[vdr] ring buffer overflow under high cpu load

C.Y.M syphir at syphir.sytes.net
Wed Mar 22 19:50:01 CET 2006


Udo Richter wrote:
> C.Y.M wrote:
>> I am using vdr-1.3.44 with xine-0.7.8 and everything works fine under
>> normal
>> operations.  But, If I start using intensive CPU load applications,
>> such as
>> "VDRConvert" to create a dvd, vdr starts giving me ring buffer
>> overflow messages.
> 
> I had serious disk throughput issues that were IMHO caused by the file
> system driver (reiser) being too CPU-intensive. This also leads to
> buffer overruns, since the writer cant keep up with the incoming data.
> Things were better on kernel 2.4 and definitely improved on 2.6 after
> re-formatting the file system. (fragmentation)
> 
> In light cases, playback is jerky while cutting, in severe cases, even
> two parallel recordings caused an CPU overload of my C3-600.
> 

I wonder if running xine with some type of priority would help. Also, perhaps a
networked version of xine my solve this.  This is not a problem if I use my full
featured card as the primary DVB.

Best Regards,



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