[mythtv-users] .25 - "Maximum buffer size exceeded"

[Raymond Wagner]

On 3/29/2012 22:32, Phil Bridges wrote:
> 2012-03-29 21:12:30.800845 E [7151/23462] HDHRStreamHandler
> ThreadedFileWriter.cpp:216 (Write) -
> TFW(/mnt/recordings2/1461_20120329210000.mpg:99): Maximum buffer size
> exceeded.
>                          file will be truncated, no further writing will be done.
>                          This generally indicates your disk performance
>                          is insufficient to deal with the number of on-going
>                          recordings, or you have a disk failure.
>
> It also appeared that mythbackend restarted at the bottom of the hour
> - at least, there was a new logfile generated.
>
> I was only recording two shows at the time, and I have plenty of space
> on each of my recording mountpoints (this was recorded to a local
> drive).  Any tips at how to further troubleshoot the issue?

How old a version of 0.25 are you running?  There was an issue fixed in 
the recording quality monitor a couple weeks ago that caused excessive 
amounts of context switches in HDHR recordings.  Those could potentially 
cause problems such as filesystem stalls, and the inability to flush to 
disk in a timely manner, resulting in terminated recordings.