[mythtv-users] RingBuf(...): Waited 0.2 seconds for data to become available...

[Brian J. Murrell]

On 12-02-16 06:49 AM, Brian J. Murrell wrote:
> Running master (v0.25pre-4525-gdcfe7b0) I am seeing the following in
>  the BE log:
> 
> /mythtv/4112_20120216020000.mpg): Waited 0.2 seconds for data 
> 			to become available... 130964 < 131072
> 2012-02-16 02:11:11.071747 I [29229/20156] ProcessRequest ringbuffer.cpp:1093 (WaitForAvail) - RingBuf(/video/mythtv/4112_20120216020000.mpg): Waited 0.2 seconds for data 
> 			to become available... 121884 < 131072
> 2012-02-16 02:11:23.645359 I [29229/20156] ProcessRequest ringbuffer.cpp:1093 (WaitForAvail) - RingBuf(/video/mythtv/4112_20120216020000.mpg): Waited 0.2 seconds for data 
> 			to become available... 127488 < 131072
> 2012-02-16 02:11:28.380541 I [29229/20156] ProcessRequest ringbuffer.cpp:1093 (WaitForAvail) - RingBuf(/video/mythtv/4112_20120216020000.mpg): Waited 0.2 seconds for data 
> 			to become available... 128792 < 131072
> 2012-02-16 02:12:25.619496 I [29229/20156] ProcessRequest ringbuffer.cpp:1093 (WaitForAvail) - RingBuf(/video/mythtv/4112_20120216020000.mpg): Waited 0.2 seconds for data 
> 			to become available... 60412 < 98304
> 2012-02-16 02:12:37.692135 I [29229/20156] ProcessRequest ringbuffer.cpp:1093 (WaitForAvail) - RingBuf(/video/mythtv/4112_20120216020000.mpg): Waited 0.2 seconds for data 
> 			to become available... 89716 < 98304
> 
> And similar in the mythjobqueue log running on another machine (to do
> commflagging):
> 
> 2012-02-16 02:11:04.158075 I  RingBuf(myth://10.75.22.2:6543/4112_20120216020000.mpg): Waited 0.2 seconds for data 
> 			to become available... 0 < 32768
> 2012-02-16 02:11:16.868111 I  RingBuf(myth://10.75.22.2:6543/4112_20120216020000.mpg): Waited 0.2 seconds for data 
> 			to become available... 0 < 32768
> 2012-02-16 02:11:33.427089 I  RingBuf(myth://10.75.22.2:6543/4112_20120216020000.mpg): Waited 0.2 seconds for data 
> 			to become available... 0 < 32768
> 2012-02-16 02:11:35.918127 I  RingBuf(myth://10.75.22.2:6543/4112_20120216020000.mpg): Waited 0.2 seconds for data 
> 			to become available... 0 < 32768
> 2012-02-16 02:11:37.414111 I  RingBuf(myth://10.75.22.2:6543/4112_20120216020000.mpg): Waited 0.2 seconds for data 
> 			to become available... 0 < 32768
> 2012-02-16 02:12:28.619130 I  RingBuf(myth://10.75.22.2:6543/4112_20120216020000.mpg): Waited 0.2 seconds for data 
> 			to become available... 0 < 32768
> 2012-02-16 02:12:31.226079 I  RingBuf(myth://10.75.22.2:6543/4112_20120216020000.mpg): Waited 0.2 seconds for data 
> 			to become available... 0 < 32768
> 2012-02-16 02:12:43.227096 I  RingBuf(myth://10.75.22.2:6543/4112_20120216020000.mpg): Waited 0.2 seconds for data 

FWIW, this has gone away with the CPU-usage improvements in the quality
detection code that were recently landed.

My gut told me at the time that this was a software problem.  I'm
personally pleased that my instincts continue to serve me well.  :-)

Cheers,
b.

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