[mythtv-users] random livetv stalls

[Mark Perkins]

> On 13 Feb 2014, at 7:45 pm, "Mike Thomas" <mt3 at pfw.demon.co.uk> wrote:
> 
> On Wed, 12 Feb 2014 12:48:57 -0800
> Mike Carron <jmcarron at starstream.net> wrote:
>> 
>>> On 2/10/2014 8:05 PM, Kevin Johnson wrote:
>>> Seems I have further improved the system by reducing the hd
>>> ringbuffer size on the backend down to the min of 4700.
>>> I had it set much higher at around 37000.  Cant remember why i had 
>>> altered it.
>>> I still get a pause at the top and bottom of the hour, but only
>>> about 1 second or less.
>> ***
>> I can't seem to find out what that hd ringbuffer is actually for or
>> what conditions would indicate changing its size. Can anyone offer
>> some advice?
> 
> Data is slapped into the ring buffer from the tuner cards. From there
> it is sent to disk, examined for timing information (which goes to the
> recordedseek table) and also transmitted to any clients who are
> watching really up-to-date TV. It serves to smooth out the jerkiness
> inherent in a non-real-time task.
> 
> My experiences are that 4700kB is too low and it can overflow at times
> of increased activity, thereby damaging the recorded data stream. If you
> are recording HD channels then it is probably way too low. Anything from
> 10MB upwards works nicely for me.
> 
> Yours
> 
> Mike
> _______________________________________________
Mike is it generally the case that more ringbuffer is better or does too large start causing further problems?