not suffering 
>>> memory issues,
>>>
>>> The Firestick 4K is a game changer with picture quality as good as 
>>> Nvidia. It is not however currently reliable enough for production use,
>>>
>>> The Firestick 4K is much bett
>>>
>>>
>> Interesting feedback.  I have 3 questions:
>>
>> 1. Are we talking about this Firestick 4K? 
>> (https://www.amazon.com/Introducing-Fire-TV-Stick-4K-with-All-New-Alexa-Voice-Remote/dp/B079QHML21/ref=sr_1_3?ie=UTF8&qid=1544004803&sr=8-3&keywords=fire+stick+4k)
>>
>> 2. Will the ethernet adapter I use on my non-4k version of the Fire 
>> Stick work on the new 4K version?
>>
>> 3. Will Version 30 Pre Frontend on RP3 server video from my 29.1 backend?
>>
>> Jim A
>>
>>
> 1/ Are we talking about this Firestick 4K? yes
>
> 2. Will the ethernet adapter I use on my non-4k version of the Fire 
> Stick work on the new 4K version? I think so Amazon list. Yes 
> according to "Amazon Ethernet Adaptor for Fire TV and Fire TV Stick 
> with Alexa Voice Remote (2017 models), Fire TV Basic Edition and Fire 
> TV Stick 4K ?"
>
> 3/ Will Version 30 Pre Frontend on RP3 server video from my 29.1 
> backend? Yes amazingly so:-)
>
Great sounds like I have another item for my Christmas list. I'll start 
testing the RP3 on Mythtv 30 today.

Jim A

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