[mythtv-commits] Ticket #10862: ALSA buffer size (prealloc) increases by 190 each time a recording is watched in mythfrontend.

[MythTV]

#10862: ALSA buffer size (prealloc) increases by 190 each time a recording is
watched in mythfrontend.
-----------------------------------------------+---------------------------
     Reporter:  Michael Williams <mikeww2k@…>  |      Owner:  jyavenard
         Type:  Bug Report - General           |     Status:  new
     Priority:  minor                          |  Milestone:  unknown
    Component:  MythTV - Audio Output          |    Version:  0.25-fixes
     Severity:  medium                         |   Keywords:  ALSA,
Ticket locked:  0                              |  prealloc
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 The buffer (/proc/asound/card0/pcm0p/sub0/prealloc) is being increased by
 190 every time a recorded show is watched. This should only increase when
 it is needed.

 Output of "grep ALSA *" in /var/logs/mythtv/

 mythfrontend.20120625155836.20931.log:2012-06-25 16:08:34.665187 E
 [20931/20931] CoreContext audio/audiooutputalsa.cpp:195
 (SetPreallocBufferSize) - ALSA: Setting hardware audio buffer size to 320
 mythfrontend.20120625155836.20931.log:2012-06-25 16:10:03.684508 E
 [20931/20931] CoreContext audio/audiooutputalsa.cpp:195
 (SetPreallocBufferSize) - ALSA: Setting hardware audio buffer size to 512
 mythfrontend.20120625155836.20931.log:2012-06-25 16:11:15.328751 E
 [20931/20931] CoreContext audio/audiooutputalsa.cpp:195
 (SetPreallocBufferSize) - ALSA: Setting hardware audio buffer size to 768
 mythfrontend.20120625155836.20931.log:2012-06-25 16:11:35.897720 E
 [20931/20931] CoreContext audio/audiooutputalsa.cpp:195
 (SetPreallocBufferSize) - ALSA: Setting hardware audio buffer size to 1152
 mythfrontend.20120625155836.20931.log:2012-06-25 16:11:46.456781 E
 [20931/20931] CoreContext audio/audiooutputalsa.cpp:195
 (SetPreallocBufferSize) - ALSA: Setting hardware audio buffer size to 1728

 ------

 I change permissions of /proc/asound/card0/pcm0p/sub0/prealloc to 777 in
 /etc/rc.local to allow mythfrontend to adjust the buffer when it needs to.

 ------

 ./configure --enable-proc-opt --disable-libcec


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 mythfrontend version: fixes/0.25 [v0.25.1-43-g73bc45e]

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 mythfrontend log file is attached.

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Ticket URL: <http://code.mythtv.org/trac/ticket/10862>
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