[mythtv-users] Remote Mythfrontend Problem

Mark Garland mythtvusers at markgarland.co.uk
Wed Jul 22 11:45:23 UTC 2009

Hi Steve,

Your logs show the same as the issue I'm having, except mine doesn't just
glitch, it completely locks.

RingBuf(/video/1001_20090717183822.mpg): Waited 1.0 seconds for data to
become available...

/video would suggest that the front end is accessing the file directly and
isn't streaming it from the backend.

I've selected the "Always stream from Backend" option in the hope that there
was contention between the frontend and backend trying to access the same
file, and that this would resolve it as only the backend would be trying to
get the file.  Too soon to say right now.

I'm new to myth, so happy to be corrected by more experienced members...


-----Original Message-----
From: mythtv-users-bounces at mythtv.org
[mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Steve Milner
Sent: 22 July 2009 09:23
To: mythtv-users at mythtv.org
Subject: Re: [mythtv-users] Remote Mythfrontend Problem

On 21/07/09 21:34, Gareth Glaccum wrote:
>> I am worried this is hardware ralated on the frontend machine in some
>> way, but I don't know where to start.
> From what you have described, I would be thinking that your buffer to
> disk
> is not good enough.
> i.e. you don't have enough bandwidth between your processors and disk,
> to be able to write a file, read and send it over the network in one go.
> Try to pause your liveTV for 10 seconds and see what it is like then.

I was experimenting with that last night and it seemed to make little 

If it is the problem you describe, wouldn't that problem effect the 
backend, since it is the backend that is writing the file to the disk?

I have comcentrated so far on the frontend to try and resolve the 
problem (mailny because the backend wasn't having problems)

How can I work out if that is the problem? Would 'top' on the backend 
show lots of IO Wait if that was the problem?


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