[mythtv-commits] Ticket #2603: Prebuffering pause while realtime commflagging

MythTV mythtv at cvs.mythtv.org
Mon Oct 23 06:00:47 UTC 2006

#2603: Prebuffering pause while realtime commflagging
 Reporter:  thomas at boerkel.de  |       Owner:  ijr    
     Type:  defect             |      Status:  new    
 Priority:  minor              |   Milestone:  unknown
Component:  mythtv             |     Version:  0.20   
 Severity:  medium             |  
 When I am watching a recording while it is being recorded and commflagged
 in realtime, I get a prebuffering pause every now and then. I don't have
 that problem, when I watch already finished recordings (even when
 commflagging of 2 other recordings is in progress).

 I did not have this problem with 0.19. It only appeared recently, either
 with 0.20 or some fix in 0.20 fixes. I am running atrpms 0.20-141, which
 should be 0.20 fixes r11499.

 I have a remote frontend, NFS parameters like suggested in the wiki. Tried
 8192 and 32768 block size for a test, but I was running 0.19 with 8192
 block size without problems.

 I can easily run 2 mythtranscode (MPEG2) jobs on the backend and watch
 without prebuf pause on the frontend. I also can easily fast forward with
 max. speed, when the backend is idle. So, I think this is not a CPU, IO or
 network problem of my backend.

 I am attaching log from mythfrontend, where it can be seen, that the
 prebuffering pause happens during commflag update. I guess, the thread
 that handles that update has a too high priority.

Ticket URL: <http://cvs.mythtv.org/trac/ticket/2603>
MythTV <http://www.mythtv.org/>

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