[mythtv-users] hdhomerun lost stream from mythtv

[Roger Heflin]

Brad DerManouelian wrote:
> Rick wrote:
>> Brad DerManouelian wrote:
>>
>>> How are you connecting your backend to the hdhomerun? It might be 
>>> beneficial to structure your network in such a way that there is little 
>>> between your HDHomeRun and your backend. For instance, I have those two 
>>> things on the same switch which then plugs into the main network switch. 
>>> I've also had it set up so the HDHomeRun plugs directly into a second 
>>> ethernet port on my backend to minimize network troubles between the two.
>>>
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>>>
>> Unfortunately, I can't make any network isolation changes at this point. 
>>    The HDHomerun is in the basement and the myth frontend/backend is 
>> next to the tv.  Also, there isn't room for additional cards in the 
>> backend.   I'll have to think about my options in that regard.
>>
>> Separate from any hardware changes, is there something I can tweak from 
>> myth or the linux kernel?  Are you saying that network issues *will* 
>> cause the problem I am seeing?
> 
> I'm saying I've never had that problem or heard of a problem where the 
> stream goes away so I'm guessing there is some network anomaly that is 
> causing it.
> 
> I have seen this behavior when my NFS mount decided to go away on me, so 
> it sounds reasonable that momentarily dropping network would cause your 
> symptoms as well.

If you use a high percentage of the servers ability, you likely will get network 
slowdowns that will cause issues with applications needing a consistent rate.

What kind of network does the server have, and what kind of network is it 
running into?  (100mbit, 1Gbit?).

Things that you could do:

Add a network card (as already mentioned)
Move to a Gbit network (if it is only 100Mbit).
Find what process is causing the issue, and slow it down.

I don't have a HDHomerun, but I have a mvpmc frontend box, and if I don't limit 
the speed of copies and rsyncs those copies and rsyncs cause stuttering on the 
mvpmc box, and I would expect the HDHomerun to not be very tolerant of that 
behavior.   And it only takes a single copy/rsync to cause a significant amount 
of stuttering.

                                Roger